| Free On-line Dictionary of Computing | Acknowledgements | Missing definition |
| ! | !!!Batch | " |
| # | $ | $1 |
| $tonePits | % | & |
| $ | ' | 'Snooze |
| ( | (()) | () |
| (c) | (TM) | ) |
| * | *brainfuck | *LISP |
| *MOD | *w | + |
| ++ | , | - |
| -- | --C-=C-C-- | -oid |
| -ware | .) | .box |
| .com | .cshrc | .env |
| .Gertrude | .git/config | .login |
| .mailrc | .mOdMoDwOrM | .NET |
| .NET framework | .newsrc | .plan |
| .twmrc | .yacuabll | .⍸. |
| / | /actuator/health | /client/get_targets |
| /dev/null | 0 | 0/1 knapsack problem |
| 1 | 100BaseFX | 100BaseT |
| 100BaseTX | 100BaseVG | 100VG-AnyLAN |
| 10base2 | 10base5 | 10baseT |
| 120 reset | 1-2-3 | 1394 |
| 1541 | 1581 | 16000 |
| 16450 | 16550 | 16550A |
| 16650 | 16750C | 16 bit |
| 16-bit application | 16C550 | 16C750 |
| 16C850 | 1802 | 192.168.1.1 |
| 1NF | 1TBS | 1.TR.6 |
| 2 | 20-GATE | 2780 |
| 2B1D | 2B1Q | 2B+D |
| 2NF | 2.PAK | 32000 |
| 3270 | 32-bit application | 3780 |
| 386 | 386BSD | 386SPART.PAR |
| 386SX | 3Com Corporation | 3DNow! |
| 3DNow! Professional | 3DO | 3GL |
| 3NF | 3Station | 3-tier |
| 404 | 4.2BSD | 431A |
| 4.3BSD | 4510 | 473L Query |
| 486 | 486DX | 486SX |
| 4GL | 4NF | 4xx |
| 51forth | 56 kbps | 56k line |
| 586 | 5ESS | 5NF |
| 5th Glove | 6.001 | 610 |
| 6309 | 64-bit | 6501 |
| 6502 | 650x | 6510 |
| 6526 | 65816 | 6800 |
| 68000 | 68020 | 68030 |
| 68040 | 68050 | 68060 |
| 6809 | 680x0 | 686 |
| 68HC11 | 68LC040 | 6to4 |
| 6x86 | 754 | 80186 |
| 80188 | 80/20 rule | 802.1 |
| 802.11a | 802.11b | 802.11g |
| 802.2 | 802.3 | 80286 |
| 8031 | 80386 | 8048 |
| 80486 | 8051 | 8052 |
| 8080 | 8086 | 8088 |
| 80x86 | 822 | 82430FX |
| 82430HX | 82430MX | 82430VX |
| 8250 | 8.3 | 8450 |
| 8514 | 8514-A | 88000 |
| 88open | 8-bit clean | 8N1 |
| 8 queens problem | 8 queens puzzle | 8x86 |
| 90-90 Rule | 9PAC | :-) |
| ; | < | <g> |
| <gr&d> | <label> | = |
| > | ? | ?? |
| @ | @-party | @Begin |
| @stake | @XX | [incr Tcl] |
| \ | \begin | \big |
| \BV | \perp | \sqcap |
| \sqcup | \sqsubseteq | \subseteq |
| \t | \uparrow | \{@} |
| ^ | A# | A-0 |
| a1 | A1 security | A20 handler |
| A-3 | A3D | A4C |
| a56 | AAB8 | AAC |
| AADL | AAL | AAP |
| AAP DTD | aard | AARP |
| AARP probe packets | AAUI | A&B |
| abbrev | Abbreviated Test Language for Avionics Systems | ABC |
| ABC ALGOL | ABCL/1 | ABCL/c+ |
| ABCL/R | ABCL/R2 | abduction |
| ABEND | AberMUD | ABI |
| ABLE | ABM | ABNF |
| abort | ABP | ABR |
| abscissa | ABSET | absolute path |
| absolute pathname | abstract | abstract class |
| abstract data type | abstract interpretation | abstraction |
| abstract machine | Abstract Machine Notation | abstract syntax |
| Abstract Syntax Notation 1 | abstract syntax tree | Abstract-Type and Scheme-Definition Language |
| Abstract Windowing Toolkit | Abstract Window Toolkit | ABSYS |
| AC2 | AC3 | ACA |
| ACAP | Accelerated Graphics Port | accelerator |
| Accent | accept | Acceptable Use Policy |
| acceptance testing | Acceptance, Test Or Launch Language | acceptor |
| Access | Access Control List | access method |
| access permission | access point | access time |
| ACCLAIM | Accounting File | accounting management |
| Account Representative | ACCU | accumulator |
| accuracy | ACE | ACF |
| ACF/NCP | ACIA | ACID |
| ACIS | ACK | ACL |
| ACM | ACME | ACOM |
| acorn | Acorn Archimedes | Acorn Computer Group |
| Acorn Computers Ltd. | Acorn Online Media | Acorn RISC Machine |
| A Coroutine Language | ACOS | acoustic coupler |
| ACP | ACPI | Acrobat |
| acronym | ACSE | ACT |
| ACT++ | Act1 | ACT 1 |
| Act2 | Act3 | Actalk |
| Actis | activation record | active DBMS |
| Active Directory | Active Language I | active matrix display |
| Active Measurement Project | Active Monitor | active object |
| Active Reconfiguring Message | active record pattern | Active Server Pages |
| ActiveX | ActiveX Data Objects | ACT ONE |
| Actor | actor | Actors |
| actor/singer/waiter/webmaster | Actra | actual argument |
| actuator/health | Actus | AD |
| ad | Ada | Ada++ |
| Ada 83 | Ada 95 | Ada 9X |
| ADABAS | Ada Core Technologies | Ada/Ed |
| Adaline | Ada Lovelace | ADAM |
| Adam7 | Adamakegen | ADAMO |
| Adam Osborne | Ada-O | Adaplan |
| Adaplex | Ada Programming Support Environment | ADAPT |
| Adaptable User Interface | Adaptec | adaptive answering |
| Adaptive Communication Environment | Adaptive Digital Pulse Code Modulation | adaptive learning |
| adaptive routing | Adaptive Server Enterprise | Adaptive Simulated Annealing |
| Adaptive TRansform Acoustic Coding | Adaptor | Ada Semantic Interface Specification |
| Ada Software Repository | A Data Management System | ADC |
| ADCCP | A/D converter | ADCU |
| AD/Cycle | ADD 1 TO COBOL GIVING COBOL | ADDD |
| additive | address | address book |
| address bus | addressed call mode | addressee |
| addressing mode | address mask | address resolution |
| Address Resolution Protocol | address space | Address Strobe |
| ADELE | ADES | ad-hockery |
| ad-hoc polymorphism | Aditi | adjacency |
| adjacent | ADL | AdLog |
| ADM | ADMD | admin |
| Administration Management Domain | administrative distance | Administrative Domain |
| admissible | ADO | Adobe Systems, Inc. |
| Adobe Type Manager | ADPCM | ADR |
| ADS | ADSL | ADSP |
| ADSU | ADT | Advanced Audio Coding |
| Advanced Communication Function/Network Control Program | Advanced Communications Function | Advanced Computing Environment |
| Advanced Configuration and Power Interface | Advanced Data Communications Control Protocol | Advanced Encryption Standard |
| Advanced Function Presentation | Advanced Function Printing | Advanced Intelligent Tape |
| Advanced Interactive eXecutive | Advanced Micro Devices, Inc. | Advanced Network Systems Architecture |
| Advanced Peer-to-Peer Networking | Advanced Power Management | Advanced Programmable Interrupt Controller |
| Advanced Program-to-Program Communications | Advanced Research Projects Agency | Advanced Research Projects Agency Network |
| Advanced Revelation | Advanced RISC Computing Specification | Advanced RISC Machine |
| Advanced RISC Machines Ltd. | Advanced SCSI Peripheral Interface | Advanced Software Environment |
| Advanced STatistical Analysis Program | Advanced Technology Attachment | Advanced Technology Attachment Interface with Extensions |
| Advanced Video Coding | Advanced WavEffect | Advantage Gen |
| ADVENT | Adventure Definition Language | ADVSYS |
| adware | AE | ae |
| AED | AEGIS | Aegis |
| Aeolus | AEP | aeroplane rule |
| AES | AESOP | af |
| AFAC | AFAIK | affine transformation |
| affordance | AFIPS | AFJ |
| AFK | aflex | AFNOR |
| AFP | AFS | AFUU |
| ag | agent | aggregate type |
| aggregation | aggregator | AGL |
| AGM Theory for Belief Revision | Agner Krarup Erlang | AGORA |
| AGP | AGP graphics | A Hardware Programming Language |
| AHDL | AHPL | AI |
| ai | AIA | AI-complete |
| AID | AIDA | AIDS |
| AIDX | AIFF | AI International |
| Aiken code | AI koan | AIMACO |
| Aimnet | Aion Development System | AIR |
| AIr MAterial COmmand compiler | airplane rule | AIT |
| AIX | Ajax | AKC |
| AKCL | A. K. Erlang | AKL |
| AL | al | Aladdin Enterprises |
| Aladdin Systems, Inc. | ALADIN | ALAM |
| Alan F. Shugart | A-language | A Language Encouraging Program Hierarchy |
| A Language for Attributed Definitions | A Language with an Extensible Compiler | Alan Kay |
| Alan M. Turing | Alan Shugart | Alan Turing |
| ALARP | A-law | ALC |
| Alcool-90 | ALCOR | Aldat |
| ALDES | ALDiSP | ALEC |
| ALEF | ALEPH | Aleph |
| aleph 0 | alert | Alex |
| Alexis | ALF | Alfl |
| algebra | ALGEBRAIC | algebraic |
| Algebraic Compiler and Translator | algebraic data type | Algebraic Interpretive Dialogue |
| Algebraic Logic Functional language | Algebraic Manipulation Package | Algebraic Specification Language |
| algebraic structure | Algebra of Communicating Processes | ALGOL |
| ALGOL 58 | ALGOL 60 | ALGOL 60 Modified |
| ALGOL 60 Revised | ALGOL 68 | ALGOL 68C |
| ALGOL 68-R | ALGOL 68 Revised | ALGOL 68RS |
| ALGOL 68S | ALGOL C | ALGOL D |
| ALGOL N | ALGOL W | ALGOL X |
| ALGOL Y | algorithim | algorithm |
| ALgorithm DEScription | algorithmic art | ALgorIthmic ASsembly language |
| Algorithmic Language | Algorithmic Model | Algorithmic Processor Description Language |
| Algorithmic Test Case Generation | ALGY | ALIAS |
| alias | aliasing | aliasing bug |
| Alice | alife | A-Life |
| ALJABR | al-Khwarizmi | Allegro |
| all-elbows | ALLIANCE | Allman style |
| allow-none | ALLOY | ALM |
| Aloha | Aloha Net | Alonzo Church |
| ALP | ALPAK | ALPHA |
| Alpha | Alpha AXP 21164 | alpha/beta pruning |
| alphabetic language | alpha conversion | Alpha EV6 |
| Alpha Geek | alphanumeric | alpha particle |
| Alphard | alpha testing | ALPS |
| alt | ALTAC | Altair 8800 |
| Alta Vista | alt bit | ALTER |
| Alternating bit protocol | alternative text | altmode |
| ALTRAN | alt.sources | alt text |
| ALU | Aluminum Book | Alvey |
| AM | am | Amanda |
| A Manufacturing Language | amateur packet radio | Amber |
| AMBIT | AMBIT/G | AMBIT/L |
| AMBIT/S | AMBUSH | AMD |
| AMD 29000 | AMD 29027 | Amdahl |
| Amdahl Corporation | Amdahl's Law | AMD Am2901 |
| AMD Am2903 | AMD Am2910 | AMD K7 |
| American National Standard | American National Standards Institute | American Society of Mechanical Engineers |
| American Standard Code for Information Interchange | American Telephone and Telegraph, Inc. | American Wire Gauge |
| America On-Line, Inc. | America's Multimedia Online | AMI |
| Amiga | Amiga E | Aminet |
| AML | AML/E | AMO |
| Amoeba | AMP | amper |
| Ampere | ampersand | AMPL |
| AMPLE | Amplitude Modulation | amp off |
| AMPPL-II | AMPS | AMS |
| AMTRAN | Amulet | an |
| analog | analog computer | Analog Hardware Design Language |
| analogue | analogue computer | Analogy Model |
| analytical CRM | Analytical Engine | Analytical Machine |
| Analytical Solutions Forum | anchor | ANCP |
| AND | ANDF | Andorra-I |
| Andorra Kernel Language | Andorra-Prolog | Andrei Markov |
| Andrew File System | Andrew Fluegelman | Andrew Message System |
| Andrew Project | Andrew S. Tanenbaum | Andrew Tanenbaum |
| Andrew Toolkit | Andy Tanenbaum | An Evolutionary System for On-line Programming |
| Angel | angle bracket | Anglo-Saxon point |
| angry fruit salad | ANI | Animated GIF |
| animation | Animus | ANL |
| Anna | annealing | annotate |
| ANNotated Ada | annotation | annoybot |
| annoyware | Annual Change Traffic | annulled branch |
| anonymous FTP | ANother Tool for Language Recognition | ANR |
| ANS | ANSA | ANSI |
| ANSI C | ANSI Minimal BASIC | ANSI/SPARC |
| ANSI/SPARC Architecture | ANSI/SPARC model | ANSI X12 |
| ANSI Z39.50 | antenna gain | Anthony Hoare |
| anti-aliasing | antichain | antisymmetric |
| antivirus | antivirus program | antivirus software |
| ANTLR | ANU | ANU ML |
| any key | anytime algorithm | ao |
| AOCE | AOL | AOP |
| AOS | APA | Apache |
| Apache Software Foundation | APAL | APAREL |
| A PArse REquest Language | APC | APDL |
| APE | apE | API |
| APIC | APL | APL2 |
| APLGOL | APLWEB | APM |
| Apollo Computer | apostrophe | app |
| APPC | AppKit | APPLE |
| Apple | Apple Address Resolution Protocol | Apple Attachment Unit Interface |
| Apple Computer, Inc. | Apple II | Apple Macintosh |
| Apple Newton | Apple Open Collaboration Environment | AppleScript |
| Applesoft BASIC | applet | Appletalk |
| AppleTalk Data Stream Protocol | AppleTalk Filing Protocol | apple-touch-icon |
| apple-touch-icon-152x152.png | apple-touch-icon-152x152-precomposed.png | apple-touch-icon-precomposed |
| appletviewer | application | Application Binary Interface |
| Application Configuration Access Protocol | Application Control Architecture | Application Developer |
| application development | application enablement services | Application environment specification |
| Application Executive | Application Integration Architecture | application layer |
| application lifecycle management | Application Portability Architecture | application program |
| Application Program Interface | Application Programming Interface | Application Protocol Data Unit |
| Applications Development Manager | application server | Application Service Element |
| application service provider | applications language | application software |
| Application Software Installation Server | Application-Specific Integrated Circuit | Applications Programming Interface |
| applications software | application testing | Application Visualisation System |
| applicative language | Applicative Language for Digital Signal Processing | applicative order reduction |
| APPLOG | APPN | approximation algorithm |
| April Fool's Joke | A Programming Language | APSE |
| APT | APX III | aq |
| AQL | ar | arbitrary precision calculator |
| ARC | arc | Arcade |
| ArchBSD | archie | Archimedes |
| architecture | Architecture Neutral Distribution Format | archive |
| archive site | ARCnet | ARCS |
| Arctic | arena | ARES |
| AREV | AREXX | arg |
| argument | Argus | Ariel |
| ARI Service | ARITH-MATIC | Arithmetic and Logic Unit |
| arithmetic mean | arity | arj |
| Arjuna | ARL | ARM |
| ARM610 | ARM7 | ARM710 |
| ARM7500 | ARM8 | ARM800 |
| ARM Ltd | ARMM | armour-plated |
| ARP | ARPA | ARPANET |
| ARQ | array | array processor |
| Array Processor Assembly Language | Array Theory | arrow key |
| ART | art | Artemis microkernel |
| Artifex | artificial intelligence | Artificial Intelligence Lab |
| Artificial Life | artificial neural network | Artisoft, Inc. |
| Artistic license | ARTSPEAK | AS |
| as | as31 | AS/400 |
| ASA | asap | asbestos |
| asbestos cork award | asbestos longjohns | ascender |
| ASCI | ASCII | ASCII art |
| ASCIIbetical order | ASCIIbonics | ASCII character table |
| ASCII graphics | ASDIMPL | ASDL |
| ASDO IMPlementation Language | ASE | A* search |
| ASF | ash | Ashmedai |
| Ashton-Tate Corporation | ASIC | Asiliant Technologies |
| A Simulation Process-Oriented Language | ASIS | ASK |
| ASL | ASL+ | As Low As Reasonably Practicable |
| ASM | ASME | ASN |
| ASN.1 | ASP | ASPECT |
| ASpecT | aspect | aspect-oriented programming |
| aspect ratio | ASPEN | ASPI |
| ASPIK | Aspirin | ASPLE |
| ASPOL | ASQC | ASR |
| assembler | ASSEMBLY | assembly code |
| Assembly Language | assembly language | Assembly Language Compiler |
| Assembly Language for Multics | as sensible as a dictionary | assertion |
| ASSET | asset management | Asset Source for Software Engineering Technology |
| assigned numbers | assignment | assignment problem |
| Association Control Service Element | Association for Computational Linguistics | Association for Computing |
| Association for Computing Machinery | Association for Progressive Communications | Association for SIMULA Users |
| Association Française des Utilisateurs d'Unix | Association of American Publishers | Association of C and C++ Users |
| Association of Lisp Users | associative array | associative memory |
| Associative Memory Parallel Processing Language | associativity | AST |
| ASTAP | AST Computers, LLC | asterisk |
| asterix | Astra Digital Radio | Astral |
| AST Research, Inc. | asymmetrical modulation | Asymmetric Digital Subscriber Line |
| Asymmetric Digital Subscriber Loop | asynchronous | Asynchronous Balanced Mode |
| Asynchronous Communications Interface Adapter | asynchronous logic | Asynchronous Transfer Mode |
| asyncronous | AT | at |
| AT-3 | ATA | ATA-2 |
| ATA-4 | Atanasoff-Berry Computer | Atanasoff, John Vincent |
| ATAPI | ATA point | Atari |
| Atari ST | AT Attachment | AT Attachment Packet Interface |
| AT bus architecture | AtFS | Athena |
| Atherton Technology | Athlon | ATIS |
| ATK | ATLAS | Atlas Autocode |
| ATM | ATM Forum | ATMP |
| atob | ATOLL | atomic |
| A Tools Integration Standard | ATRAC | ATS |
| at sign | AT&T | Attachment Unit Interface |
| attacks as a service | AT&T Bell Labs | attenuation |
| atto- | attoparsec | attribute |
| Attributed File System | Attribute Translation System | ATX |
| au | aubergine | audio |
| audiographics | audiographic teleconferencing | Audio IFF |
| AudioOne | Audio Processing Technology | Audio Video Interleave |
| Augmented Backus-Naur Form | AUI | A'UM |
| AUP | Aurora | Austin Kyoto Common Lisp |
| authentication | authoring | autobaud |
| autobogotiphobia | AutoCAD | Autocode |
| AUTOCODER | autoconf | autoconfiscate |
| Autodesk, Inc. | AUTOEXEC.BAT | AUTOGRAF |
| AUTOGRP | Auto Idle | Autolisp |
| autoloader | automagically | automata |
| automata theory | Automated Engineering Design | AUTOmated GRouPing system |
| Automated Retroactive Minimal Moderation | automated testing | AUTOMATH |
| Automatically Programmed Tools | automatic baud rate detection | automatic hyphenation |
| Automatic Mathematical TRANslation | Automatic Network Routing | Automatic Number Identification |
| Automatic Repeat Request | Automatic Send Receive | Automatic Sequence Controlled Calculator |
| automation | Automatische Rechenplanfertigung | automaton |
| Automatrix, Inc. | Autonomous System | Autonomous System Number |
| Autopass | autopilot code | autoprojector |
| AUTO-PROMPT | Autostat | autostereogram |
| A/UX | auxiliary storage | av |
| availability | Avalon/C++ | Avalon/Common LISP |
| avatar | AVC | average seek time |
| AverStar | AVI | Avon |
| AVS | aw | AWE |
| AWG | awk | AWT |
| aXe | AXIOM | axiom |
| AXIOM* | Axiomatic Architecture Description Language | axiomatic semantics |
| axiomatic set theory | Axiom of Choice | Axiom of Comprehension |
| axiom schema | AXLE | ayacc |
| AYT | az | AZERTY |
| B | b | B-0 |
| B1FF | B1 security | B2B |
| B2 security | B3 security | b4 |
| ba | Baan | Babbage |
| Babbage, Charles | babbling error | BABEL |
| BABT | Baby AT | BABYLON |
| BACAIC | Bachman Diagram | Bachman Information Systems |
| backbone | backbone cabal | backbone network |
| backbone site | back door | back-end |
| Back End Generator | Back End Generator Language | background |
| backing store | back link | backoff |
| BackOffice | backplane | backport |
| back-propagation | back quote | backronym |
| backside cache | backslash | backspace |
| backtick | backtracking | backup |
| Backup Domain Controller | backup pumpkin | backup rotation |
| backup software | Backus-Naur Form | Backus Normal Form |
| backward analysis | backward chaining | backward combatability |
| backward compatibility | backward compatible | backwards compatibility |
| backwards compatible | BAD | Bad command or file name |
| Bad Thing | bag on the side | baklava code |
| BAL | balanced computing | balanced tree |
| BALGOL | BALITAC | BALM |
| balun | Banach algebra | Banach inverse mapping theorem |
| Banach space | Banach-Tarski paradox | banana label |
| banana phenomenon | banana problem | bandwidth |
| bang | bang on | bang path |
| banner | Banyan | BAP |
| BAPI | bar | Barbara Liskov |
| bar code | bare metal | barfmail |
| barnacle code | Baroque | baroque |
| barrel shifter | barycentric | base |
| base 64 | baseband | base class |
| baseline | base memory | basename |
| Base Technology | bash | BASIC |
| Basic Assembly Language | BASIC AUTOCODER | Basic COBOL |
| Basic Encoding Rules | Basic Fortran | Basic Input/Output System |
| Basic JOVIAL | Basic Language for Implementation of System Software | Basic Multilingual Plane |
| Basic Object Adapter | Basic Object System | Basic Operating System |
| Basic Programming Support | Basic Rate Interface | Basic Service Set |
| BASIC V | Bastard Operator From Hell | bastion host |
| batch | batch file | batch processing |
| bathtub curve | baud | baud barf |
| Baudot | Baudotbetical order | Baudot code |
| baud rate | bawk | bay |
| baz | bb | BBC |
| BBC Micro | BBC Microcomputer | BBC Networking Club |
| BBL | BBN Butterfly | BBN Technologies |
| bboard | BBS | bc |
| BCBF | BCC | BCD |
| BCL | BC NELIAC | BCNU |
| BCPL | BCS | bd |
| BDC | BDL | BDPA |
| be | BEA | beamer |
| beam search | bean | beanie key |
| bearer channel | bear paw | Beats the shit outa me |
| Bebo | BeBOP | BeBox |
| BEDO | Bedrock | beep |
| beeper | BEG | BEGL |
| beige toaster | Be Inc | BEL |
| belief revision | BELL | Bell |
| bell | Bell 103 | Bell Communications Research, Inc |
| Bellcore | bell curve | Bell Laboratories |
| Bell Labs | bells and whistles | bells, whistles, and gongs |
| benchmark | Bend Over, Here It Comes Again | Benoit B. Mandelbrot |
| Benoit Mandelbrot | Bentley Systems, Inc. | BeOS |
| BER | Berard Object and Class Specifier | Berkeley |
| Berkeley 4.2 | Berkeley EDIF200 | Berkeley FP |
| Berkeley Internet Name Domain | Berkeley Logo | Berkeley Network |
| Berkeley Quality Software | Berkeley Software Design, Inc | Berkeley Software Distribution |
| Berkeley Softworks | Berkeley Unix | Berkeley Yacc |
| berklix | Berners-Lee, Tim | Bernoulli Box |
| Bernoulli principle | Bernstein condition | BERR |
| Bertrand | Bertrand Meyer | Bertrand Russell |
| Berzerkeley | Berzerkley | bespoke |
| best effort | best first search | best fit |
| BETA | beta | beta abstraction |
| beta conversion | Betamaxed | beta reduction |
| beta test | beta testing | beta version |
| Bezier | Bezier curve | Bezier surface |
| bf | BFI | bg |
| BGA | bgh | BGP |
| bh | BHC Code | bi |
| bib | bible | BIBOP |
| BibTeX | BiCapitalisation | BiCMOS |
| bidirectional printing | Bidouilleurs Sans Argent | bi-endian |
| BIFF | biff | Big bag of pages |
| big blue | big-endian | Big Gray Wall |
| big iron | BIG-LAN | Bigloo |
| bignum | bigot | Big Red Switch |
| Big Room | big win | bijection |
| Bill Gates | Bill Joy | binaries |
| binary | binary coded decimal | Binary Compatibility Standard |
| binary counter | binary data | binary exponential backoff |
| binary file | binary large object | binary package |
| binary prefix | binary relation | binary search |
| Binary Synchronous Transmission | binary tree | BIND |
| bindery | binding handle | binding-time analysis |
| BinHex | Binhex 4.0 | BinProlog |
| bioinformatics | BioMeDical Package | biometric device |
| biometrics | BIOR | BIOS |
| BIP | bipartite graph | BIPM |
| bipolar | bipolar transistor | BIPS |
| Bird-Meertens Formalism | Birds Of a Feather | BISDN |
| Bison | Bison++ | BIST |
| bisync | bit | bit bang |
| bit bashing | bitblt | bit bucket |
| bit decay | bit diddling | bite |
| Bit Error Rate | bit field | bitmap |
| bitmap display | bitmap font | bitmapped display |
| bit mask | BITNET | bitonal image |
| bit-paired keyboard | bit pattern | bit plane |
| bit rate | bit-robbing | bit rot |
| bit slice | bits per inch | bits per pixel |
| bits per second | bit string | bit stuffing |
| BitTorrent | bit twiddling | bitty box |
| bitwise | bitwise complement | bixie |
| biz-core stability | bj | Bjarne Stroustrup |
| BJC4000 | black art | black box |
| black-box testing | Black Data Processing Associates | black hat |
| black hole | BlackIce | black magic |
| blargh | blast | blat |
| BLAZE | BLAZE 2 | bleam |
| bleeper | bletcherous | Bletchley Park |
| Blind Carbon Copy | B-LINE | blinkenlights |
| BLISS | BLISS-10 | BLISS-11 |
| BLISS-16C | BLISS-32 | BLISS-36 |
| blit | blitter | blivet |
| bloat | bloatware | BLOB |
| block | Block And List Manipulation | Block Diagram Compiler |
| blocked records | Block Redundancy Check | Block Started by Symbol |
| block-structured | block transfer computations | blog |
| blog-driven development | Bloggs Family, the | Bloombug |
| Blosim | blow an EPROM | blow away |
| blowing your buffer | blow out | blow past |
| blow up | BLOX | BLT |
| Blue | Blue Book | Blue Box |
| blue box | blue dot syndrome | Blue Glue |
| Blue Screen of Death | Blue Screen of Life | Blue Sky Software |
| Bluetooth | blue wire | blurgle |
| bm | BMAN | BMASF |
| BMDP | B-Method | BMF |
| BMP | bmp | BMWF |
| bn | BNC | BNF |
| BNR Pascal | BNR Prolog | bo |
| BOA | boa | board |
| boat anchor | Bob | Bobo the Webmonkey |
| BOCS | Boehm B. | BOEING |
| Boeing Airplane Company Algebraic Interpreter Coding | BOFH | bogometer |
| BogoMips | bogon | bogon filter |
| bogon flux | bogosity | bogo-sort |
| bogotify | bogue out | BOHICA |
| Bohr bug | boink | BOLERO |
| Bolt, Beranek and Newman, Inc. | bomb | bon |
| bondage-and-discipline language | bonk/oif | Booch method |
| book | bookmark | Bookreader |
| book titles | Bookviewer | bool |
| Boolean | Boolean algebra | Boolean logic |
| Boolean search | Boole, George | Booster |
| boot | boot block | boot disk |
| booting | BOOTP | bootstrap |
| bootstrap loader | boot virus | Border Gateway Protocol |
| borf | Borland International, Inc. | Borland Software Corporation |
| BOS | Bose-Chaudhuri-Hocquenghem Code | BOSS |
| bot | botmaster | botnet |
| botnet herder | bottom | BottomFeeder |
| bottom feeder | bottom-unique | bottom-up implementation |
| bottom-up model | bottom-up testing | botwar |
| bounce | bounce message | boundary scan |
| boundary value | boundary value analysis | bounded |
| boundedly complete | bound variable | Bourne Again SHell |
| bournebasic | Bourne shell | boustrophedonic |
| box | boxed comments | boxen |
| Boxer | boxology | Boycott Apple |
| bozotic | BPEL | BPI |
| bpmake | bpp | BPR |
| BPS | bps | BQS |
| br | brace | bracket |
| bracket abstraction | braille | braille display |
| Braille embosser | Braille printer | Brain Aid Prolog |
| brain-damaged | brain-dead | brain dump |
| brain fart | Brainfuck | braino |
| branch | Branch and Hang | branch coverage testing |
| branch delay slot | Branch on Chip Box Full | branch prediction |
| Branch Target Buffer | branch to Fishkill | Brazil |
| BRB | breadcrumbs | breadth-first search |
| break | break-even point | breakpoint |
| break statement | breath-of-life packet | breedle |
| BRH | BRI | Brian Reid |
| BRIDGE | bridge | Bridgetalk |
| briefcase | brightness | Brilliant |
| bring X to its knees | British Broadcasting Corporation | British Library Method |
| British Standards Institute | British Telecom | British Telecom Research Laboratories |
| brittle | broadband | broadcast |
| broadcast quality video | broadcast storm | Broadway |
| brochureware | broken | broken arrow |
| Broken As Designed | broker | broket |
| brontobyte | Brooks's Law | brouter |
| Brouwer Fixed-Point Theorem | Brown and Sharpe Wire Gauge | brown paper bag bug |
| browser | browserconfig.xml | BRS |
| BRUIN | brute force | brute force and ignorance |
| brute force attack | BS | bs |
| BS2000 | BSA | BSD |
| BSD386 | BSDI | BSD/OS |
| BSD Unix | BSI | BSL |
| BSOD | BSOL | BSOM |
| BSP method | BSRAM | BSS |
| BSS segment | BST | bt |
| BTB | btoa | B-Toolkit |
| BTOS | B-tree | BTRIEVE |
| BTRIEVE Technologies, Inc. | BTRL | BTS |
| BTW | BUAF | BUAG |
| bubble memory | bubble sort | bucky bits |
| buffer | buffered write-through | buffer overflow |
| buffer overrun | bug | bug-compatible |
| bug fix | bug fix release | Bugfoot |
| bug-for-bug compatible | buglix | bugs |
| BUGSYS | bug tracking system | Bugzilla |
| build | built-in | Built-in Self Test |
| Bull | bulletin board | bulletin board system |
| bullet-proof | bullet-proof hosting | Bull Information Systems |
| bum | bump | bundle.js |
| burble | Bureau International des Poids et Mesures | Burge's Language |
| buried treasure | burn-in | burn-in period |
| Burroughs Corporation | Burst EDO | Burst Extended Data Out DRAM |
| burst page | Burst Static Random Access Memory | bus |
| bus error | Bush, Vannevar | Business Analyst |
| Business Application Programming Interface | Business Process Re-engineering | Business Software Alliance |
| Business Systems Analyst | business to business | bus master |
| bus mastering | bus network | bus topology |
| Busy Beaver | busy-loop | busy-wait |
| Butterfly Common LISP | Butterfly Scheme | button |
| buzz | bv | bw |
| bwBASIC | BWQ | by |
| byacc | by hand | Byte |
| byte | byte-code | byte-code compiler |
| byte-code interpreter | byte compiler | bytesexual |
| Byzantine | bz | bzzzt, wrong |
| C | C# | C* |
| C++ | C+- | C+@ |
| C-10 | C1 security | c2man |
| C2 security | c386 | C5 |
| C64 | c68 | CA |
| ca | cable modem | cache |
| cache block | cache coherency | cache conflict |
| cache consistency | cache hit | cache line |
| cache memory | cache miss | Cache On A STick |
| caching | CACI | CACM |
| CAD | CAD/CAM | CADD |
| Cadence Design Systems | CADET | CADRE |
| CAE | CAF | CAFE |
| CAGE | CAI | Cairo |
| CAIS | CAIS-A | CAiSE |
| CAJOLE | CAL | Calc |
| calculator | Calculus of Communicating Systems | Calendar API |
| Calendar Application Programming Interface | Caliban | Calico |
| California State University San Marcos | callback | call-by-name |
| call-by-need | call-by-reference | call-by-value |
| call-by-value-result | call/cc | Call Data Record |
| callee | Caller ID | calling convention |
| Call-Level Interface | Call Unix | Callware |
| call-with-current-continuation | CALS | Caltech Intermediate Form |
| CAM | CAM-6 | CAMAL |
| Cambridge Lisp | CamelCase | Camelot Library |
| camera ready | CAMIL | CAML |
| Caml Light | CAM-PC | Campus Wide Information System |
| CAN | Canada | Cancel |
| Cancelbunny | Cancelm00se | Cancelmoose |
| Cancelpoodle | candidate key | Candle |
| candygrammar | canonical | Canonical Encoding Rules |
| canonical name | canonicity | C (ANSI) |
| can't happen | Cantor | CAP |
| Capabilities Maturity Model | capability | Capability Maturity Model |
| capacitor | capacity | CAPI |
| Cap'n Crunch | Captain Abstraction | Captain Crunch |
| CAPTCHA | car | card |
| Cardbox for Windows | Cardbus | card creep |
| cardinality | cardinal number | CARDS |
| card walloper | Career Limiting Move | caret |
| careware | cargo cult programming | Caribou CodeWorks |
| Carl Friedrich Gauss | Carnegie Mellon University | carpal tunnel syndrome |
| carriage return | Carrierless Amplitude/Phase Modulation | carrier pigeon |
| carrier scanner | carrier signal | Cartesian coordinates |
| Cartesian product | CAS | CAS 8051 Assembler |
| cascade | Cascading Style Sheets | CASE |
| case | case and paste | case based reasoning |
| CASE Data Interchange Format | CASE framework | case insensitive |
| Case Integration Services | CASE*Method | case sensitive |
| case sensitivity | CASE SOAP III | case statement |
| CASE tools | cashe | CAST |
| cast | casters-up mode | casting the runes |
| CAT | cat | Cat 3 |
| Cat 5 | catatonic | CATE |
| Categorical Abstract Machine Language | category | Category 3 |
| Category 5 | CA-Telon | cathode ray tube |
| CATIA | cationic cocktail | C/ATLAS |
| CATNIP | CATO | Cauchy sequence |
| cause-effect graphing | CAV | Cayenne Software, Inc. |
| CAYLEY | cb | CBASIC |
| CBBS | C-BC | CBD |
| C Beautifier | CBIR | CBN |
| CBR | CBT | CBV |
| CBVIR | cbw | cc |
| CC++ | C/C++ | CCalc |
| CCD | CCIRN | CCITT |
| CCITT HIgh-Level Language | CCL | CCLU |
| ccmail | cc:mail | CCP |
| CCR | CCS | CCSP |
| CCTA | CD | cd |
| CDA | CD burner | CDC |
| CDC 6600 | CDDI | CDD/Plus |
| CDE | CDF | CD-i |
| CDIF | CDL | CDM |
| CDMA | CDP1802 | CDPD |
| CDR | cdr | CD-Read-Write |
| CD-Rewritable | CD-ROM | CD-ROM drive |
| CD-RW | CDS | cd tilde |
| CDW | CE | Cecil |
| Cedar | CEEMAC+ | CEI-PACT |
| Celeron | CELIP | cell |
| Cellang | CELLAS | Cello |
| cell reference | CELLSIM | CEll Space Simulation Language |
| Cellular | cellular automata | cellular automaton |
| Cellular Digital Packet Data | cellular multiprocessing | Cellular Neural Network |
| CELP | CEN | CENELEC |
| centi-call second | central office | Central office exchange service |
| central processing unit | Centrex | Centronics |
| Centrum voor Wiskunde en Informatica | centum call second | century meltdown |
| CEN/XFS | cepstra | cepstrum |
| CEPT | CER | Ceramic Pin Grid Array |
| Ceres workstation Oberon System | Cerf, Vint | CERN |
| CERNLIB | CERT | Certificate Authority |
| CESP | CESSL | cextract |
| cf | CFD | CFG |
| CFML | cforth | cfortran.h |
| CFP | CFP92 | cg |
| CGA | CGGL | CGI |
| cgi-bin | CGI Joe | CGI program |
| CGI script | CGM | CGOL |
| cgram | Ch | ch |
| chad | chad box | Chadless keypunch |
| chain | Challenge-Handshake Authentication Protocol | Chalmers University of Technology |
| change management | changeover | channel |
| channel associated signaling | channel hopping | channel op |
| channel service unit | channel service unit/data service unit | chan op |
| chaos | CHAP | char |
| character | character encoding | character encoding scheme |
| character graphics | characteristic function | character key |
| character repertoire | character set | character set identifier |
| charge-coupled device | CHARITY | charityware |
| Charles Babbage | Charles Bachman | Charles Simonyi |
| CHARM | CHARM++ | Charme |
| CHARYBDIS | chase pointers | CHASM |
| chat | chatbot | chat room |
| chatterbot | CHeap ASseMbler | cheapernet |
| checkdigit | Checkout Test language | checkpoint |
| checksum | chemist | Chen |
| CHEOPS | Chernobyl packet | chess |
| CHI | Chicago | chicken head |
| chicklet keyboard | chiclet keyboard | Chief Information Officer |
| child | child process | child record |
| child version | CHILI | CHILL |
| Chimera | chine nual | Chinese Army technique |
| CHIP | chip | CHIP-48 |
| CHIP-8 | chip art | chip box |
| chip creep | chip graffiti | Chip Jewelry |
| Chip Scale Packaging | chip set | Chips & Technologies |
| CHISEL | chm | chmod |
| CHOCS | choke | chomp |
| CHOP | Chop | Chorus |
| Christmas tree | Christmas tree packet | Christopher Strachey |
| chromatic number | chrome | chroot |
| CHRP | chug | chug report |
| chunker | Church, Alonzo | Church integer |
| Church of the SubGenius | Church-Rosser Theorem | ci |
| CI$ | CICERO | Cichlid |
| CICS | CID | CIDR |
| CIEL | CIF | CIFS |
| Cigale | CIL | CIM |
| CIMS PL/I | Cinderella Book | CINT92 |
| C-Interp | CIO | ciphertext |
| CIP-L | CIP Language | CIR |
| CIRCAL | circuit | CIRcuit CALculus |
| circuit switch | circuit switched | circuit switching |
| circular buffer | Cirrus Logic | CIS |
| CISC | Cisco Systems, Inc. | CISI |
| CITRAN | CityScape | CIX |
| CJK | CJKV | ck |
| CL | cl | CLAM |
| C Language Integrated Production System | Clarify | Clarion |
| Claris | CLASP | class |
| Class 5 switch | class hierarchy | classic |
| Classic-Ada | classical logic | Classic C |
| Classless Inter-Domain Routing | class library | class method |
| class object | Class Oriented Ring Associated Language | Class-Relation Method |
| Clausal Language | clause | Clean |
| clean | cleanroom | CLEAR |
| clear box testing | Clear Language for Expressing Orders | CLEO |
| CLHEP | CLI | CLiCC |
| click | client | client/get_targets |
| client-server | client/server | Client-Server Analyst Programmer |
| client-server model | Client To Client Protocol | C++Linda |
| C-Linda | CLIP | CLiP |
| clipboard | Clipper | CLIPS |
| clique | CLISP | Clive Sinclair |
| CLIX | CLM | CLNP |
| clobber | clock | clock frequency |
| clock rate | clock speed | clone |
| clone-and-hack coding | clonebot | CLOS |
| close brace | closed-box testing | closed interval |
| closed set | closed term | close parenthesis |
| Clos network | closure | closure conversion |
| cloud | cloud computing | Clover |
| clover key | CLP | CLP* |
| CLP(R) | CLP(sigma*) | CLR |
| CLtL1 | CLtL2 | CLU |
| clu2c | cluster | Cluster 86 |
| clustergeeking | clustering | CLUT |
| CLV | CLX | CM |
| cm | CMA | CMAY |
| CMC | cmd | CMGA |
| CMIP | CMIS | CML |
| CMM | CMOS | CMP |
| CMS | CMS-2 | CMU |
| CMU CL | CMU Common Lisp | CMVC |
| CMYK | CMZ | cn |
| CNAME | CNC | CNET |
| CNI | C|N>K | CNN |
| CNR | CNRI | co |
| CO2 | Coad/Yourdon | COALA |
| coalesced sum | Coalition for Networked Information | coarse grain |
| COAST | coax | coaxial cable |
| COBOL | COBOL-1961 Extended | COBOL fingers |
| COBRA | cobwebsite | Cocktail |
| cocktail shaker sort | CoCo | Cocol |
| Coco Language | Cocol/R | COCOMO |
| Coco/R | CODASYL | Codd's First Normal Form |
| Codd's reduction algorithm | code | Code 2.0 |
| codebook | CODEC | CodeCenter |
| coded character set | Code Division Multiple Access | code division multiplexing |
| Code-Generator Generator Language | code grinder | code management |
| code police | code position | coder/decoder |
| codes | C-odeScript | code segment |
| code walk | codewalker | CODIL |
| codomain | coercion | COFF |
| COGENT | Cogent Prolog | Cognitech |
| cognitive architecture | COGO | Coherent Parallel C |
| COHESION | COIF | CoIP |
| cokebottle | COLASL | COLD |
| cold boot | ColdFusion | ColdFusion Markup Language |
| COLD-K | COLINGO | collision |
| collision detection | collocation | co-location |
| colon | color | Color Graphics Adapter |
| color model | Colossus | colour |
| colour depth | colour look-up table | colour model |
| colour palette | Columbia AppleTalk Package | column |
| Column Address Strobe | COM | com |
| COMAL | combination | combinator |
| combinatory logic | Combined object-oriented Language | Combined Programming Language |
| Comdex | COME FROM | COMIS |
| COMIT | Comité Européen de Normalisation | Comité Européen des Postes et Telecommunications |
| COMIT II | Comma | comma |
| command | Command Control Processor | command interpreter |
| command key | command line interface | command-line interpreter |
| command line option | comma separated values | COMMEN |
| comment | commented out | comment out |
| commercial at | Commercial Internet eXchange | commercial off-the-shelf software |
| commercial software | Commercial Translator | Committed Data Rate |
| Committed Information Rate | comm mode | Commodore |
| Commodore 1010 | Commodore 128 | Commodore 1541 |
| Commodore 1570 | Commodore 1571 | Commodore 1581 |
| Commodore 64 | Commodore 64DX | Commodore 65 |
| Commodore Business Machines | Commodore SX64 | COMmon Algorithmic Language |
| Common Applications Environment | Common Applications Service Element | Common Architecture for Next Generation Internet Protocol |
| COmmon Business Oriented Language | common carrier | Common Command Set |
| Common Communication Services | Common Data Format | Common Desktop Environment |
| Common ESP | Common Gateway Interface | Common Hardware Reference Platform |
| Common Information Model | Common Intermediate Format | Common Intermediate Language |
| Common Internet File System | Common-ISDN-API | Common ISDN Application Programming Interface |
| Common Lisp | Common LISP in Parallel | Common LISP Object System |
| CommonLoops | Common Management Information Protocol | Common Management Information Services |
| Common Object File Format | Common Object Model | Common Object Request Broker Architecture |
| Common Objects | Common Open Software Environment | Common Program Interface |
| Common User Access | Commonwealth Hackish | Communicating Functional Processes |
| Communicating Sequential Processes | Communication and Network Riser | Communications Decency Act |
| Communications of the ACM | communications port | Communications Server |
| communications software | communication system | Community of Massive Gaming Agency |
| COMNET | compact | Compact COBOL |
| Compact Disc | Compact Disc interactive | Compact Disc Read-Only Memory |
| Compact Disc Read-Write | Compact Disc Recordable | Compact Disc Rewritable |
| Compact Disc writer | compaction | compactness preserving |
| Compaq Computer Corporation | Compas Pascal | COMPASS |
| compatibility | compatible | Compatible Timesharing System |
| Compel | Competitive Access Provider | Compiled HTML |
| compiler | COmpiler and GENeralized Translator | compiler compiler |
| Compiler-Compiler | compiler-compiler | compiler jock |
| Compiler Language for Information Processing | Compiler Target Language | compile time |
| COMPL | complement | Complementary Metal Oxide Semiconductor |
| complementary nondeterministic polynomial | complete | complete graph |
| complete inference system | complete lattice | complete metric space |
| completeness | complete partial ordering | complete theory |
| complete unification | Complex Instruction Set Computer | complexity |
| complexity analysis | complexity class | complexity measure |
| complex number | complex programmable logic device | component |
| component architecture | component based development | Component Integration Laboratories |
| Component Object Model | com port | composite |
| composition | Compositional C++ | Compound Document Architecture |
| compound key | COMPREHENSIVE | Comprehensive Perl Archive Network |
| Comprehensive TeX Archive Network | compress | Compressed SLIP |
| compressed video | compression | COMPROSL |
| Compu$erve | Compulink Information eXchange | CompuServe |
| CompuServe Corporation | CompuServe Information Service | CompuServe Interactive Services |
| Compusult Ltd. | computability theory | computable |
| COMputable MAthematics | Computational Adequacy Theorem | computational complexity |
| Computational Fluid Dynamics | computational geometry | computational learning |
| computational molecular biology | COMpute ParallEL | Computer |
| computer | Computer Aided Design | Computer Aided Detector Design |
| Computer Aided Engineering | Computer-Aided Instruction | Computer-Aided Learning |
| Computer Aided Software Engineering | Computer-Aided Software Testing | Computer Aided Test Engineering |
| Computer Animation Movie Language | Computer-Assisted Learning | Computer-Assisted Software Engineering |
| Computer Associates International, Inc. | Computer-Based Training | computer bus |
| Computer Compiler | computer confetti | Computer Conservation Society |
| computer cookie | computer crime | Computer Design Language |
| computer dictionary | Computer Emergency Response Team | computer ethics |
| computer file | computer geek | computer-generated imagery |
| Computer Generation Incorporated | Computer Graphics Metafile | Computer Integrated Manufacturing |
| computer language | Computer Language for AeronauticS and Programming | computer law |
| computer literacy | Computer Management Group of Australia | Computer Mediated Communication |
| computer nerd | computer network | Computer Output on Microfilm |
| Computer Output to Laser Disc | Computer Output to Laser Disk | Computer Professionals for Social Responsibility |
| computer program | computer programming language | Computer + Science NETwork |
| computer security | computer sex | Computer Software Configuration Item |
| Computer-Supported Collaborative Learning | Computer Supported Cooperative Work | Computer Telephone Integration |
| Computer Telephony | Computer Telephony Integration | computer virus |
| computer vision | compute server | computing |
| Computing Devices Canada Ltd. | computing dictionary | computron |
| Compuware Corporation | COMSL | COMTRAN |
| ConC | concatenate | concatenated key |
| concentrator | conceptualisation | Concert/C |
| ConCoord | concrete class | Concrete Data Structure |
| concrete syntax | CONCUR | concurrency |
| Concurrent C | Concurrent C++ | Concurrent Clean |
| Concurrent CLU | Concurrent Constraint Programming | Concurrent Euclid |
| Concurrent LISP | Concurrent Massey Hope | Concurrent ML |
| Concurrent Oberon | Concurrent Object-Oriented C | Concurrent Object-Oriented Language |
| Concurrent Pascal | concurrent processing | Concurrent Prolog |
| Concurrent Scheme | ConcurrentSmalltalk | Concurrent SP/k |
| Concurrent Versions System | condela | condition out |
| condom | Conference On DAta SYstems Languages | Conferencing over IP |
| confidence test | CONFIG.SYS | configuraholic |
| configuration item | configuration management | configuration programming |
| configure | conflation | congestion |
| CONIC | conjunction | Conjunctive Normal Form |
| connect | connected graph | connected subgraph |
| Connection Definition Language | connectionless protocol | Connection Machine LISP |
| connection-oriented | connection-oriented network service | connective |
| connector conspiracy | CONNIVER | Co-NP |
| CONS | cons | cons cell |
| conservative evaluation | considered harmful | consistently complete |
| console | console jockey | consortium |
| Consortium for Lexical Research | constant angular velocity | constant applicative form |
| constant folding | Constantine/Yourdon | constant linear velocity |
| constant mapping | constraint | constraint functional programming |
| Constraint Handling In Prolog | ConstraintLisp | Constraint Logic Programming |
| CONSTRAINTS | constraint satisfaction | constructed type |
| Constructive Cost Model | constructive proof | constructive solid geometry |
| constructor | Consul | consultant |
| container class | content addressable memory | content-based information retrieval |
| content-based visual information retrieval | Content Data Model | content-free |
| contention slot | Contents of Address part of Register | Contents of Decrement part of Register |
| context | context clash | COntext Dependent Information Language |
| context-free grammar | context-sensitive menu | context switch |
| Contextually Communicating Sequential Processes | continental drift | continuation |
| Continuation Passing Style | continuation passing style | continuations |
| continuous function | Continuous System Modeling Program | Continuous System Simulation Language |
| continuous wave | contraction | contract programmer |
| control | Control and Status Register | control bus |
| control-C | control character | control code |
| control flow | control-G | control key |
| Control Language | COntrolled Working SpacE Language | controller |
| control-O | Control Program | Control Program for Microcomputers |
| control-Q | control-S | control structure |
| control tty | control unit | conventional memory |
| converged network | Convergent Technologies | Convergent Technologies Operating System |
| Conversational LISP | Conversational Monitor System | converse |
| conversion to iteration | CONVERT | convert.f90 |
| Convex Computer Corporation | convex hull | Conway, John Horton |
| Conway's Game of Life | Conway's Law | Conway's Life |
| cooC | cooccurrence matrix | cookbook |
| cooked mode | cookie | cookie bear |
| cookie file | cookie jar | cookie monster |
| cooky | COOL | CooL |
| COOL:Gen | Cooperation for Open Systems Interconnection Networking in Europe | Co-operative Development Environment |
| Cooperative Information System | cooperative multitasking | coordinate |
| Coordinated Universal Time | Coordinating Committee for Intercontinental Research Networks | coordination language |
| copious free time | copper | Copper Distributed Data Interface |
| coprocessor | copy and paste | copybook |
| copybroke | copying garbage collection | copyleft |
| copy member | copy module | copy protection |
| copyright | copyright symbol | copywronged |
| CORAL | CORAL 66 | CORBA |
| CORBIE | CORC | core |
| core cancer | core dump | core gateway |
| Corel Corporation | core leak | Corel VENTURA |
| Core Protocol Stack | Core War | corge |
| CORnell Compiler | Cornell List Processor | Cornell Theory Center |
| Cornell University | Coroutine Pascal | Corporation for National Research Initiatives |
| Corporation for Open Systems | Corporation for Research and Educational Networking | CORREGATE |
| Correlatives and Conversions | Cortex | CORTL |
| COS | COSE | COSINE |
| cosmic rays | COSS | cost control callback |
| Cost Driver Attribute | Cost/Schedule Control System Criteria | COTS |
| Cougar | cough and die | count |
| countable | countably many | counted |
| counterbug | country code | coupling |
| Course Author Language | courseware | Coursewriter III |
| cowboy | COWSEL | CP |
| CPAN | CParaOps5 | CPE |
| CPGA | CPI | CPL |
| CPLD | CPM | CP/M |
| cpo | cpp | cppp |
| C preprocessor | C Programmer's Disease | C-Prolog |
| cproto | CPS | CPSR |
| CPU | CPU Info Center | CPU time |
| CPU Wars | CR | cr |
| cracker | cracking | crack root |
| crank | crapplet | CrApTeX |
| crash | crash and burn | crawler |
| crawling horror | Cray instability | crayola |
| crayola books | crayon | Cray Research, Inc. |
| CRC | creationism | creeping elegance |
| creeping featurism | creeping featuritis | C-Refine |
| CREN | CREW PRAM | crippleware |
| criptography | Crisis Software | CRISP |
| crisp | Crispy Critters | critical mass |
| critical section | CRL | CRLF |
| CRM | crock | cron |
| cross-assembler | cross-compiler | cross-platform |
| cross-post | cross software | CROSSTABS |
| crosstalk | CROW PRAM | CRT |
| CRUD | crudware | cruft |
| crufted | cruft together | crumb |
| crunch | cruncha cruncha cruncha | crunchy |
| cryppie | crypt | cryptanalysis |
| Crypt Breakers Workbench | cryptography | CryptoLocker |
| cryptology | Crystal | CS-4 |
| C-Scheme | CSCI | C/SCSC |
| CSCW | CSG | CSG-tree |
| csh | C-sharp | C shell |
| CSID | C++SIM | CSK Corporation |
| CSK Software | CSL | CSLIP |
| CSM | CSMA/CD | CSMP |
| CSNET | CSO | C=S;O=A |
| CSP | CSP/80 | CS/PCode |
| CSP/k | CS-Prolog | CSPS |
| CSP-S | CS/QCode | CSR |
| CSS | CSSA | CSS/II |
| CSSL | CSTools | CSU |
| CSU/DSU | CSV | CT |
| CTC | CTC++ | CTCP |
| CTI | CTL | CTOS |
| ctrl | CTS | CTSS |
| CTY | CU | cu |
| CUA | Cube | cube |
| cubing | CUCH | Cuckoo's Egg |
| CUL | Culler-Fried System | CUPID |
| CUPL | curly bracket | current |
| curried function | currying | curseperl |
| curses | cursor | cursor dipped in X |
| CU-SeeMe | CUSI | cuspy |
| custom | Customer Information Control System | Customer Information Systems |
| Customer Interaction Software | Customer Relationship Management | CUT |
| cut and paste | cut-and-waste code | cut a tape |
| cutover | cut-through switching | cv |
| c/version.js | CVS | CW |
| CWeb | CWI | CWIC |
| CWIS | C with Classes | cx |
| cxref | cy | Cy486SLC |
| cyber | cyberbunny | cyberchondriac |
| cybercrime | cybercrime as a service | cybercrud |
| CyberGlove | cybernetics | cyberpunk |
| cyberrhea | cybersex | cyberspace |
| cyberspastic | cyber-squatting | CyberWand |
| CyberZine | CYBIL | Cyc |
| CYCL | cycle | cyclebabble |
| cycle crunch | cycle drought | cycle of reincarnation |
| cycle server | cyclic redundancy check | cyclic redundancy code |
| Cyclo | cyclomatic complexity | Cygnus Tcl Tools |
| cylinder | CypherText | Cyrix |
| Cyrix 6x86 | cz | D |
| D-1000 | DAA | DAC |
| DACAPO | DACNOS | D/A converter |
| DACTL | DADS | daemon |
| DAG | Daisy | DAISY 201 |
| daisy chain | daisywheel printer | dancing frog |
| dangling pointer | DANTE | DAP Fortran |
| DAPLEX | DARE | dark-side hacker |
| Darms | DARPA | Dartmouth BASIC |
| Darwin | DAS | DASD |
| DASE | DASL | DAT |
| data | data abstraction | data acquisition |
| Data Address Generator | database | database administrator |
| database analyst | database machine | database management system |
| database manager | database normalisation | database query language |
| database server | database transaction | Data/BASIC |
| DATABUS | data bus | datacenter manager |
| data channel | DATACODE I | Datacom |
| Data Communication Equipment | data communications analyst | Data Communications Equipment |
| data compression | Data definition language | data dictionary |
| data dictionary file | data driven | Data Driven Machine |
| Data Encryption Algorithm | Data Encryption Key | Data Encryption Standard |
| data feed | data flow | data flow analysis |
| Data Flow Diagram | data fork | data frame |
| Data General | Data General mN601 | data glove |
| datagram | data hierarchy | data integrity |
| Data Interchange Standards Association | Data Jack | Datakit |
| Dataless Management Services | dataless management utility | Data Link Connection Identifier |
| data link layer | data link level | Data Link Provider Interface |
| Data Link Switching | data logger | data logging |
| Data Management Language | Data Manipulation Language | data mart |
| Datamatic Corporation | Datamation | data mining |
| data model | data modeling | data modelling |
| Data Over Cable Service Interface Specification | Data Over Cable Systems Interface Specifications | data packet |
| Dataparallel-C | Data Parallel Haskell | data path |
| Dataphone Digital Service | DataPoint | data processing |
| Data Protection Act | data rate | data redundancy |
| data segment | data service unit | data set |
| data set organization | DataStage | data storage |
| Datastorm Technologies, Inc. | data striping | data structure |
| Data Structure Diagram | Data Structures Language | Data Terminal Equipment |
| Data Terminal Ready | DATA-TEXT | data transfer |
| data transfer rate | DATATRIEVE | Datatron 200 series |
| data type | DataViews | DataVis |
| data warehouse | data warehousing | date |
| DAU | daughter | daughterboard |
| daughtercard | David Turner | day mode |
| DAZIX | DB | DB2 |
| DB-25 | DB2 catalog | DBA |
| dBASE | DBC | DBCS |
| dBFAST | DBH | DBMS |
| DBPL | DBRI | dbx |
| dBXL | DC | DC1 |
| DC2 | DC3 | DC4 |
| DCA | DCAC | DCALGOL |
| DCC | DCDL | DCE |
| DCG | DCI | DCL |
| DCOM | DCP | D. C. Power Lab |
| DCS | DCT | DD |
| dd | DDB | DDCMP |
| DDE | DDE Manager | DDIF |
| DDL | DDM | DDN |
| DDO | DDoS | DDP |
| DDR | DDR-RAM | DDR-SDRAM |
| DDS | DDT | DDW |
| de | DE-9 | DEA |
| DEACON | dead | DEADBEEF |
| dead code | dead code elimination | dead-drop |
| deadlock | deadly embrace | dead tree |
| dead tree edition | deamon | death code |
| Death Star | deb | Debbugs |
| Debian | Debian GNU/Hurd | Debian GNU/Linux |
| debianize | deboursification | De Bruijn graph |
| De Bruijn notation | DEBUG | debugger |
| debugging | debugging an empty file | debugging by printf |
| debugging tool | DEC | dec |
| DEC Alpha | decay | DECdesign |
| DECdns | DEChead | dechunker |
| decidability | decidable | decimal point |
| decision problem | decision support | decision support database |
| Decision Support Systems | decision theory | deckle |
| declarative language | DECmate I | DECnet |
| decode | Decomposed Petri Net | decompress |
| decorated name | decrement operator | decryption |
| DECstation | DECT | DECtape |
| DECUS | Decus cpp | DEC Wars |
| DECwindows | DECwrite | DED |
| dedicated line | deductive database | deductive tableau |
| Deep Blue | deep hack mode | deep magic |
| deep space | de facto standard | default |
| default.htm | default route | defect |
| defect analysis | defect density | Defense Advanced Research Project Agency |
| Defense Advanced Research Projects Agency | Defense Calculator | Defense Communications Agency |
| Defense Data Network | Defense Data Network Network Information Center | Defense Information Systems Agency |
| Defense Trade Regulations | deferral | definite clause |
| definite sentence | definitional constraint programming | deflate |
| deflate compression | deflate/inflate compression | deforestation |
| defrag | defragment | defunct process |
| degree | degrees of freedom | dehose |
| DEK | Delaunay triangulation | delayed control-transfer |
| delay instruction | delay slot | delete |
| delimiter | delint | Delirium |
| Delivered Source Instruction | Dell Computer Corporation | Delphi |
| Delphi Technique | Delta | delta |
| Delta-4 | delta conversion | Delta-Prolog |
| delta reduction | DELTASE | demand driven |
| demand paged | demand paging | DeMarco |
| DeMarco/Yourdon | demented | Demeter |
| demigod | De-Militarised Zone | demo |
| demodulate | demodulation | demo mode |
| demon | Demon Internet Ltd. | DeMorgan's theorem |
| demo version | Denis Howe | Dennis Ritchie |
| denotational semantics | Denotational Semantics Language | Department of Defense |
| Department of Defense Network | depeditate | dependability |
| dependable software | Deployment Descriptor | deprecated |
| depth-first search | deque | dequeue |
| DER | dereference | de-rezz |
| derived class | derived type | DES |
| descender | descent function | Descriptive Intermediate Attributed Notation for Ada |
| Descriptive Top-Level Specification | descriptor | design |
| Design In Real Time | design pattern | design recovery |
| Design System language | desk check | desktop |
| desktop database | Desktop Management Interface | Desktop Management Task Force |
| desktop manager | desktop publisher | desktop publishing |
| DESQview | destructor | DESY |
| DETAB | deterministic | deterministic automaton |
| DETOL | developer | development |
| Developmental Test and Evaluation | development environment | device |
| Device Control | Device Control 1 | Device Control 2 |
| Device Control 3 | Device Control 4 | device driver |
| device independent bitmap | Device Manager | Devil Book |
| devo | DEX | DFA |
| DFC | DFD | D-Flat |
| DFS | DFT | DGL |
| DG/L | DHCP | Dhrystone |
| DHSD | DHTML | Dialled Number Identification Service |
| DIALOG | dialup | DIAMAG |
| diameter | Diamond | DIANA |
| DIB | DIBOL | dickless workstation |
| Dick Size War | DICOM | dictionary |
| Dictionary APL | dictionary flame | Dictionary of Algorithms and Data Structures |
| Dictionary of Computing | DID | diddle |
| Didot point | die | die horribly |
| diff | Difference Engine | difference equation |
| differential backup | differential driver | differential line |
| Diffie-Hellman | digerati | digest |
| Digex | DigiCash | Digicom |
| digirati | digit | Digital |
| digital | digital audio | Digital Audio Tape |
| digital camera | digital carrier | digital certificate |
| digital computer | Digital Control System | digital dashboard |
| Digital Data Service | digital electronics | Digital Enhanced Cordless Telecommunications |
| digital envelope | Digital Equipment Computer Users Society | Digital Equipment Corporation |
| Digital Equipment Corporation Network | Digital European Cordless Telecommunications | Digital Express Group, Inc. |
| Digital Lempel Ziv 1 | Digital Library Initiative | Digital Linear Tape |
| digital logic | Digital Multimeter | Digital Radio Mondiale |
| Digital Research | Digital Rights Management | digital service unit |
| Digital Signal Processing | Digital Signal Processing Language | digital signature |
| digital signatures | Digital Signature Standard | Digital Simulation Language |
| Digital Simultaneous Voice and Data | DIGITAL Standard MUMPS | Digital Subscriber Line |
| Digital Subscriber Line Access Module | Digital Subscriber Loop | Digital Switched Network |
| Digital to Analog Converter | Digital Versatile Disc | Digital Versatile Disk Random Access Memory |
| Digital Video Disc | Dijkstra's guarded command language | dike |
| DIL | Dilbert | Dilberted |
| DIM | DIMATE | DIMM |
| DIM statement | DIN | DIN-8 |
| ding | Dining Philosophers Problem | dink |
| DinnerBell | DINO | dinosaur |
| dinosaur pen | dinosaurs mating | diode |
| Diophantine equation | DIP | diplex |
| DIPP | Direct-Access Storage Device | Direct Client to Client Protocol |
| Direct Connection | directed acyclic graph | directed graph |
| Directed Oc | directed set | Direct Inward Dialing |
| directional coupler | Directly Executable Test Oriented Language | direct mapped cache |
| Direct Memory Access | directories | directory |
| Directory Access Protocol | directory service | Directory System Agent |
| Directory User Agent | DirectX | DIRFT |
| Dirt | dirtball | dirty power |
| dis | DISA | disaster planning |
| disaster recovery | disc | disc drive |
| disclaimer | disconnect | Discordianism |
| discrete | discrete cosine transform | discrete Fourier transform |
| discrete preorder | discriminated union | discussion group |
| Disiple | disjoint union | Disjunctive Normal Form |
| disk | disk controller | disk drive |
| disk duplexing | diskette | disk farm |
| diskless workstation | disk mirroring | Disk Operating System |
| disk operating system | disks | disk striping |
| Dislang | disman | display |
| display hack | Display PostScript | Display Screen Equipment |
| display standard | display standards | display terminal |
| Dissociated Press | distfix | Distinguished Encoding Rules |
| Distributed Component Object Model | Distributed Computing Environment | distributed database |
| Distributed Data Management | distributed data warehouse | Distributed Denial of Service |
| Distributed Eiffel | Distributed Logic Programming | Distributed Management Environment |
| distributed memory | Distributed Network Operating System | Distributed Operating Multi Access Interactive Network |
| Distributed Processes | Distributed Queue Dual Bus | Distributed Smalltalk |
| distributed system | distributed systems | distribution |
| distributive lattice | disusered | dithering |
| Ditto Drive | diverge | divisor |
| dj | DJGPP | DjVu |
| DK | dk | DL/1 |
| DLC | DLCI | DLE |
| DLG | DL/I | DLL |
| DLM | DLP | DLPI |
| DLSw | DLT | DLUR/DLUS |
| DLZ1 | dm | DMA |
| DMAD | dmake | DMALGOL |
| DME | DMI | DML |
| DMM | DMS | DMTF |
| DMU | DMZ | DNA computing |
| DNF | DNIS | DNIX |
| DNOS | DNS | do |
| DOA | Doc | doc |
| docking station | DOCMaker | doco |
| DOCSIS | doctype decoration | document |
| documentation | Document Examiner | Document Image Processing |
| Document Object Model | Document Style Semantics and Specification Language | Document Type Definition |
| DOCUS | DoD | DoD-1 |
| dodgy | DOD-STD-2167A | DoD-STD-2168 |
| DOE | DOF | dog |
| dogcow | dogfood | dogfooding |
| dogpile | dogwash | Do It Right the First Time |
| Dojo | DOL | dollar |
| do loop | DOM | domain |
| domain address | Domain Analysis | domain architecture |
| Domain Architecture Model | domain calculus | domain driven design |
| domain engineering | domain handle | domainist |
| domain maturity | domain model | domain name |
| Domain Name Server | Domain Name System | domain selection |
| Domain Software Engineering Environment | domain-specific language | domain squatter |
| domain theory | Domestic Communications Assistance Center | DOMF |
| Donald Knuth | dongle | dongle cracker |
| dongle-disk | Don't do that then! | donuts |
| Dooced | DOOM | DOORS |
| doorstop | Dorito Syndrome | DORUM |
| DOS | DOS/360 | DOS Protected Mode Interface |
| DOS requester | dot | dot address |
| dot com | dotenv | dot file |
| dot leaders | dot matrix printer | dot notation |
| dot pitch | dotted pair | dotted quad |
| double bucky | double-click | Double Data Rate Random Access Memory |
| Double Data Rate Synchronous Random Access Memory | double DECkers | double density |
| doubled sig | double-duplex | double-ended queue |
| double quote | doubly linked list | DOUGLAS |
| Douglas Engelbart | Doug Lenat | DOW COMPILER |
| Do What the Fuck You Want to Public License | do while | down |
| download | downloading | downsizing |
| downstream | down-time | downward closed |
| Downy cocktail | DP | DPA |
| DPB | DPer | dpi |
| DPL | DPL-82 | DPLL |
| DPMI | DPMS | DPN |
| DPP | d-Prolog | DPS |
| DPS-6 | dpSather | DPSK |
| DQDB | draco | Draft Once ReUse Many |
| drag | drag and drop | dragging |
| drag-n-drop | DRAGON | dragon |
| Dragon Book | DRAGOON | drain |
| DRAM | DRAM refresh | Drawing eXchange Format |
| dread high bit disease | DREAM 6800 | DRECNET |
| drill down | drill-down analysis | drive |
| drive-by download | drivers | Dr. James H. Clark |
| DRM | droid | DROOL |
| drool-proof paper | drop cable | drop-down list |
| drop-down menu | drop-ins | drop on the floor |
| drop-outs | DrScheme | DRUCO I |
| drugged | drug report | drum |
| drunk mouse syndrome | dry run | DS0 |
| DS1 | DS1C | DS2 |
| DS3 | DSA | DSDM |
| DSE | DSEE | D-shell connector |
| DSI | DSL | DSLAM |
| DS level | DSM | DSN |
| DSO | DSORG | DSP |
| DSP32 Assembly Language | DSP56000 | DSP56001 |
| dsp56165-gcc | dsp56k-gcc | DSP/C |
| DSPL | DSR | DSS |
| DSSSL | DST | DSU |
| DSVD | DSW | DTALGOL |
| DTD | DTE | DT&E |
| DTLS | DTMF | DTP |
| DTR | DTS | DTSS |
| D-type | D-type flip-flop | du |
| DUA | dual | DUAL-607 |
| dual-attached | dual boot | dual-homed |
| Dual In-Line | Dual In-line Memory Module | Dual In-Line Package |
| dual ported | dual-stack | Dual Tone Multi Frequency |
| duck typing | DUEL | duff |
| Duff's device | dumbed down | dumb terminal |
| dump | dumpster diving | Dungeon |
| dup killer | duplex | Duplex High Speed Data |
| dup loop | Durra | dusty deck |
| DV cartridge | DVD | DVD-R |
| DVD-RAM | DVD-ROM | DVI |
| Dvorak | Dwarf Storage Unit | DWDM |
| dweeb | dwg | DWIM |
| DX4 | DXF | dyadic |
| Dyadic Systems Limited | Dyalog APL | Dyalog Limited |
| DYANA | Dylan | Dylperl |
| dynamic adaptive routing | Dynamic Address Translation | Dynamically Linked Library |
| dynamically scoped | dynamically typed | dynamic analysis |
| dynamic binding | dynamic database management system | Dynamic Data Exchange |
| Dynamic Data Linking | dynamic DBMS | Dynamic Drive Overlay |
| Dynamic Execution | Dynamic Host Configuration Protocol | Dynamic HTML |
| DYnamic LANguage | dynamic link | dynamic link library |
| Dynamic Object-Oriented Requirements System | dynamic RAM | dynamic random-access memory |
| dynamic routing | DYnamics ANAlyzer | dynamic scope |
| dynamic scoping | Dynamic Systems Development Method | dynamic translation |
| dynamic typing | DYNAMO | Dynix |
| Dynix Automated Library Systems | dynner | DYSAC |
| DYSTAL | dz | E |
| E1 | E2 | E2ES |
| E3 | E4 | E5 |
| E-acute | EAF | EAG |
| eager evaluation | Eagle | EAI |
| EAPROM | earliest deadline first | Early PL/I |
| EARN | EAROM | earthquake |
| Ease | EASE II | EASIAC |
| EAST | easter egg | Easter egging |
| Eastern Washington University | EASY FOX | eat flaming death |
| eating one's own dogfood | eating your own dogfood | EAX |
| EBASIC | EBCDIC | EBCIDIC |
| EBNF | Ebone | ec |
| EC++ | ECAP II | E-carrier system |
| Ecash | ECC | Eccles-Jordan circuit |
| Echidna | echo | echo cancellation |
| ECHT | ECIP2 | ECIS |
| Eckert-Mauchly Computer Corporation | ECL | ECLIPSE |
| ECM | ECMA | ECMA International |
| ECMAScript | Ecole Normale Superieure | e-commerce |
| Econet | ECOOP | ECP |
| ECRC | ECRC-Prolog | ECSL |
| ECSP | ECSS II | ECSSL |
| ed | EDA | EDAC |
| e-ddress | Eden | Eden Programming Language |
| EDF | EDI | EDI analyst |
| EDIF | EDIFACT | Edinburgh Multi Access System |
| Edinburgh Prolog | Edinburgh SML | Edison |
| edit | editor | EDL |
| EDM | EdML | EDMS |
| Ed Nather | EDO DRAM | EDO memory |
| EDO RAM | EDP | EDP auditor |
| EDRAM | EDS | EDS+ |
| EDSAC | edu | education contact |
| edutainment | Edward Lorenz | Edward Yourdon |
| Edwin | ee | EEMA |
| EEPROM | EER | E. F. Codd |
| EFF | effective computable | effective number of bits |
| Effort Adjustment Factor | EFI | EFL |
| EFNet | Eforth | E-Forth |
| EFT | EFTPOS | EFTS |
| eg | EGA | Eggdrop |
| egosurfing | EGP | egrep |
| Egyptian brackets | Eh | eh |
| eHelp Corporation | EHTS | EIA |
| EIA-232 | EIA-232C | EIA-422 |
| EIA-423 | EIA-449 | EIA-485 |
| EIA-530 | EIDE | Eiffel |
| Eiffel source checker | eigenvalue | eigenvector |
| eight-bit clean | eight queens problem | eight queens puzzle |
| eighty-column mind | eighty-twenty rule | EIRP |
| EISA | EJB | Eksi Sozluk |
| EL1 | el(alpha) | Elan |
| El Camino Bignum | elder days | e-learning |
| Electing a Pope | Electrically Alterable Programmable Read-Only Memory | Electrically Erasable Programmable Read-Only Memory |
| Electromagnetic Compatibility | electromigration | electron |
| electronic commerce | Electronic Commerce Dictionary | electronic data interchange |
| Electronic Data Processing | Electronic Design Automation | Electronic Discrete Sequential Automatic Computer |
| Electronic Frontier Foundation | electronic funds transfer | Electronic Funds Transfer Point of Sale |
| electronic funds transfer system | electronic magazine | electronic mail |
| electronic mail address | electronic mail client | electronic meeting |
| Electronic Numerical Integrator and Computer | Electronic Performance Support System | Electronic Piece Of Cheese |
| Electronic Report Management | Electronics Industry Association | electronic whiteboarding |
| electron model | electron tube | Electrostatic Discharge |
| elegant | element | elephant |
| elephantine | elevator controller | ELF |
| ELI | Eli Compiler Construction System | ELISP |
| elite | ELIZA | ELIZA effect |
| Elk | ELLA | Ellemtel |
| Ellie | ELLIS | elm |
| ELMAGUIDE | ELMAMETA | ELP |
| ELSIE | Elvis | elvish |
| EM | EM-1 | EMA |
| Emacs | Emacs Lisp | e-mail |
| e-mail address | e-mail client | EMAS |
| Embedded Lisp Interpreter | Embedded Mode | embedded system |
| embedding | EMBLA Pro | embosser |
| EMC | EMD Enterprises, Inc. | EMDIR |
| Emerald | EMI | Emitter Coupled Logic |
| EML | EMM | EMM386 |
| emote | emoticon | empeg |
| empire | empty element tag | Empty Nest |
| EMS | emTeX | EMU8000 |
| emulation | emulator | Emulator program |
| EMX | enabling | Encapsulated PostScript |
| encapsulation | encode | encoder |
| encryption | endian | endless loop |
| End Of Line | End of Medium | End Of Text |
| End Of Transmission | end tag | end-to-end solution |
| End Transmission Block | end-user | engage |
| Engelbart, Douglas | engine | English |
| English shellcode | enhanced | Enhanced Capabilities Port |
| Enhanced Directory Service | Enhanced Dynamic Random Access Memory | Enhanced Graphics Adapter |
| Enhanced IDE | Enhanced Integrated Drive Electronics | enhanced parallel port |
| Enhanced Small Disk Interface | enhancement | ENIAC |
| Enigma | ENOB | ENQ |
| enqueue | ENS | Ente Nazionale Italiano di Unificazione |
| enterprise | Enterprise Application Integration | Enterprise JavaBeans |
| Enterprise Report Management | Enterprise Resource Planning | Enterprise Systems CONnectivity |
| EntireX | entity | entity-relationship diagram |
| entity-relationship model | entropy | Entry Sequenced Data Set |
| enumerated type | enumeration | environment |
| Environmental Audio eXtensions | environment variable | Envoy |
| EOF | EOL | EOR |
| EOT | EOU | EOUG |
| EP | EPCS | ephemeral port |
| EPILOG | EPIM | epistasis |
| EPL | EPOC | epoch |
| EPP | EPROM | EPROM OTP |
| EPROS | EPS | EPSILON |
| epsilon | epsilon squared | EPSIMONE |
| EPSS | EqL | EQLOG |
| EQLog | Eqn | equals |
| equational logic | Equational Programming Language | Equel |
| equivalence class | equivalence class partitioning | equivalence partitioning |
| equivalence relation | equivalent isotropically radiated power | ER |
| er | ERA | era |
| Erasable Programmable Read-Only Memory | erase | eraser stains code |
| ERC | ERCIM | ERD |
| EREW PRAM | ERFPI | ergonomic |
| ergonomics | ERGO-Shell | Eric Conspiracy |
| Eric S. Raymond | Eris | Erlang |
| ERM | erotica | ERP |
| error | error-based testing | error correcting memory |
| error detection and correction | es | ES-1 |
| ESA | ESC | ESCAPE |
| escape | escape sequence | ESCD |
| ESCON | escrow | ESD |
| ESDI | ESF | ESI |
| esim | ESL | ESLPDPRO |
| ESML | ESMTP | esolang |
| esoteric programming language | ESP | ESPOL |
| ESPRIT | ESR | essential complexity |
| Estelle | Esterel | EstPC |
| ET | et | ET++ |
| eta abstraction | eta conversion | eta expansion |
| eta reduction | ETB | ETC |
| e-text | ETHER | EtherGate |
| Ethernet | Ethernet address | Ethernet meltdown |
| Ethernet Private Line | EtherTalk | ethics |
| ETL | ETM | ETRN |
| ETSI | ETX | Euclid |
| Euclidean Algorithm | Euclidean norm | Euclid's Algorithm |
| Eudora | EULA | EULER |
| EuLisp | EUnet Ltd. | Euphoria |
| Eureka | Eureka step | Eurisko |
| Eurocard | Euro-ISDN | EuroNet |
| EuropaNET | European Academic and Research Network | European Committee for Standardization |
| European Computer-Industry Research Centre GmbH | European Computer Manufacturers Association | European Strategic Programme for Research in Information Technology |
| European Telecommunications Standards Institute | EUUG | EV6 |
| Eva | EVALUATE | evaluation |
| evaluation strategy | evaluator | EVE |
| event | Event Description Language | event-driven |
| EVGA | evolutionary algorithm | evolutionary computation |
| evolutionary programming | evolution strategy | EWOS |
| exa- | Exabyte | exabyte |
| examining the entrails | EXAPT | Excalibur bug |
| Exceed | Excel | Excelan |
| Excelerator | exception | exception handler |
| EXCH | Exchange Server | excl |
| exclamation mark | exclamation point | exclusive or |
| EXCP | EXE | EXEC |
| exec | EXEC 2 | EXEC 8 |
| executable | executable content | execute |
| Execute Channel Program | execution | executive |
| Executive Systems Programming Oriented Language | exercise, left as an | exhaustive testing |
| existence proof | existential quantifier | exit |
| EXODUS | eXodus | EXOS |
| expanded memory | expanded memory manager | expanded memory page frame |
| Expanded Memory Specification | expansion card | expansion slot |
| expect | eXperimental LISP | Experimental Physics Control Systems |
| Experimental Programming Language | Experiment Description Language | Expert Judgement Models |
| expert system | Expert Systems Ltd. | explicit parallelism |
| explicit type conversion | exploit | Exploratory Data Analysis |
| exponent | exponential | exponential-time |
| exponential-time algorithm | Express | expression |
| expression tree | extend | Extended Affix Grammar |
| Extended ALGOL | Extended Architecture | Extended Backus-Naur Form |
| Extended Binary Coded Decimal Interchange Code | Extended BNF | Extended C++ |
| Extended Capabilities Port | Extended Concurrent Prolog | Extended Data Out Dynamic Random Access Memory |
| Extended Data Out Random Access Memory | Extended Fortran Language | eXtended Graphics Array |
| Extended Industry-Standard Architecture | extended memory | extended memory manager |
| Extended Memory Specification | Extended ML | Extended Pascal |
| Extended Self-containing Prolog | Extended System Configuration Data | Extended Systems Modelling Language |
| Extended Tcl | Extended Tiny | Extended Video Graphics Array |
| eXtended Video Graphics Array | ExTendible Compiler | extensible |
| extensible database | Extensible Firmware Interface | Extensible HyperText Markup Language |
| Extensible Markup Language | Extensible Shell | Extensible Stylesheet Language |
| Extensible Stylesheet Language Transformations | Extensible VAX Editor | extension |
| extensional | extensional equality | extensionality |
| Extension Language Kit | Exterior Gateway Protocol | eXternal Data Representation |
| External Machine Interface | external memory | EXTRA |
| extranet | extrapolate | extrapolation |
| EXUG | eyeball search | EZ |
| ezd | e-zine | F100-L |
| f2c | F2F | F68K |
| FAC | facebook.com | face time |
| face-to-face | Facile | facsimile |
| FACT | fact | factor |
| factorial | FAD | failback |
| failover | failure | failure-directed testing |
| FAIR | Fairchild F8 | fall back |
| fall forward | fall over | fall through |
| fall thru | FALSE | FancyIndexing |
| fandango on core | fan-out | FAP |
| FAQ | FAQL | FAQ list |
| faradise | farkled | farm |
| farming | FARNET | fas |
| FASBOL | fascist | FASE |
| FAST | Fast ATA | Fast ATA-2 |
| Faster LEX | Fast Ethernet | Fast Fourier Transform |
| Fast Packet | Fast Page Mode Dynamic Random Access Memory | Fast SCSI |
| FAT | FAT32 | fatal |
| fatal error | fatal exception | fat binary |
| fat client | fat electrons | fault |
| fault-based testing | fault tolerance | fault tolerant |
| Fault Tolerant Unix | fault tree analysis | favicon.ico |
| fax | Fax over IP | FC |
| FC-AL | FCB | F-code |
| FCP | FC-PGA | FCS |
| FDC | FDD | FDDI |
| FDISK | fd leak | fdlibm |
| FDMA | FDSE | FDSP |
| FDT | fdx | FEA |
| fear and loathing | fear-driven development | feasibility study |
| feasible | feature | feature creature |
| feature creep | featurectomy | feature key |
| feature shock | FEC | FED |
| Federal Geographic Data Committee | Federal Information Exchange | Federal Information Processing Standards |
| Federal Networking Council | federation | Federation Against Software Theft Limited |
| Fedora | feed | feedback |
| feedback control | feed-forward | Feel |
| feep | feeper | feeping creature |
| feeping creaturism | FEL | femto- |
| fence | fencepost error | fepped out |
| FEPROM | Fermat prime | Fermat's Last Post |
| Ferranti F100-L | ferrite core memory | Ferroelectric RAM |
| Ferroelectric Random Access Memory | Fetch | fetch-execute cycle |
| Feynman, Richard P. | FF | ffccc |
| FFP | FFT | FGDC |
| FGHC | FGL | FGL+LV |
| FGRAAL | fgrep | FhG |
| FHS | FHSS | fi |
| Fiber Distributed Data Interface | Fiber Optic InterRepeater Link | fiber optics |
| Fibonacci sequence | Fibre Channel | Fibre Channel-Arbitrated Loop |
| fibre optics | FIDIL | FIDO |
| FidoNet | Fidonews | field |
| field circus | field effect transistor | field emission display |
| field mouse | field-programmable gate array | field servoid |
| FIFO | Fifth | Fifth Dimension Technologies |
| fifth generation language | fifth normal form | Fight-o-net |
| file | File Allocation Table | File Attach |
| File Composition | file compression | file control block |
| file descriptor | file descriptor leak | file extension |
| FileMaker | FileMaker, Inc. | filename extension |
| FileNet | File Request | File Separator |
| file server | File Service Protocol | file signature |
| file system | Filesystem Hierarchy Standard | file transfer |
| File Transfer Protocol | file type | filing system |
| filk | fill-out form | film at 11 |
| FILO | Filtabyte | filter |
| filter promotion | FIMS | Finagle's Law |
| Financial Information eXchange | Finder | fine adjuster |
| fine grain | finger | finger-pointing syndrome |
| finite | Finite Automata | Finite Automaton |
| finite differencing | Finite Impulse Response | Finite State Automata |
| Finite State Automaton | Finite State Machine | finn |
| FIPS | FIR | firebottle |
| firefighting | Firefox | firehose syndrome |
| firewall | firewall code | firewall machine |
| FireWire | fireworks mode | Firmware |
| firmy | first class module | first fit |
| first generation | first generation computer | first generation language |
| first-in first-out | first normal form | first-order |
| first-order logic | First Party DMA | fish |
| FISH queue | FITNR | FITS |
| FIX | fix | fixed disk |
| fixed point | fixed-point | fixed point combinator |
| fixed-radio access | fixed-width | FIXME |
| fixpoint | fj | Fjolnir |
| fk | FL | F+L |
| flag | flag day | FLAIR |
| flaky | flamage | flame |
| flame bait | flame off | flame on |
| flamer | flame war | flaming |
| FLAP | flap | flapping router |
| flarp | Flash | flash |
| flash drive | Flash EPROM | Flash Erasable Programmable Read-Only Memory |
| Flash Lights Impressively | flash memory | Flash ROM |
| flat | flat address space | flat ASCII |
| flat file | flat file database | flatten |
| flat thunk | Flavors | Fleng |
| FLEX | Flex | Flex++ |
| Flex 2 | FLI | flib |
| FLIC | FLIP | Flip Chip Pin Grid Array |
| flip-flop | flippy | FLIP-SPUR |
| float | floater | floating-point |
| floating-point accelerator | Floating-Point SPECbaserate | Floating-Point SPECbaseratio |
| Floating-Point SPECrate | Floating-Point SPECratio | floating point underflow |
| Floating-Point Unit | floating underflow | F-Logic |
| flood | FLOP | Floppy |
| floppy | floppy disc | floppy disk |
| floppy disk drive | floppy drive | FLOPS |
| Flops | floptical | Flow |
| flow chart | flow control | flower key |
| FLOW-MATIC or FLOWMATIC | flow of control | FLPL |
| FLUB | Fluegelman, Andrew | flush |
| Flynn's taxonomy | fly page | Flyspeck 3 |
| flytrap | FM | fm |
| FMPL | FMQ | FMS |
| FMV | FNAL | FNC |
| fnord | FN tunnelling | fo |
| FOAD | FOAF | FOCAL |
| FOCL | FOCUS | focus group |
| FOD | FOIL | FoIP |
| FOIRL | fold case | folder |
| fold function | FOLDOC | followup |
| font | fontology | foo |
| foobar | foogol | FOOL |
| fool file | Fools' Lisp | Foonly |
| FOOP | foot-net | footprint |
| for | fora | FORC |
| Force | ForceOne | ForceTwo |
| foreground | Foreign eXchange Office | Foreign eXchange Subscriber |
| foreign key | Foresight | for free |
| fork | fork bomb | forked |
| for loop | FORM | FORMAC |
| FORMAL | formal argument | Formal Description Technique |
| formal methods | Formal Object Role Modeling Language | formal review |
| format | FORMAT-Fortran | Formatting Output Specification Instance |
| Formes | form factor | form feed |
| form function | FORML | forms |
| formula | Formula ALGOL | Forsythe |
| FORTH | for The Rest Of Them | for The Rest Of Us |
| Forth Modification Lab | Fortran | Fortran 66 |
| Fortran 77 | Fortran 90 | Fortran Automatic Symbol Translator |
| Fortran D | Fortran I | Fortran II |
| Fortran III | Fortran IV | Fortran-Linda |
| Fortran M | Fortran Matrix Abstraction Technique Fortran | Fortran-Plus |
| FORTRANSIT | Fortran V | Fortran VI |
| Fortrash | FORTRUNCIBLE | fortune cookie |
| forum | for values of | forward |
| forward analysis | forward chaining | forward compatibility |
| forward compatible | forward delta | forward engineering |
| Forward Error Correction | forwards compatibility | forwards compatible |
| FORWISS | For Your Information | FOSI |
| FOSIL | FOSS | fossil |
| foundation | FOundation for Research and Technology - Hellas | four-colour glossies |
| four colour map theorem | four colour theorem | Fourier transform |
| fourth generation computer | fourth generation language | fourth normal form |
| Fowler-Nordheim tunnelling | Fox | FoxBASE+ |
| FoxPRO | Fox Software | Fox Wiki |
| FP | FP2 | FPA |
| fpc | FPGA | FPLMTS |
| FPM | FP/M | FPM DRAM |
| fprintf | fps | FPU |
| FQDN | FQL | fr |
| FRA | fractal | fractal compression |
| fractal dimension | FRAD | fragile |
| fragment | fragmentation | FRAM |
| frame | frame buffer | Frame Check Sequence |
| frame grabber | FrameKit | FrameMaker |
| frame pointer | frame rate | Frame Relay |
| Frame Relay Access Device | frames per second | Frame Technology Corporation |
| framework | Framework 4 | framing specification |
| FRANK | Franz Lisp | Fraps |
| Fraunhofer Gesellschaft | FRED | fred |
| Fredette's Operating System Interface Language | frednet | free |
| FreeBSD | FreeHEP | Freenet |
| Free Objects for Crystallography | Free On-line Dictionary | free open-source software |
| FreePPP | freerexx | free software |
| Free Software Foundation | free variable | freeware |
| freeze | Frege, Gottlob | frequency division multiple access |
| frequency division multiplexing | Frequency-Hopping Spread Spectrum | Frequency Modulation |
| Frequency Shift Keying | frequently asked question | Fresco |
| Fresh | friction feed | fried |
| Friend | FRINGE | frink |
| friode | fritterware | FRL |
| FRMT-FTRN | frob | frobnicate |
| frobnitz | Frobozz Magic Programming Language | frogging |
| Frolic | front end | front-end processor |
| front side bus | frotzed | frowney |
| fry | FS | FSB |
| fsck | FSF | FSK |
| FSL | FSM | FSP |
| fsplit | FT | FTAM |
| FTP | FTP archive | FTP by mail |
| FTP server | FTP Software, Inc. | FTTP |
| FTW | FTX | FUBAR |
| FUD | fudge | fudge factor |
| Fudgets | FUDGIT | FUD wars |
| Fuel-can | Fugue | Fujitsu |
| full-custom | full-duplex | full-duplex Switched Ethernet |
| full laziness | full-motion video | full outer join |
| fully associative cache | Fully Automated Compiling Technique | fully lazy lambda lifting |
| fully qualified domain name | fum | Fun |
| function | functional | functional database |
| functional dependency | functionality | functional language |
| functional program | functional programming | functional programming language |
| functional requirements | functional specification | functional testing |
| functional unit | function application | function complete |
| Function Graph Language | function inlining | function key |
| Function Point Analysis | functor | funky |
| FUNLOG | FunnelWeb | funny money |
| furigana | furrfu | FUSE |
| FUSION | fusion | FutureBasic |
| future date testing | futz | fuzzball |
| fuzzy computing | fuzzy logic | fuzzy subset |
| fweep | FWIW | fx |
| FX-87 | FX-90 | FXO |
| FXS | FYA | FYI |
| FYI4 | G | G2 |
| G3 | G4 | GA |
| ga | Gabriel | gabriel |
| Gabriel, Richard | GADS | Gaelic |
| gag | GAIA | GAL |
| Galaxy | Galileo | Gambit |
| Game Boy | games | game tree |
| GAMMA | gamma correction | GAMS |
| gamut | GAN | GANDALF |
| gang bang | GAP | GAPLog |
| garbageabetical order | garbage collect | garbage collection |
| Garbage In, Garbage Out | Gargoyle | Garnet |
| GARP | garply | Gartner Group |
| gas | GASP | gas plasma display |
| GAT | GATE | gate |
| gated | Gates | gateway |
| Gateway 2000 | Gauss | Gaussian distribution |
| gawk | GB | Gb |
| gb | g-bell | GBIP |
| GBML | gbps | GC |
| GCAL | GCC | GCL |
| G-Code | GCOS | GCOS Macro Assembler Program |
| GCR | GCT | gd |
| GDA | GDB | GDBPSK |
| Gödel, Kurt | GDI | GDMO |
| GDPL | GE | ge |
| GE-645 | GEA | GEANT |
| GECOM | GECOS | Gedanken |
| gedanken | geef | geek |
| geek out | GEI | GE Information Services |
| GEM | gen | gender mender |
| Gene Amdahl | General Activities Simulation Program | General Aerodynamic Simulation Program |
| General Dynamics Canada Ltd | General Electric | General Electric Comprehensive Operating System |
| General Magic | General Packet Radio Service | General Protection Failure |
| General Protection Fault | General Public Licence | General Public License |
| General Public Virus | General Purpose Graphic Language | General Purpose Interface Bus |
| General Purpose Language | General Purpose Macro-generator | General Recursion Theorem |
| generate | generation | Generic Array Logic |
| Generic Expert System Tool | generic identifier | genericity |
| generic markup | generic programming | Generic Routing Encapsulation |
| Generic Security Service Application Programming Interface | generic thunk | generic type variable |
| Genesia | genetic algorithm | genetic algorithms |
| genetic programming | GEnie Services | Genken Programming Language |
| GENOVA | gensym | Gensym Corporation |
| Gensym Standard Interface | Gentleman's Portable Coroutine System | GEN-X |
| Geographical Information System | Geographic Information System | geometric mean |
| GEORGE | GEORGE 3 | George Boole |
| Georg Simon Ohm | GEOS | GEPURS |
| Gerald | Gerald Sussman | German |
| German National Research Center for Computer Science | GEST | Get a life! |
| Get a real computer! | get.com | getty |
| gf | GFDL | g file |
| GFLOPS | GFR | GFS |
| gh | GHC | ghetto code |
| ghost | Ghostscript | ghostview |
| GHz | GI | gi |
| Gibson, William | gid | GIF |
| GIF89 | GIF89a | GIFF |
| gig | giga- | gigabit |
| gigabits per second | gigabyte | gigaflop |
| gigaflops | GigaHertz | GIGO |
| gilley | gillion | Gilmore, John |
| GIM-1 | GIN | GINA |
| Ginger | GIP | GIPS |
| GIRL | GIS | Giuseppe Peano |
| GIYF | GKS | GKS-3D |
| GL | gl | Glammar |
| glark | Glasgow Haskell Compiler | GLASS |
| glass | glass box testing | glassfet |
| glass tty | GLB | glibc |
| Glish | Glisp | glitch |
| glob | global index | globalisation |
| Global Network Navigator | Global Positioning System | Global System for Mobile Communications |
| glork | GLOS | GLOW |
| GLS | GLU | glue |
| glue language | glyph | Glypnir |
| gm | GMAP | GMD |
| GMD Toolbox for Compiler Construction | GMT | gn |
| gnarly | Gnat | GNATS |
| GNN | GNOME | Gnome Computers |
| GNU | GNU archive site | GNU assembler |
| GNU awk | GNU BC | GNU C |
| GNU C Library | GNU DC | GNU E |
| GNU Emacs | GNU Free Documentation License | GNU General Public License |
| GNUMACS | GNU mirror site | GNU Network Object Model Environment |
| Gnuplot | GNU Privacy Guard | GNU Problem Report Management System |
| GNU public licence | GNUS | GNU sed |
| GNU Smalltalk | GNUstep | GNU style |
| GNU superoptimiser | Go | goal |
| goal seek | Go Back N | gobble |
| GObject Introspection | Godwin's Law | Godzillagram |
| Goedel | go-faster stripes | Gofer |
| Goffin | go flatline | GO-GO |
| go gold | GOL | golden |
| golf ball printer | GOM | gonk |
| gonkulator | GOOD | Good Thing |
| Google | googol | googolplex |
| gopher | Gopher client | Gopher object type |
| Gopherspace | gorets | gorilla arm |
| go root | gorp | GOSIP |
| Gosling, James | GOSMACS | Gosperism |
| GOSPL | gotcha | goto |
| Gottlob Frege | gov | governance |
| Government OSI Profile | go voice | GP |
| gp | GPF | GPIB |
| GPL | GPM | GPRS |
| GPS | GPSS | GPU |
| GPV | GPX | gq |
| gr | GRAAL | grabber pointer |
| Grace Hopper | GRAF | Graffiti |
| GRAIL | GRAIN | grain |
| GRAM | grammar | grammar analysis |
| grammatical inference | Grandfather, Father, Son | granularity |
| Grapes | Grapevine | graph |
| Graph Algorithm and Software Package | graph coloring | graph colouring |
| Graphic ALGOL | Graphical Kernel System | Graphical User Interface |
| Graphic Display Interface | Graphic Language | graphics |
| graphics accelerator | graphics adapter | graphics adaptor |
| graphics card | Graphics Interchange Format | Graphics Interface Format |
| Graphics Language Object System | graphic workstation | Graph-Oriented Object Database |
| graph plotter | graph reduction | graph rewriting system |
| GRAPPLE | GRAS | GRASP/Ada |
| GRASPIN | grault | Gray |
| graybar land | Gray code | gray-scale |
| GRE | greater than | greatest common divisor |
| greatest lower bound | Great Renaming | Great Runes |
| Great Worm | greek | greeking |
| Green | Green Book | Green Book CD-ROM |
| green bytes | green card | green lightning |
| green machine | green monitor | Green's Theorem |
| Greenwich Mean Time | green words | Greg Olson |
| Gregorian calendar | grep | grey-scale |
| Greystone Technologies | GRG | GRIB |
| grick | grilf | Grim File Reaper |
| GRIND | grind | grind crank |
| GRIP | gripenet | gritch |
| grix | groff | grok |
| gronk | gronked | group |
| Group 3 | Group 4 | Group Code Recording |
| group identifier | Group Separator | Group-Sweeping Scheduling |
| Groupware | Groupwise | grovel |
| grunge | gry | GS |
| gs | GSBL | GSI |
| GSL | GSM | GSPL |
| GSS | GSS-API | gt |
| gtg | GTK+ | GTL |
| GT/SQL | gu | guaranteed scheduling |
| guard | Guarded Horn Clauses | gubbish |
| guest book | GUI | GUIDE |
| Guide | Guide to Available Mathematical Software | guiltware |
| gun | gunch | Gunning Transceiver Logic |
| gunzip | Gupta Corporation | gurfle |
| guru | guru meditation | Guy Lewis Steele, Jr. |
| Guy Steele | GVL | gw |
| GW-Ada | GW-BASIC | gweep |
| GWHIS | GWM | gy |
| Gypsy | gz | gzip |
| h | H.261 | H.264 |
| H.323 | Habitat | hack |
| hackathon | hack attack | hacked off |
| hacked up | hacker | hacker ethic |
| hacker humour | hacking run | Hacking X for Y |
| Hackintosh | hackish | hackishness |
| hackitude | hack mode | hack on |
| hack together | hack up | hack value |
| ha ha only serious | hair | hairball |
| hairy | hairy ball | HAKMEM |
| hakspek | HAL | half-duplex |
| halftone | HALGOL | HALMAT |
| Hal/S | Halt and Catch Fire | halting problem |
| Hamilton | Hamiltonian cycle | Hamiltonian path |
| Hamiltonian problem | Hamiltonian tour | Hamilton's problem |
| hammer | Hamming code | Hamming distance |
| Hamming, Richard | hamster | Han character |
| HAND | hand cruft | Handel |
| hand hack | Hand-held Personal Computer | handle |
| handoff | handover | hand-roll |
| handshake | handshaking | handwave |
| hang | hanja | Hanoi |
| Han Unification | hanzi | happily |
| Happy | haptic interface | haptics |
| haque | hard boot | hard-coded |
| hardcopy | hard crash | hard disk |
| hard disk drive | hard drive | hard link |
| hard linking | hard sector | hardware |
| Hardware Abstraction Layer | hardware circular buffer | Hardware Description Language |
| hardware handshaking | hardware register | hardwarily |
| hard-wired | Harris Semiconductor Ltd. | Harvard architecture |
| Harvard Graphics | Harvard Mark II Machine | Harvest |
| Harvest C | hash | hash bucket |
| hash character | hash coding | hash collision |
| hash function | hashing | hash table |
| Haskell | Haskell B | Haskell Curry |
| Haskell User's Gofer System | HASL | HASP |
| has the X nature | hat | hate-driven development |
| Hayes | Hayes-compatible | Haze |
| HBOOK | hc | HC-900 |
| HCF | HCI | HCLP |
| HCPRVR | HCS | HD |
| HD6309 | HDA | HDC |
| HDD | HDF | HDFL |
| HDL | HDLC | HDM |
| HDMI | HDSL | HDTV |
| hdx | Head Disk Assembly | header |
| Head Normal Form | head normalisation theorem | heads down |
| head-strict | heap | heartbeat |
| heatseeker | heat sink | heat slug |
| heavy metal | heavyweight | heavy wizardry |
| Hebbian learning | heisenbug | Helen Keller mode |
| Helix | hello | hello packet |
| hello, sailor! | hello, world | HELP |
| Helvetica | henry | HENSA |
| HEP | HEPDB | HEPiX |
| HEPnet | HEPVM | HEQS |
| HERA | HERAKLIT | here document |
| Herman Hollerith | Hermes | Hesiod |
| heterogeneous | heterogeneous network | heterogenous |
| heuristic | heuristics testing | Hewlett-Packard |
| Hewlett-Packard Graphics Language | Hewlett-Packard Interface Bus | Hewlett Packard Multi Processing Executive |
| Hewlett Packard Precision Architecture | Hewlett-Packard Visual Engineering Environment | hex |
| hexadecimal | hexidecimal | hexit |
| HFC | HHCP | HHOJ |
| HHOK | HHOS | hi |
| HIBOL | HID | hidden flag |
| hierarchical database | Hierarchical Data Format | Hierarchical Design Methodology |
| hierarchical file system | Hierarchical Music Specification Language | hierarchical navigation |
| Hierarchical Object Oriented Design | hierarchical routing | hierarchy |
| Higgs Bugson | high bit | High bit-rate Digital Subscriber Line |
| high colour | High-Definition Multimedia Interface | high density |
| Higher Education National Software Archive | higher-order function | higher-order macro |
| High-level Data Link Control | high-level language | high memory area |
| high moby | High Performance Computing and Communications | High Performance File System |
| High Performance Fortran | High Performance Parallel Interface | High Performance Routing |
| High Performance Serial Bus | High Speed Circuit Switched Data | High Speed Connect |
| High-speed Net Connect | high speed serial interface | High Voltage Differential |
| HIGZ | hill climbing | HiLog |
| HIMEM | Hindenbug | hing |
| HINT | HiPAC | HIPPI |
| hiragana | hirsute | HISTORIAN |
| history | hit | Hitachi 6309 |
| Hitachi HD64180 | HITL | hit rate |
| hk | HL7 | HLISP |
| HLL | HLLAPI | hlp |
| hm | HMA | HMAC |
| hmake | HMD | HMP |
| HMSL | HMTL | hn |
| HNAP | HNAP1 | HNC |
| HO | Hoare powerdomain | Hobbit |
| hobbit | hog | HOL |
| HOL-88 | HOL-90 | hole |
| hole model | Hollerithabetical order | Hollerith, Herman |
| Hollywired | HOL-UNITY | holy wars |
| home | home box | home keys |
| home machine | Home Network Administration Protocol | home page |
| Home Phoneline Networking Alliance | HomePNA | home row keys |
| homogeneous | homogenous | homomorphism |
| honeypot | Honeywell | Honeywell-800 Business Compiler |
| HOOD | HOOK | hook |
| hop | Hope | Hope+ |
| Hope+C | Hopfield model | Hopfield network |
| horizontal application | horizontal encoding | horizontal loop combination |
| horizontal microcode | horizontal scan rate | horizontal tabulation |
| Horn clause | hose | hosed |
| HOS-STPL | host | host adapter |
| Host Command Facility | Host Control Interface | host-host layer |
| hosting | hostname | host number |
| hosts file | Hot Fix | HotJava |
| Hotline | Hotline Communications Ltd. | Hotline Connect |
| hotlink | hotlist | Hotmail |
| hot spot | Hot Standby Routing Protocol | Hot Swapable Routing Protocol |
| Hot Swappable Routing Protocol | hot swapping | HOTT |
| house wizard | Houston Automatic Spooling Program | Howe, Denis |
| how many nibbles are in a byte | how many nibbles in a byte | HP |
| hp2ps | HP9000 | H/PC |
| HPCC | HPcode | HPCode-Plus |
| HPF | HPFS | HP-GL |
| HP-GL/2 | HP-IB | HPL |
| HPLOT | HP-MPE | HP-PA |
| HPPI | HPR | HP-SUX |
| HP-UX | HP VEE | hqx |
| hr | href | hs |
| HSB | HSC | HSCSD |
| HSL-FX | HSM | HSRP |
| HSSI | HSV | HT |
| ht | HTH | HTLM |
| HTML | HTML+ | htmlcommentbox.com |
| HTTL | HTTP | HTTP/1.0 |
| HTTP cookie | HTTPd | HTTP proxy server |
| HTTP response status code | HTTPS | HTTP server |
| hu | hub | Hubnet |
| hubs | Hudson | hue |
| hue, saturation, brightness | hue, saturation, value | huff |
| Huffman | Huffman code | Huffman coding |
| Huffman encoding | Hugh Loebner | HUGO |
| HUGS | Human-Computer Interaction | Human-Computer Interface |
| Human Interface Device | Human Interface Technology Laboratory | humanist technology |
| humma | humor | humour |
| hung | Hungarian Notation | Hungry Programmers |
| hungry puppy | Hungry ViewKit | hungus |
| Hunt the Wumpus | Hurd | HVD |
| Hybrid | Hybrid Fiber Coax | hybrid multiprocessing |
| hybrid testing | hydra code | hydrofluorocarbon |
| HyperBase | Hyper-C | HyperCard |
| hypercube | Hyperion | hyperlink |
| Hyper-Man | hypermedia | HyperNeWS |
| Hyperscript | hyperspace | HyperSPARC |
| Hyperstrict | HyperTalk | hypertext |
| hypertext link | Hypertext Markup Language | Hypertext Transfer Protocol |
| HyperText Transmission Protocol, Secure | hypervisor | hyperware |
| hypotenuse | hysterical reasons | Hytelnet |
| HyTime | i18n | I2O |
| i386 | i486 | i487 |
| i860 | IA | IA32 |
| IAB | IAD | IAL |
| IAM | IANA | IANAL |
| IAP | I-APL | IAR |
| IAS | IAW | IAYSDAH |
| IBEX | IBM | IBM 1130 |
| IBM 1403 | IBM 1620 | IBM 1710 |
| IBM 2741 | IBM 3270 | IBM 360 |
| IBM 370 | IBM 370ESA | IBM 370XA |
| IBM 3720 | IBM390 | IBM 650 |
| IBM 700 series | IBM 701 | IBM 704 |
| IBM 7040 | IBM 705 | IBM 709 |
| IBM 7090 | IBM 7094 | IBM 801 |
| IBM compatible | IBM Customer Engineer | IBM discount |
| IBM PC | IBM PC AT | IBM PCjr |
| IBM PC XT | IBM System/36 | IBM Systems Engineer |
| IBM zSeries | Ibpag2 | Iburg |
| IC | ICA | ICAM |
| ICANN | I-CASE | ICBM address |
| ICE | icebreaker | ICES |
| ICETRAN | ICI | ICL |
| ICMP | ICMP Router Discovery Protocol | I-Comm |
| iCOMP | Icon | icon |
| Icon-Based Parser Generation System 2 | Iconicode | ICONIX Software Engineering, Inc. |
| IC-Prolog | IC Prolog II | ICQ |
| ICSI | ICT | ICW |
| ICWS | Id | id |
| I-D | ID10T | IDAMS |
| IDD | IDE | IDEA |
| IDEAL | ideal | Idealized CSP |
| Idealized Instruction Set | IDEF | IDEF0 |
| idempotent | identifier | ideogram |
| I didn't change anything! | idk | IDL |
| IDMS | IDMSX | Id Nouveau |
| IDOL | IDS/I | IDSN |
| id Software | IDSS | IE |
| ie | IEC | IEC 559 |
| IEEE | IEEE 1076 | IEEE 1394 |
| IEEE 488 | IEEE 754 | IEEE 802 |
| IEEE 802.1 | IEEE 802.2 | IEEE 802.3 |
| IEEE 802.3u | IEEE 802.3z | IEEE 802.4 |
| IEEE 802.5 | IEEE Computer Society | IEEE Floating Point Standard |
| IEEE Standard 1149.1 | IEF | IEN |
| IEPG | IESG | IETF |
| IF1 | IF2 | IFAC |
| IFC | ifdef out | IFDL |
| IFF | iff | IFIP |
| IFP | IFS | IFX |
| If you want X, you know where to find it. | IGC | IGES |
| IGL | IGMP | IGP |
| IGPL | IGS | IGU |
| IHS | IHV | IIcx |
| IIDMS/R | IIL | IINREN |
| IIOP | IIR | IIRC |
| IIS | IIT | IITF |
| IITRAN | il | ILBM |
| ILF | ILIAD | I-Link |
| ILISP | ill-behaved | ILLIAC |
| Illiac IV | Illinois Functional Programming | ILOC |
| Ilog Solver | iMac | image |
| image formats | image map | image processing |
| image recognition | imaging | Imago Europe plc |
| Imago On-line | imake | IMAO |
| IMAP | imc | IMD |
| IMHO | IML | immediate version |
| Imminent Death Of The Net Predicted! | IMNSHO | IMO |
| IMP | impact printer | impedance |
| imperative | imperative language | imperative programming |
| Imperial College of Science, Technology and Medicine | Imperial Software Technology | IMPlementation language |
| implication | implicit parallelism | implicit type conversion |
| implies | imply | import |
| imprecise probability | IMProved Mercury autocode | IMR |
| IMS | IMS 6100 | Imsai |
| IMS/Data Base | IMS/Data Communications | IMSE |
| IMTC | in | Ina Jo |
| InARP | in-band signaling | in-band signalling |
| inc | incantation | include |
| include war | inclusive | incomparable |
| incremental analysis | incremental backup | incremental constraint solver |
| Incremental Prototyping Technology for Embedded Realtime Systems | increment operator | indent |
| indentation | indent style | Independent Computing Architecture |
| Independent Logical File | Independent Verification and Validation | index |
| Index Data | IndexedDB | Indexed Sequential Access Method |
| index.htm | index.html | index register |
| indices | indirect address | indirect addressing |
| indirection | indirect jump | induction |
| inductive inference | inductive relation | Industrial Programming, Inc. |
| Industrial Robot Language | Industry Standard Architecture | inetd |
| inews | infant mortality | infeasible path |
| inference | inference engine | inference rule |
| infimum | infinite | Infinite Impulse Response |
| infinite loop | Infinite Monkey Theorem | infinite set |
| infinity | infix notation | infix syntax |
| inflate | INFN | Infobahn |
| Info BASIC | infobot | Informatics Corporation |
| information | Information Algebra | Information and Communication Technology |
| Information Appliance | Information Builders | Information Engineering Facility |
| information highway | Information Infrastructure Task Force | Information Innovation |
| information island | Information Management | Information Management System |
| information overload | Information Processing Language | Information Resource Management |
| information superhighway | Information Systems Factory | information technology |
| information technology governance | Information Technology Infrastructure Library | Informix |
| InfoSeek | InfoStreet, Inc. | infotainment |
| InfoWord Office | infrared | Infrared Data Association |
| infrastructure | Inglish | INGRES |
| inheritance | initgame | initialise |
| Initial Microprogram Load | Initial Operational Test and Evaluation | Initial Program Load |
| Initial Program Loader | initiator | injection |
| inkjet printer | ink printer | inline |
| inline element | inline image | INMOS transputer |
| inner class | inner join | inner product |
| InnovAda | inode | in-order traversal |
| inout | IN point | Inprise Corporation |
| Input | input | input device |
| input/output | input/output redirection | inquiry/response system |
| INRIA | insanely great | insertion sort |
| INSIGHT | Insignia Solutions, Inc. | inspection |
| installable file system | installed user base | installer |
| instance | instance variable | instantiate |
| instantiation | Institute for Global Communications | Institute of Electrical and Electronics Engineers, Inc. |
| Institut National de Recherche en Informatique et Automatique | instruction | Instruction Address Register |
| instructional technology | instruction mnemonic | instruction prefetch |
| instruction register | instruction scheduling | instruction set |
| instruction set architecture | Instruction Set Processor | instrument |
| int | INTCODE | integer |
| Integer SPECbaserate | Integer SPECbaseratio | Integer SPECrate |
| Integer SPECratio | integrated circuit | Integrated Database Management System |
| Integrated Development Environment | Integrated Drive Electronics | Integrated Information Technology |
| Integrated Modelling Support Environment | Integrated Project Support Environment | Integrated Services Digital Network |
| Integrated Systems Architecture | Integrated Systems Laboratory | integration |
| integration testing | integrity | integrity constraint |
| Intel | Intel 4004 | Intel 4040 |
| Intel 486 | Intel 486DX | Intel 486SX |
| Intel 487SX | Intel 8008 | Intel 80186 |
| Intel 80188 | Intel 80286 | Intel 80386 |
| Intel 80386DX | Intel 80386SX | Intel 8048 |
| Intel 80486 | Intel 8051 | Intel 8080 |
| Intel 8085 | Intel 8086 | Intel 8088 |
| Intel 80x86 | Intel 8751 | Intel Comparative Microprocessor Performance index |
| Intel Corporation | IntelDX4 | Intel i960 |
| INTELLECT | intellectual property | intelligent backtracking |
| intelligent database | Intelligent Input/Output | Intelligent I/O |
| intelligent key | intelligent terminal | IntelliMouse |
| Intel Literature Sales | Intelsat | Intel x86 |
| intensional | Intent to Package | INTERACTIVE |
| interactive | Interactive and Batch EXecutive | Interactive CourseWare |
| Interactive Data analysis Language | Interactive Data Entry/Access | Interactive Data Language |
| Interactive Development Environment | Interactive Development Environments | Interactive Software Engineering |
| Interactive System Productivity Facility | Interactive Voice Response | Interagency Interim National Research and Education Network |
| InterBase | INTERCAL | Interchange File Format |
| INTERCOM | Interdata | Interest Group in Pure and Applied Logics |
| interesting | inter-exchange carrier | interface |
| interface analysis | Interface Architect | Interface Definition Language |
| Interface Description Language | Interface Message Processor | Interior Gateway Protocol |
| interlace | interlaced image | interlacing |
| Interlan | Interleaf | interleave |
| interleaving | INTERLINK | Interlisp |
| Interlisp-10 | Interlisp-D | Intermedia |
| Intermedia Interchange Format | intermediate code | Intermediate Distribution Frame |
| Intermediate Programming Language | Intermediate System | Intermediate System-Intermediate System |
| intermercial | Intermetrics, Inc. | intermodulation distortion |
| internal field separators | Internal Translator | International Algebraic Language |
| International Atomic Time | International Business Machines | International Computers Limited plc |
| International Core War Society | International Data Encryption Algorithm | International Electrotechnical Commission |
| International Federation for Information Processing | International Function Point Users Group | internationalisation |
| internationalization | International Multimedia Teleconferencing Consortium | International Olympiad in Informatics |
| International Organisation for Standardisation | International Organization for Standardization | International Phonetic Alphabet |
| International Programmable Airline Reservation System | International Smalltalk Association | International Standard |
| International Telecommunications Union | International Traffic in Arms Regulation | Internaut |
| Internet | Internet Access Provider | Internet Adapter |
| Internet address | internet address | Internet Architecture Board |
| Internet Assigned Numbers Authority | Internet backbone | Internet Chess Server |
| Internet Control Message Protocol | Internet Corporation for Assigned Names and Numbers | Internet-Draft |
| Internet Engineering and Planning Group | Internet Engineering Steering Group | Internet Engineering Task Force |
| Internet Experiment Note | Internet Explorer | Internet Express |
| Internet Foundation Classes | Internet Go Server | Internet Group Management Protocol |
| Internet Information Server | Internet Inter-ORB Protocol | Internet Message Access Protocol |
| Internet Monthly Report | Internet Network Information Center | internet number |
| Internet Open Trading Protocol | Internet Protocol | Internet Protocol Control Protocol |
| Internet Protocol version 4 | Internet Protocol version 6 | Internet provider |
| Internet Public Library | Internet Registry | Internet Relay Chat |
| Internet Research Steering Group | Internet Research Task Force | Internet Security Association and Key Management Protocol |
| Internet Server Application Programming Interface | Internet Service Provider | Internet Society |
| Internet Telephony | Internet Telephony Service Providers | internetworking |
| Internetwork Packet eXchange | Internet Worm | Internex On-Line |
| InterNIC | interoperability | interoperable database |
| inter-packet gap | interpolation | Interpress |
| interpreted | interpreter | Interpretive Menu Processor |
| Inter-process Communication | interrupt | interrupt handler |
| interrupt list | interrupt priority level | interrupt request |
| interrupts | Intersil 6100 | Intersil 6120 |
| interstitial | Intertec | interupt |
| interval | InterViews | interworking |
| intranet | Intrinsics | introspection |
| introspection annotation | Intrusion Countermeasure Electronics | Intrusive Testing |
| Intuition | intuitionism | intuitionistic logic |
| intuitionistic probability | intuitionist logic | invariant |
| inverse | Inverse Address Resolution Protocol | inverse comment convention |
| inverted index | invoking a method | InWorld VR |
| IO | io | I/O |
| IOI | Iomega Corporation | I-OOA |
| I/O redirection | IOS | Iota |
| IOT&E | IOW | IP |
| IPA | iPad | IP address |
| IPARS | I-Pay | IPC |
| ipconfig | IPCP | IPE |
| Iperf | IPL | IP next generation |
| IPng | IP number | IPoAC |
| IP over Avian Carriers | IPS | IPSE |
| IPsec | IPT | IP Telephony |
| IPv4 | IPv6 | IPX |
| IPXCP | IQ | iq |
| IQL | IR | ir |
| IrBUS | IRC | ircop |
| IRC penis war | IrDA | IrDA-C |
| IrDA Control | IrDA Data | IRDATA |
| IRDP | IRDS | IRET |
| IRIS | Iris | IRISA |
| IRIS Explorer | IRIX | IRL |
| IRM | iron | Iron Age |
| iron box | Ironman | ironmonger |
| IRQ | irrational number | irrefutable |
| IRSG | IRTF | IRUS |
| Irvine Dataflow | Irvine Research Unit in Software | IS |
| is | IS-11172 | IS-13818 |
| ISA | Isabelle | Isabelle-92 |
| Isabelle-93 | ISA bus | ISAKMP |
| ISAM | ISAPI | ISAPI filter |
| ISBL | ISDE | ISDN |
| ISE | ISEE | I see no X here. |
| ISETL | ISF | ISINDEX |
| ISIS | IS-IS | ISL |
| ISLisp | ISMAP | ISO |
| ISO 10646 | ISO 3166 | ISO 639-1 |
| ISO 639-2 | ISO 8072 | ISO 8073 |
| ISO 8208 | ISO 8326 | ISO 8327 |
| ISO 8485 | ISO 8613 | ISO 8649 |
| ISO 8650 | ISO 8805 | ISO 8807 |
| ISO 8822 | ISO 8823 | ISO 8825 |
| ISO 8859 | ISO 8859-1 | ISO 8879 |
| ISO 9000 | ISO 9072 | ISO 9660 |
| ISO 9735 | ISOC | ISO C |
| isochronous | isochronous transfer | ISODE |
| ISO Development Environment | ISO/IEC 10646-1 | ISO/IEC 26300 |
| isolated | ISO Latin 1 | isometric joystick |
| isometry | isomorphic | isomorphism |
| isomorphism class | ISO Pascal | ISO seven layer model |
| ISP | ISPBX | ISPF |
| ISPL | ISPS | IST |
| ISTAR | ISTM | ISV |
| ISWIM | IT | it |
| ITAR | Iterated Function System | iteration |
| iterative deepening | iterator | Iternet |
| IT governance | ITHACA | ITIL |
| ITP | ITS | it's a feature |
| ITSP | ITU | ITU-T |
| ITU-T X.680 | ITU X.209 | Ivan |
| Ivan Sutherland | Iverson's Language | IVR |
| ivs | IVTRAN | IV&V |
| IVY | IWay | IWBNI |
| IXC | IXI Limited | IXO |
| IYFEG | J | J2EE |
| J2ME | J2SE | J3 |
| J73 | jabber | JACAL |
| jaccl | jack in | Jack Kilby |
| Jackson method | Jacquard, Joseph-Marie | Jacquard loom |
| JAD | JADE | Jade |
| jadeTeX | JAffer's Canonical ALgebra | jaggies |
| JaM | jam | James Clark |
| James' DSSSL Engine | James Gosling | James H. Clark |
| JAM Programming Language | JANET | JANET IP Service |
| Janus | japh | jar |
| jargon | Jargon File | Java |
| Java 2 | Java 2 Platform | Java 2 Platform, Enterprise Edition |
| Java 2 Platform, Micro Edition | Java 2 Platform, Standard Edition | Java 2 SDK |
| Java 2 Software Development Kit | Java archive | JavaBeans |
| Java Community Process | Java Database Connectivity | Java Development Kit |
| Java Message Service | Java Native Interface | Java Open Language Toolkit |
| Java Remote Method Protocol | Java Run-Time Environment | JavaScript |
| JavaScript Object Notation | Java servelet | JavaServer Faces |
| JavaServer Pages | Java servlet | Java Servlet Development Kit |
| Java Virtual Machine | Java VM | JAZ |
| Jaz | Jaz Drive | JAZELLE |
| JBIG | JBOD | JBOPS |
| jc | JCL | JCOOL |
| JCP | JCS-13 | JDBC |
| JDK | JEAN | Jean E. Sammet |
| Jean-Maurice-Émile Baudot | JEDR | Jef Raskin |
| Jenga Code | Jenkins | Jerry Sussman |
| JES | JES2 | JES3 |
| JFCL | JFDI | JFET |
| JFGI | JFIF | jiffy |
| Jim Clark | Jini | JIPS |
| JIT | jitter | JK flip-flop |
| jm | J.M.E. Baudot | JMHO |
| JMS | JNI | JNT Association |
| jo | job | Job Control Language |
| Job Entry System | Jobs | job security |
| jock | joe | joe code |
| John Atanasoff | John Gilmore | John Mauchly |
| John McCarthy | Johnniac | JOHNNIAC Open Shop System |
| John Ousterhout | John Tukey | John Vincent Atanasoff |
| John von Neumann | join | Joint Academic NETwork |
| Joint Bi-level Image Experts Group | Joint Photographic Experts Group | Joint Technical Committee |
| Joint Test Action Group | Joliet | jolix |
| JOLT | Jonathan's Own Version Of Emacs | Jon Postel |
| JOOP | Joseph-Marie Jacquard | Josephson Junction |
| JOSS | Jossle | journal |
| journalling | jove | JOVIAL |
| Joy | Joyce | joystick |
| Joy, William | jp | JPEG |
| JPEG-2000 | JPEG File Interchange Format | jpg |
| JPL | JPLDIS | J. Presper Eckert |
| J. Random | J. Random Hacker | JRE |
| JRL | JRMP | JS |
| JSA | JSDK | JSF |
| JSON | JSP | JSTL |
| JTAG | JTB | JTC |
| JTC1/SC24 | JTS | juggling eggs |
| Jughead | juice jacking | jukebox |
| jump | jumper | jump off into never-never land |
| jump trace buffer | Junction FET | Junction Field Effect Transistor |
| Juno | jupiter | Just a Bunch Of Disks |
| just-in-time | JVM | Jym |
| K | K5 | K56flex |
| K6 | K7 | KA9Q |
| KADS | kahuna | Kaleidoscope |
| Kali | kamikaze packet | Kamin's interpreters |
| kana | kangaroo code | kanji |
| KAOS | KAP | Karel |
| katakana | Katmai New Instructions | KB |
| KBMS | kbps | KBS |
| KC-85/1 | KC85/2 | KC85/3 |
| KC85/4 | KCL | ke |
| KEE | keep-alive | Keldysh Institute of Applied Mathematics |
| ken | Kent Applicative Operating System | Ken Thompson |
| Kent Recursive Calculator | Kerberos | Kermit |
| kern | kernal | kernel |
| Kernel Parlog | kernel style | Kernel User Interface Package |
| kerning | Kevo | key |
| keyboard | Keyboard Commando | keyboard plaque |
| Keyboard Send Receive | Keyboard Video Mouse | Keyed-Hashing Message Authentication |
| Keyed Sequenced Data Set | key escrow | key field |
| key frame | keylogger | KeyNote Software |
| keypad | keypal | KeySpell |
| keyword | keyword in context | KFX |
| kg | kgbvax | kh |
| Khornerstone | Khwarizmi | ki |
| kibibyte | KIBO | kiboze |
| kick | kicking dead whales down the beach | Kid |
| KIDASA Software | killer micro | killer poke |
| kill file | kilo- | kilobaud |
| kilobit | kilobits per second | kilobyte |
| kiloflops | kiosk | KIPS |
| KIS | KISS | KISS Principle |
| kit | KL0 | KL1 |
| Klamath | KLB | Kleene closure |
| Kleene star | Kleene, Stephen Cole | Klerer-May System |
| KLOC | klone | KL-ONE |
| kludge | kluge | kluge around |
| km | KMODEL | KMS |
| kn | knapsack problem | KNI |
| Knights of the Lambda-Calculus | knowbot | Knowbot Information Service |
| knowledge | Knowledge Analysis and Design System | knowledge base |
| knowledge-based system | knowledge level | Knowledge Management System |
| Knowledge Query and Manipulation Language | knowledge representation | Knowledge Sharing Effort |
| Knowledge Systems Laboratory | Known Lazy Bastard | Knuth |
| Kodak | Kohonen | KOMPILER |
| Konrad Zuse | Korf, Richard | Korn Shell |
| kp | KQML | KR |
| kr | K&R | KRC |
| K&R C | kremvax | KRL |
| KRS | K&R style | KRYPTON |
| ksh | KSL | KSR |
| KTH | kthx | KUIP |
| Kungliga Tekniska Högskolan | KUTGW | Kvatro Telecom AS |
| Kvikkalkul | KVM | kw |
| KWIC | ky | Kyoto Common Lisp |
| kyrka | kz | L0 |
| L0pht | l10n | L1 cache |
| L2 cache | L2CAP | L2TP |
| L6 | la | label |
| labeled fields | label edge router | Label Forwarding Information Base |
| label switched path | label switching | Label Switching Router |
| Lab for Computer Science | Laboratoire lorrain de recherche en informatique et ses applications | Laboratory INstrument Computer |
| Laboratory Virtual Instrument Engineering Workbench | LaborNet | Labtech Notebook |
| LabVIEW | Lace | lace card |
| ladder logic | LADY | lag |
| Lakota | LALR | lalr.ss |
| Lambada-Calculus | LAMBDA | lambda abstraction |
| lambda-calculus | lambda expression | lambda lifting |
| LambdaMOO | Lambda Prolog | lamer |
| LAMINA | lamp-post error | LAN |
| LAN administrator | LANCE | language |
| language-based editor | language code | Language for Communicating Systems |
| Language for the On-Line Investigation and Transformation of Abstractions | Language H | language lawyer |
| Language Of Temporal Ordering Specification | Language Sensitive Editor | language-sensitive editor |
| languages of choice | Laning and Zierler | Lan Kanal Adapter |
| LANL | Lan Manager | LANtastic |
| LAP | LAP4 | LAPB |
| LAPD | LAPM | LAPSE |
| laptop | laptop computer | LaQuey |
| Larch | Larch/C++ | LARCH/CLU |
| Large Installation Systems Administration | Larry Wall | LART |
| larval stage | lase | laser |
| laser printer | Lasherism | last call optimisation |
| last-in first-out | LAT | latch |
| latency | LaTeX | Latin 1 |
| lattice | LAU | laundromat |
| LAURE | LAVA | law |
| LAWN | Lawrence Livermore Labs | Lawrence Livermore National Laboratory |
| LAX | layer | layer 1 |
| layer 2 | layer 3 | layer 4 |
| layer 5 | layer 6 | layer 7 |
| Layer Two Tunneling Protocol | laziness | lazy evaluation |
| lazy list | Lazy SML | lazy sml2c |
| Lazy Standard ML | lb | LBA |
| LBE | LBL | LBX |
| lc | LCC | lcc |
| LCD | LCF | LCL |
| lclint | LCP | LCS |
| ld | LDAP | LDB |
| LDL | LDL1 | LDP |
| LDT | LE/1 | leading |
| LEAF | leaf | Leaf Distribution Limited |
| leaf site | League for Programming Freedom | leak |
| leaky heap | Lean | LEAP |
| leapfrog attack | leap second | learning curve |
| leased line | least fixed point | least recently used |
| least significant bit | least upper bound | leaves |
| LEC | LECOM | LED |
| LEDA | Leda | LED page printer |
| LED printer | leech | leet |
| left arrow | left brace | left bracket |
| left join | left outer join | left parenthesis |
| LeFun | legacy | legacy code |
| legacy software | legacy system | legal |
| legalese | LEGOL | Le-Lisp |
| lemma | Lempel-Ziv compression | Lempel-Ziv Welch compression |
| Lenat, Doug | lenient evaluation | LEO |
| Leo | LER | LERP |
| less than | LessTif | let floating |
| letterbomb | level 1 cache | level 2 cache |
| LEVEL5 OBJECT | level one cache | level-sensitive scan design |
| level two cache | Lex | lexeme |
| lexer | lexical analyser | lexical analysis |
| lexical scope | lexical scoping | lexiphage |
| LF | LFIB | LG |
| LGDF | LGEN | LGN |
| lha | LHARC | lhs |
| li | Liana | Liar |
| liar paradox | lib | libg++ |
| library | Library of Efficient Data types and Algorithms | librery |
| LIDO | LiE | LIF |
| life | life-cycle | LIFIA |
| LIFO | lifted domain | LIGHT |
| light client | light-emitting diode | light-emitting resistor |
| light pen | light pipe | light-weight |
| Lightweight Directory Access Protocol | light-weight process | like kicking dead whales down the beach |
| like nailing jelly to a tree | like this | Lila |
| Lilith | LILLIAC IV | lilo |
| Lily | LIMDEP | LIM EMS |
| LIMP | Linc | Lincoln Reckoner |
| LINCtape | Linda | LindaLISP |
| line | line 666 | linear address space |
| linear argument | linear assignment | linear function |
| Linear Graph Notation | linear logic | linear map |
| linear programming | linear space | linear topology |
| linear transformation | linear type | line conditioning |
| line eater | line editor | line feed |
| line noise | line printer | line probing |
| lines of code | lines per minute | line starve |
| Lingo | LINGOL | link |
| Link Access Procedure on the D channel | Link Access Protocol Balanced | Link Access Protocol for Modems |
| linkage editor | Link Control Protocol | link-dead |
| link editor | linked list | linker |
| link farm | link loader | link rot |
| links | Link State Routing Protocol | LINPACK |
| lint | Linux | Linux Documentation Project |
| Linux Loader | Linux Network Administrators' Guide | Linux User Group |
| lion food | Lions Book | LIPL |
| liquid crystal display | LIS | LISA |
| Liskov, Barbara | Liskov substitution principle | Lisp |
| LISP 1 | LISP 1.5 | LISP 2 |
| LISP70 | LISP A | LISP Extended Algebraic Facility |
| Lispkit | Lispkit Lisp | Lisp-Linda |
| Lisp Machine | LISP Machine LISP | Lisp Object-Oriented Programming System |
| LISP, Objects, and Symbolic Programming | Lisptalk | LispView |
| list | list comprehension | List Enhanced |
| listless | Listproc | lists |
| Listserv | Liszt | lite |
| literal | literate programming | literature |
| LITHE | lithium lick | LitProg |
| LITTLE | little-endian | Little Smalltalk |
| live data | Live Free Or Die! | livelock |
| LiveScript | liveware | lk |
| LKA | LL | LLC |
| LLGen | LLM3 | LLNL |
| LLP | LM3 | LMAO |
| LMDS | lmgtfy.com | LML |
| LM-Prolog | LMTP | LNF |
| LO | L&O | load |
| load balancing | load-bearing printf | lobotomy |
| LOC | local area network | Local Area Terminal |
| local bus | locale | local echo |
| local exchange carrier | localisation | localised |
| locality | local loop | local loopback addresses |
| Local Mail Transfer Protocol | Local Multipoint Distribution System | locals |
| Local Shared Resources | LocalTalk | local variable |
| location | Loch Ness Monster Bug | locked and loaded |
| locked up | lock-in | Locus |
| Loebner Prize | log | logarithmus dualis |
| LogC | logic | logical |
| logical address | Logical Block Addressing | logical complement |
| Logical Interchange Format | Logical Link Control | Logical Link Control and Adaptation Protocol |
| logical relation | logical shift | logical shift left |
| logical shift right | Logical Unit | Logical Unit 6.2 |
| Logical Unit Number | logic bomb | Logic Design Language |
| logic emulator | Logic for Computable Functions | logic gate |
| logic programming | Logic Replacement Technology | logic variable |
| LOGIN | log in | LOGISCOPE |
| Loglan | Loglan'82 | Loglan-88 |
| LOGLISP | LOGO | log off |
| LOGOL | logon | log out |
| Lojban | LOL | LOLITA |
| Lolli | LOM | longitudinal parity |
| Longitudinal Redundancy Check | LOOK | Look Ahead Left-to-right parse, Rightmost-derivation |
| Look ahead LR | look and feel | Looking Glass |
| LOOKS | loop | loop-and-a-half |
| loop combination | loop fusion | LOOPN |
| LOOPS | loop through | loose bytes |
| LOP | lord high fixer | Lore |
| Lorem ipsum | Lorenz attractor | LORIA |
| lose | loser | losing |
| loss | lossage | lossless |
| lossless audio compression | Lossless Predictive Audio Compression | lossy |
| lossy audio compression | lost in the noise | lost in the underflow |
| LOTIS | LOTOS | lots of MIPS but no I/O |
| Lotus 1-2-3 | Lotus Development Corporation | Lotus Notes |
| Lotus Notes Formula Language | LotusScript | loudspeaker |
| Lout | love | low-bandwidth |
| Low Bandwidth X | low earth orbit | Lower Layer Protocol |
| lower set | Low Insertion Force | LOWL |
| low-level language | low pass filter | Low Voltage Differential |
| LPAC | LPC | LPF |
| LPG | LPI | LPL |
| lpm | LP MUD | lpr |
| LPS | lp spooler | LPT |
| lr | LRC | LRLTRAN |
| LRU | ls | LSA |
| LSB | LSE | LSL |
| LSML | L-Soft | LSP |
| LSR | LSSD | LSYD |
| lt | LT-2 | LTL |
| LTPS | LTR | LTR3 |
| lu | LU6.2 | lub |
| Lubarsky's Law of Cybernetic Entomology | Lucent Technologies | LUCID |
| Lucid Emacs | Lucinda | Lucy |
| LUG | luminance | lump uncurrying |
| LUN | lunatic fringe | Lund Simula |
| Lund Software House AB | lurk | lurker |
| lurking | luser | Luser Attitude Re-adjustment Tool |
| LUSTRE | lv | lvalue |
| LVD | LWP | ly |
| LYaPAS | Lycos | lylafklc |
| lynix | LYNX | Lynx |
| LynxOS | Lynx Real-Time Systems | LYRIC |
| LZ77 compression | LZ78 compression | LZ compression |
| lzexe | lzh | LZH compression |
| LZW compression | M | m2 |
| M2toM3 | M3 | m4 |
| M5 | ma | MAC |
| Mac | Mac-1 | MAC-360 |
| MACA | MAC address | MACAnalyst |
| Macaulay | MacBinary | MACDesigner |
| macdink | MACE | Mach |
| Machiavelli | machinable | machine |
| machine code | machine cycle | MAchine INdependent SAIL |
| machine instruction | machine language | machine learning |
| Mach Interface Generator | machoflops | Mac II |
| Mac IIcx | Macintosh | Macintosh Common Lisp |
| Macintosh file system | Macintosh II | Macintosh IIcx |
| Macintosh Operating System | Macintosh user interface | Macintoy |
| Macintrash | MACL | MacLisp |
| MacMinix | Mac OS | Mac OS X |
| Mac Playmate | MacPPP | MACRO |
| macro | macro- | macrology |
| Macromedia | macro preprocessor | Macro SAP |
| macrotape | MACSYMA | MacTCP |
| MacX | MAD | Mad/1 |
| Madaline | MADCAP | MADTRAN |
| maggotbox | MAGIC | magic |
| magic bullet | magic cookie | magic number |
| Magic Paper | magic smoke | Magic Switch Story |
| Magma | Magma2 | MagmaLISP |
| magnetic disk | Magnetic Ink Character Recognition | magnetic stripe |
| magnetic tape | magnetic tape drive | magneto-optical disk |
| magneto-optical drive | magnetostrictive delay line | MAGNUM |
| Magritte | mail | Mail Application Programming Interface |
| mail bomb | mailbox | mail bridge |
| mail exchanger | Mail Exchange Record | mail exploder |
| mail filter | mail gateway | mail hub |
| mailing list | mail merge | mail path |
| mail server | Mail Transfer Agent | Mail Transport Agent |
| mail user agent | Mail Users' Shell | main |
| MAINBOL | Main Distribution Frame | mainframe |
| mainframe programmer/analyst | main loop | main memory |
| MAINSAIL | main store | maintainer |
| maintainer script | maintenance | Maisie |
| major delivery | Majordomo | major release |
| Make | Makedoc | makefile |
| Maker Interchange Format | MAL | Malamud |
| MALI | mall | malloc |
| malware | malware as a service | MAN |
| man | managed code | management |
| Management Information Base | Management Information System | manager/html |
| Manager of Business Applications | Manchester Autocode | Manchester encoding |
| Mandala | Mandelbrot, Benoit | Mandelbrot set |
| mandelbug | Mandy Rice-Davis Applies | manged |
| mangle | mangler | mango |
| MANIAC | man-in-the-middle attack | man page |
| MANTIS | mantissa | manual testing |
| Manufacturer Resource Planning | Manufacturers Automation Protocol | Manufacturing Automation Protocol |
| manularity | Many Integrated Core Architecture | MAO |
| MAP | map | MAPI |
| Maple | mapping | marbles |
| Marc Andreessen | Margaret Hamilton | marginal |
| Marginal Hacks | Maril | marketroid |
| Mark I | Markov | Markov chain |
| Markov model | Markov process | Markowitz |
| mark-sweep garbage collection | markup | Marlais |
| Mars | Marseille Prolog | marshaling |
| marshalling | MARSYAS | Martian |
| Martin Marietta Laboratories Moorestown | MARVIN | Mary |
| MAS | MASCOT | Mask Read-Only Memory |
| MASM | MasPar Unity | masquerading |
| Massachusetts Institute of Technology | massage | Massey Hope |
| Massively Multiplayer Online Game | Massively Multiplayer Online Role-Playing Game | master |
| master boot record | Matchmaker | Material Requirements Planning |
| Mathcad | Mathematica | Mathematical Analysis without Programming |
| Mathematical Analyzer, Numerical Integrator and Computer | Mathematics in Recognizable Form Automatically Compiled | MathJax |
| MATHLAB | MATH-MATIC or MATHMATIC | math-out |
| MathWorks | MATLAB | Matrix |
| Matrix Compiler | MATRIX MATH | Matrix Math eXtensions |
| MAU | Mauchly, John W. | mawk |
| maximal free expression | maximin | MAXIMOP |
| maximum Maytag mode | maximum seek time | maximum segment size |
| Maximum Transmission Unit | Maxis Software | MB |
| MBASIC | Mbogo, Dr. Fred | MBONE |
| MBps | mbps | MBS |
| MC | mc | MC68000 |
| MC68010 | MC68020 | MC68030 |
| MC68040 | MC6809 | MCA |
| MCAD | MCC | McCulloch-Pitts neuron |
| MCDBA | MCDST | McG360 |
| MCGA | MCI | MCI Mail |
| MCL | M-Code | MCP |
| MCP-1600 | MCPD | MCS |
| MCSA | MCSD | MCSE |
| mcvax | mcvert | MD |
| md | MD5 | MDA |
| MDAC | MDCT | MDF |
| MDI | MDL | Mean Time Between Failures |
| Mean Time Between Faults | Mean Time To Recovery | measure |
| measurement | meatspace | meatware |
| media | Media Access Control | Media Access Unit |
| Media Converter | Media Gateway Control Protocol | Medium Access Control |
| meeces | Meet | meg |
| mega- | megabits per second | megabyte |
| megabytes per second | megaflop | megaflops |
| MegaHertz | megapenny | MEGO |
| Mei | Mel | MELD |
| MELDC | Melinda | Mel Kaye |
| Mellor | meltdown | Melvin Conway |
| member function | membership function | meme |
| meme plague | memetic algorithm | memetics |
| Memex | memo function | memoisation |
| memoised function | memoization | memoized function |
| memory | memory address space | memory dump |
| memory farts | memory leak | memory location |
| memory management | Memory Management Unit | memory mapped I/O |
| memory protection | memory smash | Memory Type Range Registers |
| MEMS | Mentat | MENTOR |
| menu | menu bar | menuitis |
| MENYMA/S | Mercury Autocode | mercury delay line |
| MERISE | Merlin | MEROON |
| Mesa | mesh | MESI protocol |
| message | message board | Message Digest 5 |
| message digest function | Message Handling System | message passing |
| Message Passing Interface | message switching | Message Transfer Agent |
| Message Transport Agent | Messaging Application Programming Interface | Messaging Applications Programming Interface |
| mess-dos | META | meta |
| META 5 | meta bit | MetaCard |
| Meta-CASE tool | metaclass | Meta Class System |
| Meta-Crystal | metadata | Metadata Information Partners |
| META element | metafile | METAFONT |
| metaheuristic | Meta-II | metainformation |
| Meta-IV | METAL | metalanguage |
| Metal Oxide Semiconductor | Metal Oxide Semiconductor Field Effect Transistor | metaphone |
| metaprogram | metasyntactic variable | metasyntax |
| META tag | Meta-Vlisp | Met-English |
| METEOR | meter | method |
| method invocation | methodology | Methods |
| me too | metre | metric |
| metric space | Metropolitan Area Network | M-expression LISP |
| MFC | MFE | MFLOPS |
| MFM | MFTL | mg |
| MGCP | mh | MHDL |
| MHEG | MHS | MHz |
| MIB | MIB Variable | MIC |
| Mic-1 | Mic-2 | MICE |
| mice | Michigan Algorithm Decoder | mickey |
| mickey mouse program | MICR | micro |
| micro- | microarray | Micro Assembly Language |
| microcentury | Micro Channel Architecture | microchip art |
| microcode | Microcom Networking Protocol | microcomputer |
| microcontroller | MicroDroid | microelectromechanical system |
| Microelectronics and Computer Technology Corporation | MicroEmacs | microfloppies |
| microfortnight | MicroGnuEmacs | Micro Instrumentation and Telemetry Systems |
| Micro Interpreter for Knowledge Engineering | microkernel | microLenat |
| microlog | micrometre | Micro ML |
| Micron | micron | Micron Electronics, Inc. |
| Micronetics Standard MUMPS | Micro$oft | microperation |
| microphone | microPLANNER | microprocesor |
| microprocessor | Microprocessor without Interlocked Pipeline Stages | microprogramming |
| microReid | MICRO SAINT | microsecond |
| Microserf | Microslop | Microsloth Windows |
| Microsoft | Microsoft Access | Microsoft Basic |
| Microsoft Certified Application Developer | Microsoft Certified Database Administrator | Microsoft Certified Desktop Support Technician |
| Microsoft Certified Professional Developer | Microsoft Certified Solution Developer | Microsoft Certified System Engineer |
| Microsoft Certified Systems Administrator | Microsoft Certified Systems Developer | Microsoft Corporation |
| Microsoft Data Access Components | Microsoft Disc Operating System | Microsoft Disk Operating System |
| Microsoft DOS | Microsoft Excel | Microsoft Exchange |
| Microsoft Extended | Microsoft Foundation Classes | Microsoft IIS |
| Microsoft IntelliMouse Explorer | Microsoft Internet Information Server | Microsoft Mail |
| Microsoft Mail Application Program Interface | Microsoft Network | Microsoft Networking |
| Microsoft Office | Microsoft Office Small Business Edition | Microsoft Point to Point Encryption |
| Microsoft Project | Microsoft SQL Server | Microsoft Windows |
| Microsoft Word | MicroStation | microtape |
| Microware Corporation | Microwave Hardware Description Language | MIDAS |
| Midas | Midas-WWW | middle-endian |
| middleware | MIDI | mid-level network |
| MIF | MIG | MIGRAINES |
| MII | MIIS | MIKE |
| mil | Milarepa | MILITRAN |
| mill | millennium bug | millennium meltdown |
| milli- | millihelen | milliLampson |
| millisecond | MILNET | MIMD |
| MIME | mimencode | Mimer SQL |
| MIME type | MIMIC | MIMOLA |
| mind mouse | mind uploading | Minerva software |
| Minesweeper, Chess, Solitaire Expert | minicomputer | Mini Disc |
| minifloppy | minimal automaton | minimax |
| Mini-ML | minimum seek time | Mini PL/I |
| Ministra | MINITAB II | MINIX |
| Minnesota Internet Users Essential Tool | MINT | MiNT |
| Mint Is Not TRAC | Minuet | MINUIT |
| minus | minus infinity | MIPS |
| MIPS project | MIPS R2000 | MIPS R2010 |
| MIPS R3000 | MIPS R4000 | MIPS Technologies, Inc. |
| Miracula | Miranda | MIRFAC |
| mirror | mirroring | mirror site |
| MIS | misbug | MIS Director |
| misfeature | MISHAP | Missed'em-five |
| missile address | missing | miswart |
| MIT | MIT AI Lab | MITI |
| MITILAC | MIT Licence | MIT License |
| MIT Lisp Machine | MITRE Corporation | MIT Research Laboratory for Electronics |
| MITS | MIT Scheme | MIX |
| MIXAL | MIX Communications | M-JPEG |
| MJS | mk | ML |
| ml | ML-2000 | MLAB |
| ML/I | MLISP | ML Kit |
| MLL | ML-lex | ML-Linda |
| ML Threads | ML-Twig | mm |
| Mma | mmap | MMCD |
| MMDF | MMI | MML |
| MMO | MMOG | MMORPG |
| MMS | MMU | MMX |
| MMX technology | mn | mnemonic |
| MNP | mo | Mobile Subscriber Integrated Services Directory Number |
| Mobile Triton | mobo | MOBSSL-UAF |
| moby | mockingbird | Mockingboard |
| Mock Lisp | mod | mod_autoindex |
| modal | modal logic | modam |
| MODCAL | Mode | mode |
| mode bit | MODEF | MODEL |
| model | model checking | modeling |
| modeling language | modelling | modelling language |
| Modelsim | Model-View-Controller | Model-View-Presenter |
| modem | MODEM7 | moderator |
| Modified Frequency Modulation | modifier | M O drive |
| MODSIM | MODSIM II | Modula |
| Modula-2 | Modula-2* | Modula-2+ |
| Modula-3 | Modula-3* | Modula-3pi |
| Modula-P | Modula-Prolog | Modula/R |
| modular arithmetic | Modular C | MODUlar LAnguage |
| Modular Prolog | Modular SB-Prolog | module |
| Modulex | modulo | modulo arithmetic |
| modulo operator | Mohammed Al-Khawarizmi | molly-guard |
| monad | monadic | Mongolian Hordes technique |
| moniter | monitor | monkey, scratch |
| monkey sort | monkey up | Mono |
| monochrome | Monochrome Display Adapter | monoid |
| monotonic | MONSTR | Montage |
| Monte Carlo | monty | MOO |
| Moof | Moore bound | Moore graph |
| Moore's Law | moose call | MooZ |
| Mops | MORAL | more |
| moria | morphing | Morse code |
| MORTRAN | MOS | Mosaic |
| Mosaic Communications Corporation | Moscow ML | MOSFET |
| Mosiac | MOS Technologies | MOS Technology |
| most general unifier | Most Significant Bit | motd |
| mother | motherboard | Motif |
| Motion JPEG | Motion Picture Experts Group | Motorola |
| Motorola 14500B | Motorola 6800 | Motorola 68000 |
| Motorola 6801 | Motorola 68010 | Motorola 68020 |
| Motorola 68030 | Motorola 68040 | Motorola 68050 |
| Motorola 68060 | Motorola 6809 | Motorola 680x0 |
| Motorola 68HC11 | Motorola 68LC040 | Motorola 88000 |
| Motorola, Inc. | mount | Mouse |
| mouse | mouse ahead | mouse around |
| mouse arrest | mouse belt | mouse droppings |
| mouse elbow | mouse mat | mouse pad |
| mouse trails | mouso | Moving JPEG |
| Moving Picture Expert Group | Moving Picture Experts Group | Moving Pictures Experts Group |
| Moxie | Mozilla | Mozilla Foundation |
| Mozilla Public License | mp | MP1 |
| MP-1 | MP2 | MP3 |
| MP3Pro | MPC | MPC Level 1 Specification |
| MPC Level 2 Specification | MPEG | MPEG-1 |
| MPEG-1 audio layer 1 | MPEG-1 audio layer 3 | MPEG-1 layer 3 |
| MPEG-2 | MPEG-21 | MPEG-2.5 audio layer 3 |
| MPEG-2 AAC Low Profile | MPEG-2 audio layer 3 | MPEG-2 Low Sampling Frequencies Extention |
| MPEG-2 LSF | MPEG-2 MC | MPEG-2 Multi Channel Extention |
| MPEG-3 | MPEG-4 | MPEG-4 AAC Main Profile |
| MPEG-4 AAC SSR | MPEG-4 Advanced Audio Coding Scalable Sampling Rate | MPEG-4 Harmonics, individual lines and noise |
| MPEG-4 Harmonic Vector eXCitation | MPEG-4 HILN | MPEG-4 HVXC |
| MPEG-7 | MPEGplus | MPG |
| mpg | MPI | MPL |
| MPL II | MPLS | MPLS domain |
| MP/M | MPP | MPPE |
| MPPL | MPR II | M-Prolog |
| MPS III | MPSX | MPV |
| MPX | mq | MQG |
| mr | MRAM | MRDA |
| MRDS | MRI | MROC |
| MROM | MRP | MRP II |
| MRS | ms | MS Access |
| MSAU | MSB | MS-BASIC |
| MS-DOG | MS-DOS | MSG.84 |
| msgGUI | MSIE | MSM |
| MS Mail | MSN | MS Office |
| MS Project | MSS | MS-Windows |
| MswLogo | MS Word | MSX |
| MSX-DOS | mt | MTA |
| MTBF | mtc | M Technology Association |
| MTOS | MTS | MTTR |
| MTU | Mu | mu |
| MUA | MUCAL | MUD |
| muddie | Muddle | mudhead |
| MUD Object Oriented | muFP | Muhammad al-Khwarizmi |
| Muhammad ibn Musa al-Khwarizmi | Muieblackcat | mu-law |
| Mule | Mul-T | Multi-BinProlog |
| multiboot | multiC | MultiCal System |
| multicast addressing | multicast backbone | Multi-channel Memorandum Distribution Facility |
| multician | Multi-Color Graphics Array | Multics |
| Multics Relational Data Store | Multiflow Computer | Multi-Garnet |
| multihomed host | multilayer perceptron | MultiLisp |
| multimedia | Multimedia and Hypermedia information coding Expert Group | MultiMedia Compact Disc |
| MultiMedia Extension | Multimedia Integrated Conferencing for European Researchers | Multimedia Internet Mail Extensions |
| Multimedia Messaging Services | Multimedia PC | Multimedia Personal Computer |
| multimedia system | multi-part key | Multi-Pascal |
| multiple access | Multiple Access with Colision Avoidance | multiple boot |
| Multiple Document Interface | multiple inheritance | Multiple Instruction Multiple Data |
| Multiple Instruction/Multiple Data | Multiple Master | multiple perspective software development |
| multiple value | Multiple Virtual Storage | multiplexer |
| multiplexing | multiplexor | Multiplexor Channel |
| multiplex printer | Multipop-68 | multiprocessing |
| multiprocessor | multiprogramming | Multiprotocol Label Switching |
| Multipurpose Internet Mail Extensions | multiscan | MultiScheme |
| Multistation Access Unit | multisync | Multisystem eXtention Interface Bus |
| multitasking | Multi-tasking Program for Microcomputers | multithreaded |
| multithreading | MultiTOS | multi-user |
| Multi-User Dimension | Multi-User Dungeon | Multi-User Shared Hallucination |
| Multi-Version Concurrency Control | multi-way branch | MuMath |
| mumblage | mumble | mumble mode |
| MUMPS | munch | munching |
| munching squares | munchkin | mundane |
| mung | munge | MUP |
| MU-Prolog | Murphy's Law | Muse |
| museum | MUSH | Music |
| Musical Instrument Digital Interface | Musicam | MuSimp |
| MUSL | mutant | Mutation Testing |
| MuTeX | mutex | mutter |
| mutual exclusion | mutually recursive | mutual recursion |
| mux | mv | MV* |
| MVC | MVCC | MVP |
| MVS | MVS/ESA | MVS/OE |
| MVS/Open Edition | MVS/SP | MVS/XA |
| mw | MX | mx |
| MXI | MXIbus | MX Record |
| my | My Favourite Toy Language | MYOB |
| MySpace | MySQL | MySQL AB |
| MYSTIC | MZ | mz |
| N | N10 | na |
| nadger | NAG | Nagling Coalescence |
| nagware | nailed to the wall | nailing jelly |
| naive | naive user | NAK |
| name capture | named | named pipe |
| name resolution | name service switching | namespace |
| naming convention | NaN | NAND |
| nano- | nanoacre | nanobot |
| nanocomputer | nanofortnight | nanometre |
| nanosecond | nanotechnology | Napier |
| NAPLPS | NAPSS | narrowband |
| narrowing | NAS | nasal demons |
| NASI | nastistical | NASTRAN |
| nastygram | NAT | Nathan Hale |
| National Advanced Systems | National Bureau of Standards | National Center for Supercomputing Applications |
| national characters | National Database Language | National Information Infrastructure |
| National Information Services and Systems | National Institute of Standards and Technology | National Research and Education Network |
| National Science Foundation | National Science Foundation Network | National Semiconductor |
| National Semiconductor 32000 | National Software Reuse Directory | National Spatial Data Infrastructure |
| National Television Standards Committee | native compiler | Native Language System |
| NATURAL | natural deduction | Natural English |
| natural language | Natural Language Information Analysis Method | natural language processing |
| natural number | nature | NAU |
| nav bar | navigating | navigation |
| navigation bar | Navigator | Nawk |
| NB | NBFCP | NBS |
| NBT | NC | nc |
| NCD | NCP | NCR Corporation |
| NCRL | NCR Language | NCS |
| NCSA | ND | NDIS |
| NDL | NDS | ne |
| neat hack | neats vs. scruffies | Nebula |
| NEC | NEC 780-C | needs assessment |
| neep-neep | negation by failure | negative acknowledgement |
| neighborhood bike code | NELIAC | Neon |
| neophilia | Neptune | nerd |
| Nerd pride | NERECO | NESL |
| nested class | net | net.- |
| netaddress | NetBEUI | NetBIOS |
| NetBIOS Frames Control Protocol | NetBios over TCP/IP | NetBOLLIX |
| NetBSD | netbui | netburp |
| netCDF | Netcom On-line Communication Services, Inc. | netdead |
| Netfind | net.god | NetHack |
| netiquette | NETL | netlag |
| NetLingo | netload | Netmarq Limited |
| netmask | NetNanny | netnews |
| net.personality | netpipes | net.police |
| netquette | Netrek | netrock |
| Netscape | Netscape Communications Corporation | Netscape Navigator |
| Netscape Public License | netsplit | netstat |
| netter | NetWare | NetWare Core Protocol |
| Netware Directory Services | Netware Input/Output Subsystem | NetWare Link State Protocol |
| network | network address | Network Addressable Unit |
| Network Address Translation | Network Address Translator | Network Administrator |
| Network Application Support | Network Attached Storage | network byte order |
| network card | network closet | Network Computing Devices |
| network database | Network Definition Language | Network Device Interface Specification |
| network engineer | Network extensible Window System | Network File System |
| Network Filing System | Network Information Center | Network Information Service |
| Network Information System | networking | network interface card |
| network interface controller | network layer | network layer reachability information |
| network management | network meltdown | Network News Transfer Protocol |
| network node | Network Node Interface | network number |
| Network Operating System | network operating system | Network Operations Center |
| network operator | network redirector | network segment |
| Network Solutions, Inc. | network storm | Network Termination |
| network, the | Network Time Protocol | network topology |
| network transparency | NetX | Net:X |
| neural nets | neural network | neuron |
| Neutral Interconnect | neutrosophic | neutrosophic logic |
| neutrosophic probability | neutrosophic set | neutrosophic statistics |
| Neutrosophy | Never Offline | newbie |
| New Flavors | newgroup wars | New Jersey |
| newline | NEWP | NEW Programming language |
| NeWS | news | NewsClip |
| newsfroup | newsgroup | newsletter |
| Newspeak | Newsqueak | news reader |
| New Storage System | new talk | New Testament |
| Newton | Newton-Raphson iteration | Newton's method |
| NewWave | NewYacc | New York State Educational Reasearch ETwork |
| New York University | NEXOR | Nexpert Object |
| NeXT, Inc. | Next Program Counter | NEXTSTEP |
| nf | NFA | NFQL |
| NFR | NFS | NFT |
| ng | NGL | NHOH |
| ni | NIAL | NIAL Systems Ltd. |
| NIAM | nibble | Nibble Mode DRAM |
| NIC | NIC.DDN.MIL | NICE |
| nick | nickle | NICOL I |
| NIFOC | Nightmare File System | night mode |
| NIH | NIHCL | NII |
| NIKL | Niklaus Wirth | NIL |
| niladic | Ninety-Ninety Rule | Nintendo |
| NIOS | nipple | NIS |
| NISO | NISS | NIST |
| NJCL | nl | NLANR |
| NLM | NLP | NLRI |
| NLS | NLSP | NLX |
| NMI | nML | NMU |
| NN | nn | NNI |
| NNTP | no | NOC |
| NODAL | Nodal Switching System | noddy |
| node | Node.js | Node Package Manager |
| noise | noise margin | noise shaping |
| NOL | NOMAD | NOMEX underwear |
| Nominal Semidestructor | non-algorithmic procedure | non-constructive proof |
| nondeterminism | nondeterministic | nondeterministic automaton |
| nondeterministic polynomial time | Nondeterministic Turing Machine | non-impact printer |
| non-interlaced | nonintrusive testing | nonlinear |
| Non-Maintainer Upload | Non-Maskable Interrupt | non-optimal solution |
| Nonpareil | non parity | non-polynomial |
| Non Return to Zero Inverted | nontrivial | Non-Uniform Memory Access |
| non-uniform quantising logarithmic compression | Non-Uniform Rational B Spline | non-volatile |
| non-volatile memory | Non-Volatile Random Access Memory | non-volatile storage |
| noob | no-op | NOR |
| NORC COMPILER | NorCroft | NORD PL |
| NORDUnet | norm | normal distribution |
| normal form | normalisation | normalised |
| normal order reduction | normed space | northbridge |
| NorthWestNet | NOS | NOT |
| Not-a-Number | notebook | NoteCards |
| Notepad | Notes | Nother |
| not ready for prime time | notspot | notwork |
| Nova | Novell Data Systems | Novell DOS |
| Novell, Inc. | Novell NetWare | NOWEB |
| no-write allocation | NP | np |
| NPC | NP-complete | NP-hard |
| NP-hilarious | NPL | npm |
| NPPL | N-Prolog | NP time |
| NP tricky | NQS | Nqthm |
| nr | NREN | nroff |
| NRZ | NRZI | ns |
| NS16000 | NS32000 | NSA line eater |
| NSAPI | NSDI | NSE |
| NSF | NSFIP | NSFNET |
| NSI | nslookup | NSRD |
| NSS | NT | NT1 |
| NT5 | ntalk | NTAS |
| NT File System | NTFS | n-tier |
| NTIS | NTMBS | NTP |
| NTSC | NTU | nu |
| NuBus | nu-calculus | NUCLEOL |
| nude | nuke | null |
| nullary | null modem | null-terminated multibyte string |
| NUMA | Number 5 Electronic Switching System | number crunching |
| number keys | numbers | number sign |
| numeric keypad | Numeris | Nuprl |
| NU-Prolog | nurbs | Nu Thena |
| nut loose on keyboard | NUXI problem | NVL |
| NVRAM | NVS | NWNET |
| NYAP | nybble | nyet.gif |
| nyetwork | nym | nym server |
| Nyquist frequency | Nyquist Theorem | NYSERNET |
| NYU OMNIFAX | nz | O |
| O2 | Oaklisp | OAP |
| OASIS Open Document Format for Office Applications | OATH | Ob- |
| OBDC | OBE | Oberon |
| Oberon-2 | Oberon-V | OBEX |
| obfuscated | Obfuscated C Contest | obi-wan error |
| OBJ | OBJ0 | OBJ2 |
| OBJ3 | object | ObjectBroker |
| ObjectCenter | Object CHILL | object code |
| Object-code Buffer Overrun Evaluator | Object Compatibility Standard | Object Constraint Language |
| Object Database Management Group | Object Data Management Group | Objecteering |
| Object Exchange | objectfuscated code | object identifier |
| Objectionable-C | Objective C | Objective CAML |
| Objective Modula-2 | Objective PASCAL | Object Linking and Embedding |
| Object Lisp | ObjectLOGO | Object Management Group |
| Object management system | object method | Object Modelling Technique |
| Object Oberon | object-orientation | object-oriented |
| object-oriented analysis | object-oriented database | object-oriented design |
| Object-Oriented Fortran | object-oriented language | Object-Oriented Pascal |
| object-oriented polymorphism | object-oriented programming | object-oriented programming language |
| Object-oriented SQL | Object-Oriented Turing | Objectory |
| ObjectPAL | Object Pascal | Object Persistence Framework |
| object relational mapping | object relational modelling | Object Request Broker |
| Object Role Modeling | Object Value | Objectworks |
| Object Z | Objlog | OBJT |
| ObjVlisp | ObjVProlog | Obliq |
| oblique stroke | Oblog | OBOE |
| OBSCURE | observational equivalence | Oc |
| OC-12 | OC-3 | OC-48 |
| OCAL | occam | occam 2 |
| Occam's Razor | occlude | occurs check |
| OCL | OCLC | OC-n |
| OCODE | OCP | OCR |
| OCS | octal | Octave |
| octet | octothorpe | OCX |
| OD390 | ODA | ODBC |
| ODC | Ode | ODI |
| ODIF | ODMA | ODMG |
| odometry | ODP | ODS |
| ODSA | ODT | OEM |
| OFA | off-by-one error | Office |
| office automation | Office By Example | Office Workstations Limited |
| Official Production System | off-line | off-line world |
| offset | offshoring | off-side rule |
| off the trolley | ogg | Ogg Vorbis |
| OHCI | Ohm | Ohm, Georg Simon |
| ohnosecond | OIC | OID |
| OIL | OLAP | OLAP Council |
| OLC | OLDAS | old fart |
| old talk | Old Testament | OLE |
| OLE custom controls | OLE DB | OLE for Process Control |
| OLGA | Olivetti | O-Logic |
| OLTP | OLWM | om |
| OMA | Omega | Omega-algebraic |
| Omega test | OMF | OMG |
| OMNICODE | OMNIFAX | OMNITAB |
| OMR | OMS | OMT |
| OMTool | ONC | Ondine |
| one | one-banana problem | one-dimensional array |
| one-line fix | one-liner wars | ones complement |
| One-Time Password | One Time Programmable Read-Only Memory | one-way function |
| one-way hash function | on-line | On-Line Analytical Processing |
| Online Computer Library Center, Inc. | On-Line Computer system | Online Media |
| On-line Process Synthesizer | Online Public Access Catalog | On-Line Transaction Processing |
| Ontic | onto | ontology |
| OnX | OO | OOA |
| OOD | OODB | OODBMS |
| OOF | OOGL | OOo |
| OOP | OOPL | OOPS |
| OOPSLA | OOSD | OOZE |
| op | OPAC | Opal |
| OPC | op code | open |
| open box testing | open brace | OpenBSD |
| open/closed principle | open-collar worker | Open DataBase Connectivity |
| Open Data-link Interface | Open DeathTrap | Open Desktop |
| Open Distributed Processing | Open Distributed System Architecture | OpenDoc |
| OpenDocument | Open Document Architecture | Open Document Interchange Format |
| Open Document Management API | OpenGL | Open Graphics Library |
| Open Group | OpenInsight | open interval |
| Open Look | Open Network Computing | OpenOffice.org |
| open parenthesis | Open Prolog | Open Scripting Architecture |
| Open Search | Open Shortest-Path First | Open Shortest-Path First Interior Gateway Protocol |
| Open Software Foundation | open source | Open Source Definition |
| Open Source Initiative | Open source license | OpenStep |
| open switch | Open System Architecture | Open Systems Interconnect |
| Open Systems Interconnection | Open Telecom Platform | Open Trading Protocol |
| OpenTransport | Open University | OpenVMS |
| OpenWindows | operand | operating |
| operating system | Operating System/360 | Operating System/Multiprogramming of Fixed Tasks |
| operational database | Operational Data Store | operational requirements |
| operational semantics | operational test and evaluation | operational testing |
| operation code | operations support technician | operator |
| Operator Control Language | operator overloading | OPF |
| Opportunity Management System | OPS | OPS5 |
| OPS83 | Optical Carrier 12 | Optical Carrier 3 |
| Optical Carrier 48 | Optical Carrier n | Optical Character Recognition |
| optical computing | optical diff | optical disc drive |
| optical disk drive | optical drive | optical fiber |
| optical fibre | optical grep | Optical Mark Reader |
| optical mouse | Optical Signal Processor | optical storage |
| Optical Storage Technology Association | Optical Time Domain Reflectometer | Optical Time Domain Reflectometry |
| optimal | Optimal Flexible Architecture | optimise |
| optimising compiler | optimism | optimize |
| option | OPTRAN | Opus |
| OR | Oracle | Oracle 7 |
| Oracle Card | Oracle*CASE | Oracle Co-operative Applications |
| Oracle Corporation | Oracle Parallel Server | Oracle Rdb |
| Oracle Toolkit | Orange Book | ORB |
| Orbit | Orca | Order Code Processor |
| order-embedding | ordering | ordinal |
| ordinary differential equation | ordinate | OREGANO |
| O'Reilly and Associates | org | Organic Mode |
| Orient84/K | Original Equipment Manufacturer | ORKID |
| ORM | orphaned i-node | orphan process |
| ORTHOCARTAN | orthogonal | orthogonal instruction set |
| Orwell | OS | OS2 |
| OS/2 | OS/360 | OS/390 |
| OS-9 | OSA | OSA extension |
| OSAX | Osborne 1 | Osborne, Adam |
| Osborne Computer Corporation | OSCAR | OSD |
| OSE | OSF | OSI |
| OSI Model | OSI Reference Model | OSI-RM |
| OSI seven layer model | O'small | OS/MFT |
| OS/MVT | OSP | OSPF |
| OSQL | OSSL | OSTA |
| OS/VS1 | OS/VS2 | OT |
| OTDR | OT&E | OTI |
| OTOH | OTP | OTPROM |
| OTT | Ottawa Euclid | Ousterhout, John K. |
| Ousterhout's dichotomy | Ousterhout's fallacy | Ousterhout's false dichotomy |
| out | outer join | outline font |
| out-of-band | output | output device |
| Outside Awareness Port | outside-in testing | outsourcing |
| overclocking | Overdrive | overflow |
| overflow bit | overflow flag | overflow pdl |
| overhead | overloading | overriding |
| overrun | overrun screw | overuse strain injury |
| OWHY | OWL | Owl |
| Ox | Oz | oz |
| Oz-Email | P+ | P1754 |
| p2c | P2P | P3L |
| P4 | P6 | pa |
| PABX | PACE | Packard Bell Electronics, Inc. |
| packed decimal | Packed Encoding Rules | packet |
| Packet Assembler/Disassembler | packet driver | Packet in Plastic Grid Array |
| Packet InterNet Groper | packet radio | packet sniffer |
| packet sniffing | packet switch | packet-switched |
| packet switching | Packet Switch Node | packet writing |
| PackIt | PACT I | PACTOLUS |
| PAD | padded cell | Paddle |
| PAGE | page | paged |
| Page Description Language | Paged Memory Management Unit | page fault |
| page in | pagelet | page mode |
| Page Mode DRAM | Page Mode Dynamic Random Access Memory | page out |
| pager | paging | PaiLisp |
| pain in the net | Paintbrush | PAISley |
| Pajek | PAL | Palace |
| palette | palmtop | Palo Alto Research Center |
| Palo Alto Research Centre | PAM | Pam |
| Pandora | panic | PANON |
| PANS | Pansophic | Pantone |
| PAP | Paper Feed Control Character | papermail |
| paper-net | paper tape | paraconsistent probability |
| PARADE | PARADIGM PLUS | Paradigms of AI Programming |
| Paradise | Paradox | paradox |
| Paradox Application Language | Paragon | Paralation |
| Paralation C | Paralation LISP | ParAlfl |
| Parallaxis | parallel | Parallel Advanced Technology Attachment |
| Parallel ATA | Parallel C | parallel computer |
| parallel computing | Parallel FORTH | Parallel Fortran |
| Parallel Haskell | parallelism | Parallel Pascal |
| parallel port | Parallel Presence Detect | parallel processing |
| parallel processor | parallel random-access machine | parallel reduction |
| Parallel Server Option | Parallel SML | Parallel Sysplex |
| Parallel Virtual Machine | param | parameter |
| parameter RAM | parametric polymorphism | paraML |
| paranoid programming | ParaSoft Corp | Parasol |
| PARC | ParcPlace Systems | parent |
| parentheses | parent message | parent process |
| Pari | Paris | parity |
| parity bit | parity error | Parkinson's Law of Data |
| Park-Miller | Parlance | Parlog |
| Parlog++ | parm | PARMACS |
| ParMod | PARS | parse |
| PARSEC | parsed | parser |
| parser generator | parsing | Parsley |
| Partial Differential Equation LANguage | partial equivalence relation | partial evaluation |
| partial function | partial key | partially ordered set |
| partial order | Partial Response Maximum Likelihood | partition |
| partitioned data set | PARTS | PARULEL |
| PASC | Pascal | Pascal- |
| Pascal-80 | Pascal+CSP | Pascal-F |
| Pascal-FC | Pascal/L | Pascal-Linda |
| Pascal-m | Pascal-P | Pascal P4 |
| Pascal Plus | Pascal/R | Pascal-S |
| Pascal-SC | pasos2 | Pasqual |
| PASRO | PASSIM | passive matrix display |
| passphrase | passw0rd | password |
| Password Authentication Protocol | paste | pastie |
| PAT | PATA | patch |
| patch pumpkin | patch space | PATCHY |
| path | path coverage testing | pathname |
| pathname separator | pathological | Path Pascal |
| pathspec | pattern matching | pattern recognition |
| PAW | PAW++ | payware |
| PB Cache | PBCAK | PBD |
| PBEM | PBKAC | PBM |
| PBX | PC | pC++ |
| PC-1834 | PC200 | PC-7150 |
| PCA | P-CAD | PC AT |
| PCB | PC Card | PCCTS |
| PCF | PCI | PCI bus |
| PCI Configuration Utility | PCI Mezzanine Card | PCI slot |
| PC-ism | PCjr | PCL |
| PCLIPS | PCM | PCMCIA |
| PCMIA | PCN | PC-NFS |
| P-code | PC Pursuit | PC-RT |
| PCS | PC-Scheme | PCS/Geneva |
| PC support | PC-TALK III | PCTE |
| PCTE+ | PC-TILES | PCU |
| PC-ware | pcx | PD |
| PDA | PDC | PDC Prolog |
| PDEL | PDELAN | PDES |
| PDF | PDFTeX | PDH |
| PDIL | pdksh | PDL |
| PDL2 | PDM | PDP |
| PDP-10 | PDP-11 | PDP-20 |
| PDP-6 | PDP-7 | PDP Assembly Language |
| PDS | PDSA cycle | PDS/MaGen |
| PDU | PE | pe |
| PeaceNet | peak envelope power | Peano |
| Peano arithmetic | PEARL | Pebble |
| Pebbleman | PEBCAK | PEBKAC |
| PECOS | Pedagogic Algorithmic Language | PEEK |
| PEEL | peephole optimisation | peephole optimization |
| peer | peer-to-peer | peer-to-peer network |
| Pegasus | PEIPA | PEM |
| PENCIL | pencil and paper | penis war |
| Pentium | Pentium 2 | Pentium 3 |
| Pentium II | Pentium III | Pentium II Xeon |
| Pentium Pro | peon | PeopleSoft |
| PEP | Pepper | PEPsy |
| PER | percent | Perceptional Adaptive Subband Coding |
| perceptron | percussive maintenance | perf |
| perfect programmer syndrome | PERFORM | period |
| periodic group | peripheral | Peripheral Component Interconnect |
| peripheral device | Peripheral Technology Group | Perl |
| Perl5 | perl-byacc | Perl profiler |
| permanent link | Permanent Virtual Circuit | Permanent Virtual Connection |
| permission | permutation | perplexity |
| persistence | persistent | Persistent Functional Language |
| persistent memory | Personal Communication Network | Personal Communication Services |
| personal computer | Personal Computer Memory Card International Association | Personal Digital Assistant |
| Personal Identification Number | Personalized Array Translator | person of no account |
| perspective | PERT | pessimal |
| pessimising compiler | peta- | petabyte |
| petaflops | petdingo | Peter P. Chen |
| Petri net | PETSCII | PEX |
| pf | PFE | PFL |
| pfm | pForth | Pfortran |
| PFP | pg | PGA |
| PGA370 | PGP | PH |
| pH | ph | phacker |
| phage | phase | phase alternating line |
| Phase Encoded | phase of the moon | phase-shift keying |
| phase space | phase-wrapping | PHIGS |
| Philip R. Bagley | Philips | Philips SCC68070 |
| Phil Katz | philosophy | phishing |
| PHOCUS | Phoenix | phone freaking |
| phone mail | phone phreaking | Phonetastic |
| Phong shading | phosphor fatigue | photo CD |
| Photoshop | PHP | PHP: Hypertext Preprocessor |
| phpmyadmin | phreak | phreaking |
| physical | physical address | physical addressing |
| physical file | physical layer | physical memory |
| physical memory address | Physical Sequential | Physical Transport Network |
| Physics Analysis Workbench | PI | pi |
| PIC | pi-calculus | Pick BASIC |
| PICL | PICNIC | pico- |
| picosecond | PICS | PICT |
| PicTeX | pictogram | pictograph |
| Pictorial Janus | picture | picture element |
| Picture Quality Scale | PID | pidgen+ |
| Pidgin | PIE | pif |
| piggybacking | pig, run like a | PIGUI |
| PIL | PILE | PIL/I |
| PILOT | pilot error | Pilot European Image Processing Archive |
| PIM | PIN | PINBOL |
| Pine | pin feed | ping |
| ping command | ping-flood | pinging |
| ping-pong | Pin Grid Array | Pink-Shirt Book |
| pin-out | PIO mode | PIP |
| pipe | pipeline | pipeline break |
| Pipeline Burst Cache | pipelined | Pipelined Burst Cache |
| pipeline stall | pipelining | PIPEX Ltd. |
| piping | piracy | pirate |
| PIRL | pistol | PIT |
| PITA | pixel | pixels per inch |
| pixmap | pizza box | PJPEG |
| PK | pk | PKE |
| PKI | PKLITE | PKUNZIP |
| PKWARE, Inc. | PKZIP | pl |
| PL1 | PL/1 | PL-11 |
| PL360 | PL516 | PL-6 |
| PL.8 | Pla | PLACE |
| PLAGO | plaid screen | PLAIN |
| plain ASCII | Plain Old Documentation | Plain Old Telephone Service |
| Plain Old Telephone System | plain TeX | plaintext |
| PLAN | Plan 9 | Planet |
| plan file | PLANIT | Plankalkül |
| PLANNER | Planner-73 | PLANS |
| plants | PLASMA | Plastic Pin Grid Array |
| platform | Platform for Internet Content Selection | Platform Independent Graphical User Interface |
| platinum-iridium | Platon | PLAY |
| play by electronic mail | Playground | Play, Inc. |
| playpen | Playstation | playte |
| PLC | PL/C | PL Cornell |
| PLD | plenum cable | pleonasm |
| plesiochronous | Plesiochronous Digital Hierarchy | Pleuk grammar development system |
| Plexus | PL/I | PL/I-FORMAC |
| pling | plingnet | PLisp |
| PL/I SUBSET | PL/I Subset G | PLITS |
| PLL | PL/M | PLMK |
| plokta | plotter | PL/P |
| PL/PROPHET | PL/S | PL/Seq |
| PL/SQL | PLTL | plug and play |
| plug and pray | Plug Compatible Manufacturer | Pluggable Authentication Module |
| plugh | plug-in | PLUM |
| Plumber | plumbing | Plural EuLisp |
| PLUS | plus | PLUSS |
| ply | PM | pm |
| pm2 | P-mail | PMBX |
| PMC | PML | PMP |
| pn | pnambic | PNG |
| PNP | PNU-Prolog | POA |
| PoB | POC | POCAL |
| pocket calculator | pocket computer | pod |
| P.O.D. | podcast | POE |
| POFAC | POFOD | POGO |
| point | point-and-drool interface | point-and-grunt interface |
| pointed domain | pointer | pointer swizzling |
| pointing device | pointing stick | Point Of Contact |
| point of presence | point of sale terminal | Point-to-Point Protocol |
| Point-to-Point Protocol over ATM | Point-to-Point Protocol over Ethernet | Point-to-Point Tunneling Protocol |
| Poisson distribution | POJO | poke |
| Pokémon exception handling | Polka | poll |
| polling | Poly | polygon pusher |
| POLYGOTH | polylithism | Poly/ML |
| polymorphic | polymorphic lambda-calculus | polymorphism |
| polynomial | polynomial-time | polynomial-time algorithm |
| polyvinyl chloride | POM | pompom |
| Ponder | Pong | POOL |
| POOL2 | POOL-I | Pooling Agreement for Technical Assistance |
| POOL-T | POP | PoP |
| pop | POP++ | POP-1 |
| POP-10 | Pop-11 | POP-2 |
| POP3 | POP-9X | POPART |
| POPCORN | pop-down menu | POPJ |
| Poplar | POPLER | POPLOG |
| POPLOG ML | POP server | PopTalk |
| PopularitY of Programming Languages | POR | porn |
| porno | pornography | port |
| portability | portable | Portable AIRTIME |
| Portable Commodore 64 | Portable Common Loops | Portable Common Tool Environment |
| portable computer | Portable Document Format | Portable Forth Environment |
| Portable Network Graphics | Portable Object Adapter | Portable Operating System Interface |
| Portable Pixmap | Portable Scheme Debugger | Portable Scheme Interpreter |
| Portable Standard Lisp | Portable Tool Interface | Port Address Translation |
| PORTAL | portal | porting |
| Port Language | portmapper | port number |
| POS | POSE | poset |
| positional representation | POSIX | POSIX Threads |
| POST | post | postcardware |
| posted write-through | Postel, Jon | postfix notation |
| postfix syntax | POSTGRES | PostgreSQL |
| posting | postmaster | post office problem |
| Post Office Protocol | post-order traversal | POSTQUEL |
| PostScript | Postscript point | Post, Telephone and Telegraph administration |
| POSYBL | potential difference | POTS |
| pound | pound on | pound sign |
| POWER | PowerBuilder | power cycle |
| powerdomain | PowerFuL | power hit |
| Power Mac | Power Macintosh | power-on reset |
| power-on self-test | PowerOpen | PowerOpen Association |
| PowerOpen Environment | PowerPC | PowerPC 601 |
| PowerPC G3 | PowerPC Platform | PowerPC Reference Platform |
| Powerpoint | power save mode | powerset |
| Powersoft Corporation | power supply | power supply unit |
| PP96 | PPC | PPCP |
| PPD | PPGA | ppi |
| PPL | PPLambda | PPM |
| PPN | PPP | PPPoA |
| PPPoE | P-Prolog | PPTP |
| PQS | PR | pr |
| pr0n | PRA | pragma |
| PRAM | Praxis Critical Systems | pre\box |
| PRE-CC | PRECCX | precedence |
| precedence lossage | precharge | precision |
| predecessor | predicate calculus | predicate logic |
| predict | predomain | pre-emptive multitasking |
| prefetch | prefix | prefix notation |
| prefix syntax | pre-order | pre-order traversal |
| PREP | prepaging | prepend |
| preprocessor | pre-sales support rep | presence detect |
| presentation layer | Presentation Manager | prestidigitization |
| PRESTO | Pretty Amazing New Stuff | Pretty Good Privacy |
| pretty pictures | prettyprint | pretzel key |
| preventive maintenance | PRI | primary cache |
| Primary Domain Controller | primary key | primary management domain |
| Primary Rate Interface | primary storage | Prime Computer |
| Primenet, Inc. | prime number theorem | prime time |
| primitive | Princeton University | principal type |
| PRINT | printed circuit board | printer |
| Printer Access Protocol | printer port | printf |
| PRINT I | printing discussion | print server |
| Print Services Facility | priority inheritance | priority interrupt |
| priority inversion | priority queue | priority scheduling |
| PRISM | Prisoner of Bill | privacy |
| Privacy Enhanced Mail | private | Private Automatic Branch eXchange |
| Private Branch Exchange | private key | private-key cryptography |
| Private Manual Branch eXchange | privileged instruction | PRL |
| PRMD | PRML | probabilistic |
| probabilistic automaton | Probability of Failure on Demand | Probe |
| problem state | Problem Statement Language/Problem Statement Analyser | PROC |
| procedural | procedural language | Procedural Language/SQL |
| procedure | proceedings | process |
| Process and Experiment Automation Real-Time Language | process data | Process Design Language 2 |
| process ID | process identifier | processing |
| processor | Processor Direct Slot | processor farm |
| Processor System Modeling Language | processor time | process scheduling |
| process table | PROCOL | Procomm |
| Procrustean string | Prodigy | ProDoc |
| product | production system | Professional Graphics Adapter |
| Professional Office System | professional programming | professional services |
| PROFILE | profile | PROFS |
| PROGENY | proglet | program |
| Program Composition Notation | program counter | Program Design Language |
| Program Evaluation and Review Technique | Program Information File | Programmable Airline Reservation System |
| Programmable Array Logic | Programmable Interrupt Controller | Programmable Logic Controller |
| Programmable Read-Only Memory | Programmed Data Processor | PROgrammed Graph REwriting Systems |
| programmer | Programmer Brain Damage | Programmer's Cheer |
| Programmers Hierarchical Interactive Graphics System | PROgrammer's Microapplication Language | Programmer's Switch |
| programming | programming fluid | programming language |
| Programming Language/Cornell | Programming Language/Systems | Program Temporary Fix |
| program transformation | Prograph | PROGRES |
| progressive coding | Progressive JPEG | progressive/sequential coding |
| PROJECT | project assurance | Project Athena |
| Project Guardian | projection | projective plane |
| Project MAC | project management | project planning |
| Prolog | Prolog++ | Prolog-2 |
| Prolog-D-Linda | Prolog-II | Prolog-III |
| Prolog-Linda | Prolog/Mali | PROM |
| PROMAL | Prometheus | promiscuous mode |
| PROM monitor | pron | Pronet |
| Pronunciation | proof | PROOF/L |
| proof theory | propeller head | propeller key |
| proportionally spaced font | Proposal Writing | proposition |
| propositional calculus | propositional logic | Proposition of a Language Useable for Structured Specifications |
| proprietary | PROSE | ProSet |
| PROSPER | Prospero | ProTalk |
| protected mode | PROTEUS | protocal |
| protocol | protocol analyser | protocol converter |
| Protocol Data Unit | protocol layer | protocol stack |
| protoduction | PROTON | Protosynthex |
| prototype | Prototyper | prototyping |
| provably difficult | provably unsolvable | provider |
| provocative maintenance | prowler | proxy |
| proxy ARP | proxy gateway | Proxy Server |
| proxy server | PS | PS1 |
| PS2 | PS/2 | PS 440 |
| PSA | PS-ALGOL | pSather |
| PSD | PSDN | pseudo |
| pseudocode | pseudoprime | pseudorandom number |
| PseudoScheme | pseudosuit | pseudo-tty |
| PSF | PSI | Psion |
| Psion Organiser | PSK | PSL |
| PSL/PSA | PSML | PSN |
| PSO | PSPP | PSTN |
| PSU | psychedelicware | psyton |
| pt | P-TAC | ptc |
| PTF | Pthreads | PTI |
| PTN | Ptolemy | PTT |
| PUB | pub | public directory |
| public domain | public domain software | public-key cryptography |
| Public-Key Cryptography Standards | public-key encryption | Public Key Infrastructure |
| Public Switched Telephone Network | PUBlishing | puff |
| PUFFT | pull | pull-down list |
| pull-down menu | pull media | Pulse Code Modulation |
| pumpkin | pumpkineer | pumpking |
| punch card | punched card | punt |
| Purdue Compiler-Construction Tool Set | Purdue University | pure functional language |
| pure lambda-calculus | PureLink | Pure Lisp |
| purely functional language | Purify | Purple Book |
| purple wire | Purveyor | push |
| push-button | Push Down List | push media |
| P value | PVC | PVM |
| PV-WAVE | pw | PWM |
| py | PYPL | Pythagoras |
| Pythagoras's Theorem | Pythagoras' Theorem | Pythagorean Theorem |
| Python | Q | QA |
| qa | QA4 | QAM |
| Qbasic | QBE | QBIC |
| QCA | QCIF | qdjanus |
| QDOS | QEMM386 | QIC |
| QL | Qlambda | QLISP |
| QLOG | QMQP | QMTP |
| QMW | Q'NIAL | QNX |
| QoS | QPE | QSAM |
| QT-OBJECTS | QTRADER | quad |
| Quadralay Corporation | Quadrature Amplitude Modulation | quadruple bucky |
| quadruplex | Quake | Qualcomm |
| quality | quality assurance | quality control |
| quality of service | Quality Systems & Software Ltd. | quantifier |
| Quantify | quantum | quantum bogodynamics |
| quantum cell | quantum cell wire | quantum computer |
| quantum computing | quantum dot | Quantum-dot Cellular Automata |
| quarter | Quarter CIF | Quarter Inch Cartridge |
| Quay Financial Software | QUEASY | Queen Mary and Westfield College |
| Queens Problem | Queens Puzzle | Queen's University |
| QUEL | query | Query By Example |
| query by image content | query expansion | ques |
| Quest | question mark | queue |
| Queued Sequential Access Method | QUICK | quick-and-dirty |
| QuickDraw | Quick Mail Queueing Protocol | Quick Mail Transfer Protocol |
| Quicksilver | Quicksort | QuickTime |
| quiesce | quiesce time | QUIKSCRIPT |
| QUIKTRAN | QUIN | quine |
| Quintec-Objects | quintillion | Quintus Prolog |
| quote chapter and verse | quotient | Qu-Prolog |
| Quty | qux | QWERTY |
| QX | R2000 | R2RS |
| R3.99RS | R3RS | R4RS |
| rabbit job | RACE | race condition |
| RACF | RAD | Raddle |
| Radio-frequency identification | Radio Frequency Interference | radio in the loop |
| radiosity | RADIUS | radix |
| RAID | RAIL | rainbow series |
| rain dance | RAIS | RAISE |
| RAISE Specification Language | RAL | RAM |
| Rambus DRAM | Rambus, Inc. | RAMDAC |
| RAM disk | RAM drive | RAMIS II |
| RAMTRON | random | random-access memory |
| Random Access Memory Digital-to-Analog Converter | randomness | random number |
| random testing | range | ransomware |
| Rapid Application Development | RapidCAD | Rapidly Extensible Language, English |
| rapid prototyping | Rapidwrite | RAPT |
| RARE | rare mode | RARP |
| RAS | RASP | raster |
| raster blaster | raster burn | raster font |
| rastergram | raster graphics | Raster Image Processor |
| rasterising | rasterizing | raster subsystem |
| Ratatosk | rat belt | RatC |
| RATEL | Rate monotonic scheduling | RATFIV |
| RATFOR | rational | RATional Fortran |
| Rationalized C | rave | rave on! |
| ravioli code | raw data | raw mode |
| RAWOOP-SNAP | ray casting | Rayleigh distribution |
| Ray Tomlinson | ray tracing | R:BASE |
| RBASIC | RBCSP | RBOC |
| rc | RC4 | RCA 1802 |
| RCA 1805 | RCC | rc file |
| RCL | rcp | RCS |
| Rdb | rdb | RDBA |
| RDBMS | RDF | RDI |
| RDL | RDOS | RDP |
| RDRAM | RDS | RE |
| re | read-eval-print loop | README file |
| Read-Only Memory | read-only user | real |
| RealAudio | real estate | real hack |
| reality check | realization | Really Simple Syndication |
| real mode | real number | real operating system |
| Real Programmer | Real Programmers Don't Use Pascal | Real Simple Syndication |
| Real Soon Now | real-time | Real-Time Common Design Language |
| Realtime Disk Operating System | Real-Time Euclid | Real-Time Mentat |
| Real-Time Object-Oriented Modeling | Real-Time Operating System | Real-Time Operating System Nucleus |
| Real-Time Pascal | Real Time Streaming Protocol | real-time structured analysis |
| Real-Time Transport Protocol | real user | Real Video |
| Real World | reaper | reassembly |
| reboot | REC | recent changes |
| recipe | recipient | Recital |
| RECOL | Recommended Standard | record |
| Record Management Services | records | Record Separator |
| rectangle slinger | recurrence relation | recurse |
| recursion | recursion theory | recursive |
| recursive acronym | recursive definition | recursive descent parser |
| Recursive Functional Algorithmic Language | Recursive Macro Actuated Generator | recursive type |
| Red | Red Book | Red Brick Intelligent SQL |
| Redcode | redex | Red Hat |
| RediLisp | redirection | redirector |
| RedNet Ltd. | redocumentation | REDUCE |
| Reduced Instruction Set Computer | reduction | reduction strategy |
| redundancy | Redundant Array of Independent Disks | Redundant Array of Independent Drives |
| Redundant Array of Inexpensive Disks | Redundant Array of Inexpensive Servers | Redundant Arrays of Inexpensive Disks |
| red wire | red zone | re-engineering |
| re-entrant | refactoring | REFAL |
| REF-ARF | reference | reference counting |
| referential integrity | referentially transparent | referential transparency |
| referer | referrer | REFINE |
| Refined C | Refined Fortran | reflexive |
| reflexive domain | Reflexive transitive closure | RefLisp |
| refresh | refreshable braille display | refreshable display |
| refresh rate | refuctoring | refutable |
| regex | regexp | Regina |
| regional network | register | register allocation |
| register assignment | register dancing | registered port |
| register set | register spilling | Register Transfer Language |
| registry | regression | regression testing |
| REG-SYMBOLIC | REGTRAL | regular expression |
| Regular Expression Converter | regular graph | rehi |
| Reid, Brian | reify | re-image |
| reincarnation, cycle of | reinvent the wheel | relation |
| relational algebra | relational calculus | relational database |
| relational database management system | relational data model | relational DBMS |
| relational language | relational model | RELATIVE |
| relatively prime | relative pathname | Relative Record Data Set |
| RELCODE | release | released version |
| REL English | relevance | reliability |
| Reliability, Availability, Serviceability | reliable communication | Reliable Data Protocol |
| religion of CHI | religious issues | REM |
| remailer | Remote Access Services | Remote Database Access |
| Remote Desktop Protocol | remote echo | Remote Job Entry |
| remote login | Remote Method Invocation | remote monitoring |
| Remote Operations Service Element | Remote Procedure Call | Remote Reference Layer |
| Remote Spooling Communication Subsystem | Remote Write Protocol | removable disk |
| removable hard disk | rendering | RenderMan Shading Language |
| rendezvous | REP | repeat |
| repeater | repeating group | repeat loop |
| repeat until | repetitive strain disorder | repetitive strain injury |
| REPL | replacement algorithm | Replay |
| replication | replicator | reply |
| Repondez s'il vous plait | Report Program Generator | repository |
| Representation Language Language | Request For Comments | Request For Proposal |
| Request For Technology | Required-COBOL | requirements |
| Requirements Acquisition and Controlled Evolution | requirements analysis | Requirements Engineering |
| Research Systems, Inc. | ResEdit | reserved memory |
| resolution | resolver | Resource Access Control Facility |
| Resource Description Framework | resource fork | Resource Reservation Protocol |
| Restricted EPL | restriction | Restructured EXtended eXecutor |
| restructuring | retcon | rete |
| RETI | Retrieve | retrocomputing |
| retronym | return from interrupt | return from the dead |
| Return To Zero | reusability | reuse |
| Reverse Address Resolution Protocol | Reverse ARP | reverse engineering |
| Reverse Polish Notation | reverse polish syntax | Revised ALGOL 60 |
| revision | Revision Control System | Revolutionary Surrealist Vandal Party |
| revolutions per minute | REX | REXX |
| REXXWARE | RF | RFC |
| RFC 1014 | RFC 1034 | RFC 1035 |
| RFC 1057 | RFC 1058 | RFC 1081 |
| RFC 1094 | RFC 1112 | RFC 1119 |
| RFC 1123 | RFC 1149 | RFC 1156 |
| RFC 1157 | RFC 1171 | RFC 1208 |
| RFC 1213 | RFC 1267 | RFC 1268 |
| RFC 1304 | RFC 1321 | RFC 1334 |
| RFC 1341 | RFC 1347 | RFC 1350 |
| RFC 1388 | RFC 1436 | RFC 1441 |
| RFC 1442 | RFC 1443 | RFC 1444 |
| RFC 1445 | RFC 1446 | RFC 1447 |
| RFC 1448 | RFC 1449 | RFC 1450 |
| RFC 1451 | RFC 1452 | RFC 1475 |
| RFC 1508 | RFC 1509 | RFC 1520 |
| RFC 1521 | RFC 1526 | RFC 1531 |
| RFC 1550 | RFC 1561 | RFC 1568 |
| RFC 1591 | RFC 1630 | RFC 1661 |
| RFC 1700 | RFC 1701 | RFC 1702 |
| RFC 1707 | RFC 1730 | RFC 1756 |
| RFC 1760 | RFC 1777 | RFC 1778 |
| RFC 1795 | RFC 1823 | RFC 1825 |
| RFC 1831 | RFC 1861 | RFC 1938 |
| RFC 1951 | RFC 1959 | RFC 1960 |
| RFC 2045 | RFC 2046 | RFC 2047 |
| RFC 2048 | RFC 2049 | RFC 2060 |
| RFC 2061 | RFC 2068 | RFC 2093 |
| RFC 2131 | RFC 2234 | RFC 2236 |
| RFC 2246 | RFC 2279 | RFC 2281 |
| RFC 2298 | RFC 2326 | RFC 2364 |
| RFC 2408 | RFC 2516 | RFC 2543 |
| RFC 2549 | RFC 2795 | RFC 2821 |
| RFC 3232 | RFC 4213 | RFC 527 |
| RFC 748 | RFC 792 | RFC 793 |
| RFC 821 | RFC 822 | RFC 826 |
| RFC 854 | RFC 903 | RFC 908 |
| RFC 959 | RFCOMM | RFE |
| RFI | RFID | RFP |
| RFT | RG58 | RG8 |
| RGB | Rhapsody | ribbon cable |
| rib site | rice box | Richard Gabriel |
| Richard Hamming | Richard Korf | Richard P. Feynman |
| Richard P. Gabriel | Richard Stallman | rich object |
| Rich Site Summary | Rich Text Format | RIFF |
| RIGAL | Rigel | right brace |
| right bracket | right-click | right join |
| right outer join | right parenthesis | Right Thing |
| Rijndael | ring network | ring topology |
| Riordan's Internet Privacy Enhanced Mail | RIP | rip |
| ripcording | RIPE | RIPEM |
| ripper | RISC | RISCiX |
| RISC OS | RiscPC | RISC System/6000 |
| Risk Based Testing | RISQL | RITL |
| RJ-11 | RJ-45 | RJE |
| RKM | RL | rl |
| RLaB | RLDRAM | RLE |
| RLF | RLL | rlogin |
| RMAG | RMAIL | RMI |
| RM-ODP | RMON | RMS |
| RNF | ro | roach |
| ROADS | Robert T. Morris | ROBEX |
| RoboHELP | robot | robot exclusion standard |
| robots.txt | robust | Rockwell Protocol Interface |
| Rocky Mountain Basic | rococo | ROCOF |
| roff | ROFL | ROFLMAO |
| rogue | rollback | ROM |
| ROM BIOS | ROME | Rom Kernel Manual |
| room | ROOM Methodology | room-temperature IQ |
| root | root bridge | root directory |
| root mode | root node | Root Normal Form |
| roots | root version | ROSE |
| Rosette | Roskind grammars | rot13 |
| rotary debugger | rotational latency | rotations per minute |
| ROTFL | ROTFLMAO | ROTFLMAOASTC |
| ROTFLOL | round-robin | round tape |
| round-trip time | route | routed |
| route flapping | routeing | routeing domain |
| route leak | router | routine |
| routing | Routing Information Protocol | routing policy |
| Routing Table Maintenance Protocol | row | Row Address Strobe |
| row-level locking | Royal Veterinary and Agricultural University | RPC |
| RPG | RPG-II | RPI |
| RPL | RPL-1 | RPM |
| rpm | RPN | Répondez s'il vous plait |
| RPT | RRL | RRS |
| RS | RS-232 | RS-232C |
| RS-232D | RS-422 | RS-423 |
| RS-449 | RS-485 | RS6000 |
| RS/6000 | RS6K | RSA |
| RSA Data Security, Inc. | RSA encryption | RSCS |
| Réseaux Associés pour la Recherche Européenne | Réseaux IP Européens | RS flip-flop |
| rsh | RSI | RSL |
| RSN | RSS | RSS feed |
| rstat | RSTS/E | RSVP |
| RT-11 | RTBM | RTC++ |
| RT-CDL | RTEE | RTF |
| RTFAQ | RTFB | RTFM |
| RTFM.Humanitarian | RTFS | RTI |
| RTL | RTL/1 | RTL/2 |
| RTM | RTMP | RTOS |
| RTP | RT-PC | RTS |
| RTSA | RTSP | RTT |
| RTTI | RTTY | ru |
| rubi | Ruby | rude |
| RUFL | run | RUNCIBLE |
| run commands | runes | runic |
| run-length encoding | Run Length Limited | run time |
| run-time environment | run-time error | run-time library |
| run-time support | run-time system | Run-Time Type Information |
| ruptime | RUSH | Russell |
| Russell, Bertrand | Russell's Attic | Russell's Paradox |
| rusty iron | rusty memory | RUTH |
| rw | rwho | RWP |
| Rx | RYFM | S |
| s/// | S3 | SA |
| sa | SA-110 | SAA |
| Saber-C | Saber-C++ | SAC |
| SAC-1 | SAC2 | sacadm |
| sacred | SAD | SAD SAM |
| SADT | SAFARI | safe |
| safe mode | safety | safety-critical system |
| saga | sagan | SAGE |
| SAIC | SAID | SAIL |
| SAINT | Saint Andrews Static Language | SAL |
| SALEM | Sales Automation | salescritter |
| Sales Force Automation | S-ALGOL | SALT |
| salt | salt mines | salt substrate |
| SAM | sam | SAM76 |
| Samba | SAME | same-day service |
| SAMeDL | samizdat | SAML |
| Sammet, Jean E. | sample | sample rate |
| sampling | sampling frequency | samurai |
| SAN | sandbender | sandbox |
| Sandman | San Francisco | sanity check |
| Santa Cruz Operation | SAP | SAP AG |
| SAPI | SAR | SAS |
| SASD | SASE | SASI |
| SASL | SASL+LV | SASL-YACC |
| SAS System | SATA | SATAN |
| Sather | Sather-K | satisfiability problem |
| saturation | Saturday-night special | sausage code |
| SAVE | save | save as |
| say | sb | SB AWE32 |
| SBCS | SBD | SBE |
| SBM | SB-Prolog | SBR |
| SBus | SC | sc |
| SCA | SCADA | scag |
| scalability | Scalable Coherent Interface | Scalable Processor ARChitecture |
| Scalable Sampling Rate | Scalable Vector Graphics | scalar |
| SCALLOP | SCAN | scan |
| scan design | SCANDISK | Scan-EDF |
| scanf | Scan-In, Scan-Out | scan line |
| scanner | scanno | scan path |
| scan register | scar tissue code | SCC |
| SCCS | SCEPTRE | Schachter's Hypothesis |
| scheduler | scheduling | Scheduling API |
| Scheduling Application Programming Interface | Schelog | schema |
| Schema Definition Set | Schema Representation language | schematic capture |
| schematic type variable | Schematik | Scheme |
| Scheme84 | Scheme88 | Scheme->C |
| Scheme Library | Scheme-Linda | Scheme Object System |
| Scheme Repository | Scheme-to-C | Schlaer-Mellor |
| Schoonschip | schrödinbug | SCI |
| Science and Engineering Research Council | Scientific Data Systems | Sci-Hub |
| SCL | SCM | SC/MP |
| SCO | Scode | SCOOP |
| SCOOPS | SCOPE | scope |
| Scorpion | Scott-closed | Scott domain |
| SCPI | SCPI Consortium | scram switch |
| SCRAP | scratch | scratch disk |
| scratch monkey | Scratchpad I | Scratchpad II |
| scream and die | Screamer | screaming tty |
| screen | screen blanker | screen dump |
| Screen Peace | screen popping | screen reader |
| screen refresh | screen saver | screen scraper |
| screen server | screen sharing | Screenwrite |
| screw | screwage | scribble |
| Scribe | SCRIPT | script |
| Scriptics | scripting language | scrog |
| SCROLL | scroll | scrollable list |
| scroll bar | scrolling | scrool |
| scrozzle | scruffies | SCSI |
| SCSI-1 | SCSI-2 | SCSI-3 |
| SCSI adapter | SCSI adaptor | SCSI controller |
| SCSI ID | SCSI initiator | SCSI interface |
| SCSI reconnect | SCSI target | ScumOS |
| scuzzy | SD | sd |
| sdcv | SDDI | SDE |
| SDF | SDH | SDI |
| SDK | SDL | SDL 92 |
| SDLC | SDM | SDMS |
| SDP | SDRAM | SDRC |
| SDR-RAM | SDR-SDRAM | SDS |
| SDS 92 | SDS 940 | SDSL |
| SE | se | SEA |
| Seagate Technology | SEAL | search |
| search algorithm | search-and-destroy mode | search engine |
| search problem | search term | Search The Fucking Web |
| SEC | SECC | SECD machine |
| secondary cache | secondary damage | secondary key |
| secondary storage | second generation | second generation computer |
| second generation language | second level cache | second normal form |
| Second-Order Lambda-calculus | second-system effect | sector interleave |
| sector interleaving | sector map | sector mapping |
| Secure File Transfer Protocol | Secure Hash Algorithm | Secure Multipurpose Internet Mail Extensions |
| Secure Shell | Secure Sockets Layer | security |
| Security Administrator's Integrated Network Tool | Security Association | Security Association ID |
| security through obscurity | security vulnerability | SED |
| Sed | SEE | seed |
| seek | seeking | seek time |
| SEESAW | see u see me | SEGA |
| Sega Genesis/MegaDrive | segfault | seggie |
| segment | segmentation | segmentation and reassembly |
| segmentation fault | segmented address space | segv |
| SEI | Seiko RC-4000 | SEL |
| Selective Dissemination of Information | selector | Self |
| Self-Extensible Language | Self Extracting Archive | self-reference |
| selvage | SEM | semantic gap |
| semantic network | semantics | semaphore |
| semi | Semi-Automatic Ground Environment | semicolon |
| semiconductor | Semidetached Mode | SENDIT |
| sendmail | sendmail.cf | Sendmail Inc. |
| Seneca | senior bit | sense |
| sensor | sentence | SE-ODP |
| SEP | separate compilation | SEPIA |
| SEPP | Seque | Sequel |
| sequence | Sequenced Packet Exchange | sequencer |
| Sequent | sequential coding | sequential file matching |
| Sequential Parlog Machine | sequential processing | SERC |
| SERCOS | serial | Serial Advanced Technology Attachment |
| Serial ATA | serial communications | Serial Communications Interface |
| Serial Interface adapter | serial IO chip | serialise |
| serialize | serial line | Serial Line Internet Protocol |
| Serial Line IP | Serial Peripheral Interface | serial port |
| Serial Presence Detect | serial processing | serial processor |
| Serial Storage Architecture | serve | servelet |
| server | serverlet | Server Message Block |
| server-parsed HTML | server room | servers |
| server-side | server-side include | service |
| serviceability | Service Access Point | Service Advertising Protocol |
| Service Discovery Protocol | service-oriented architecture | service provider |
| Service Set Identifier | servlet | session |
| Session Initiation Protocol | session layer | SES/workbench |
| SET | set | set abstraction |
| set associative cache | set complement | set comprehension |
| Set Equation Transformation System | Setext | SETL |
| SETL2 | SETL/E | Set Priority Level |
| SETS | set theory | set-top box |
| SEUS | seven layer model | Seven-Segment Display |
| SEX | sexadecimal | sex changer |
| SEXI | Seymour Cray | SFA |
| SFBI | SFD-ALGOL | SFFA |
| SFL | SFLV | sFTP |
| sg | SGCP | SGI |
| SGML | sgmls | SGML Tagger |
| SGRAM | sh | SHA |
| SHACO | SHADOW | shadowing |
| shadow ram | shallow binding | shambolic link |
| Shape_VC | ShapeTools | shar |
| sharchive | sharding | Share and enjoy! |
| shared memory | shared memory system | Shared Time Repair of Big Electronic Systems |
| shareware | shar file | sharp |
| Sharp APL | S-HDSL | shebang |
| SHEEP | shelf | shelfware |
| SHELL | shell | shell out |
| shell script | shell variable | shielded twisted pair |
| SHIFT | Shift In | shift left logical |
| Shift Out | shift right logical | shim |
| shitogram | Shockwave | shockwave |
| Shockwave Flash | shopbot | short card |
| Short Code | shortcut | Shorten |
| shortest job first | Short Message Service | shotgun debugging |
| shoulder surfing | shovelware | Show-And-Tell |
| showstopper | shriek | shrug report |
| sht | SHTF | shtml |
| Shub-Internet | SHUG | Shugart, Alan F. |
| Shugart Associates | Shugart Technology | SI |
| si | SIA | SIBO |
| SICL | SICS | SICStus Prolog |
| sidecar | side-effect | Siemens |
| Siemens Nixdorf Informationssteme, AG | Sierra | SIFT |
| SIG | Sig | sig |
| sig block | SIGBUS | SIGhyper |
| SIGLA | SIGMA | SIGNAL |
| signal | signalling rate | Signalling System 7 |
| signal-to-noise ratio | signature | sig quote |
| sig virus | SIL | Silage |
| silicon | silicon chip | Silicon Graphics, Inc. |
| Siliwood | silly walk | silo |
| Silver Book | silver bullet | SIM |
| SIMAN | SimCity | SimCity 2000 |
| SIMD | Similix | SIML/I |
| SIMM | Simone | Simonyi, Charles |
| SIMPAC | SIMPAS | SIMPL |
| SIMPLE | Simple Actor Language | Simple Authentication and Security Layer |
| Simple Gateway Control Protocol | Simple Mail Transfer Protocol | simple multicast protocol |
| Simple Network Management Protocol | Simple Network Management Protocol version 2 | Simple Network Paging Protocol |
| Simple Object Access Protocol | simplex | simplex method |
| simplex printer | SIMPL/I | Simplified Multicast Routing Protocol |
| SIMPL-T | SIMSCRIPT | SIMSCRIPT I.5 |
| SIMSCRIPT II.5 | simship | SIMULA |
| SIMULA 67 | SIMULA I | simulate |
| simulated annealing | Simulating Digital Systems | simulation |
| SIMulation ANalysis | Simulation Language for Alternative Modeling | Simulation Oriented Language |
| Simultaneous Engineering Environment | Simultaneous Peripheral Operation On-Line | simultaneous shipment |
| Simware, Inc. | SINA | since time T equals minus infinity |
| Sinclair, Clive | Sinclair PC200 | Sinclair Radionics |
| Sinclair Research | sine wave | single assignment |
| single assignment language | single-attached | Single Connection Attach |
| Single Connector Attachment | Single Data Rate Random Access Memory | Single Data Rate Synchronous Dynamic Random Access Memory |
| Single Document Interface | single-duplex | Single Edge Contact |
| Single Edge Contact Cartridge | Single Edge Processor Package | single-electron transistor |
| Single Electron Tunneling | Single Electron Tunneling Technology | single ended |
| Single Image Random Dot Stereogram | single inheritance | Single In-line Memory Module |
| Single Inline Pin Package | Single Instruction Multiple Data | Single Instruction/Multiple Data |
| Single-line Digital Subscriber Line | single-page web application | Single-pair High Speed Digital Subscriber Line |
| single program/multiple data | single quote | single sign-on |
| single sourcing | single static assignment | singleton variable |
| Single Virtual Storage | siod | SIP |
| SIPB | SIPLAN | SIPP |
| SI prefix | Siprol | SIR |
| SIRDS | Siri | SIRTS |
| SISAL | sit | SITBOL |
| site map | sitename | SIxteen Bit Organisers |
| sj | sk | Skel-ML |
| Sketchpad | S/Key | Skill |
| Skim | SkipJack | SKOL |
| skolemisation | S-K reduction machine | skrog |
| SKsh | SKU | skulker |
| SL | sl | SL5 |
| slack | slackware | SLAM |
| SLANG | S-Lang | slap on the side |
| slash | slashdot effect | slave tty |
| SLD resolution | sleep | SLIB |
| Slide | sliding-window | SLIM |
| slim | Slingshot | SLIP |
| SlipKnot | SLIPS | SLiRP |
| SLLIC | slog | Sloop |
| slop | slopsucker | slosh |
| Slot 1 | Slot 2 | Slot A |
| slurp | sm | smail |
| SMALGOL | SMALL | Small Business Edition |
| Small-C | Small Computer System Interface | small-office/home-office |
| Small Outline DIMM | Smalltalk | Smalltalk-80 |
| Smalltalk/V | SmallVDM | SMALLWORLD |
| SmallWorld | Smarandache logic | SMART |
| smart | Smart Battery Data | smart card |
| Smartdrive | SMARTdrv | smart terminal |
| smash case | smash sum | smash the stack |
| SMB | smbclient | smblib |
| SMBus | SMCC | SMDS |
| SMG | SMI | SMIL |
| smiley | smilies | S-MIME |
| SML | SML# | sml2c |
| SML/NJ | SMM | SMNP |
| smoke | smoke and mirrors | smoke-emitting diode |
| smoke test | smoking clover | SMoLCS |
| SMOP | SMP | SMPS |
| SMPT | SMRP | SMS |
| SMT | SMTP | smug report |
| smurf | sn | SNA |
| snacc | snaf | SNAFU principle |
| snag | snail mail | SNAP |
| snap | snap dump | Snappy |
| Snappy Video Snapshot | snarf | snarf & barf |
| snarf down | snark | sneakernet |
| sneck | snert | SNI |
| Sniff | sniff | sniffer |
| snivitz | SNMP | SNMP agent |
| SNMPv2 | SNOBOL | SNOBOL2 |
| SNOBOL3 | SNOBOL4 | SNOOPS |
| SNPP | SNR | S/N ratio |
| SNR bandwidth product | SO | so |
| SO 2 | SOA | SOAP |
| SOAR | social engineering | social network |
| social networking | social science number | socket |
| Socket 1 | Socket 2 | Socket 3 |
| Socket 370 | Socket 4 | Socket 5 |
| Socket 6 | Socket 7 | Socket 8 |
| SOCKS | SOCRATIC | SODA |
| SODAS | SO-DIMM | Sod's Law |
| SOE | SoftBench | soft boot |
| softcopy | Softlab | soft link |
| SoftModem | SoftVelocity Inc. | software |
| Software AG | software audit | Software BackPlane |
| software bloat | Software bus | software copyright |
| Software Description Database | Software Developers Kit | software development life cycle |
| software enabling | software engineering | Software Engineering Environment |
| software handshaking | software interrupt | Software in the Public Interest, Inc. |
| software laser | software law | software life-cycle |
| Software Method | Software Methodology | software metric |
| software patent | software piracy | software pirate |
| Software Practice and Experience | Software Productivity Centre | Software Publishing Certificate |
| Software Publishing Corporation | software reliability | software rot |
| software theft | Software through Pictures | software tool |
| Software Verification Research Centre | Software Writer's Language | softwarily |
| softy | SOH | SOHIO |
| SoHo | SOIF | SOJ |
| SOL | Solaris | SOLID |
| solid state | Solid State Disk | solid-state storage device |
| SOLO | solution | Solution Based Modelling |
| Solve | SOM | Somar DumpAcl |
| Somar Software | some random X | Sonata |
| SONET | Sony Playstation | SORCERER |
| sorcerer's apprentice mode | sort | sorting |
| SOS | sound | Sound Blaster |
| sound card | soundex | soundness |
| source | source code | source code control |
| source code escrow | source code management | source language |
| source-level debugger | source of all good bits | source package |
| source route | source routing | southbridge |
| SP | SP2 | SP/2 |
| space | space bar | space-cadet keyboard |
| space complexity | space key | space leak |
| SPACEWAR | SPADE | spaghetti code |
| spaghetti inheritance | spaghetti with meatballs code | spam |
| spamdex | spamming | spanning tree algorithm |
| SPAR | SPARC | SPARC International, Inc. |
| SPARCStation | SPARCstation 10 | SPARCstation 20 |
| SPARCsystem 4 | SPARC Xterminal 1 | SPARK |
| SPARK Annotation Language | SPARKS | sparse |
| Spatial Technologies | spawn | SPC |
| SPD | SPDL | SPE |
| Speakeasy | speaker | SPEC |
| Spec | spec | SPECbase_fp92 |
| SPECbase_int92 | SPECbaserate | SPEC CFP92 |
| SPEC CINT92 | SPECfp92 | SPECIAL |
| special-case | Special Interest Group | specialisation |
| specification | specific markup | SPECint92 |
| SPECmark | SPECmark89 | SPECOL |
| SPEC rate | SPECrate_base_fp92 | SPECrate_fp92 |
| SPECrate_int92 | SPEC ratio | Spectral Band Replication |
| Spectrum | speculative evaluation | speculative execution |
| Speech Application Programming Interface | speech recognition | Speech Recognition Application Program Interface |
| speech synthesis | SPEED | Speedcoding |
| Speedcoding 3 | SPEEDEX | speedometer |
| spell | spelling flame | Sperry Corporation |
| Sperry Univac | SPG | SPGA |
| SPI | Spice Lisp | SPID |
| spider | Spiderweb | spiffy |
| spike | spill | spim |
| spin | spin control | spinner |
| spiral model | SPIT | SPITBOL |
| spiware | SP/k | SPL |
| SPL/1 | SPLash! | splash screen |
| splat | SPL/I | SPLINTER |
| split | Split-C | splot |
| SPLX | SPM | SPMD |
| SPML | spod | spoiler |
| sponge | spoo | spoof |
| spoofing | spooge | SPOOL |
| Spool | spool | spooler |
| spool file | SpoolView | spray |
| spreadsheet | spread spectrum communications | SPRING |
| SPRINT | Sprintnet | Sprite |
| sprite | sprocket feed | SPS |
| SPSS | SPSS, Inc. | SPUR |
| SPX | spx | spyware |
| SQE | SQL | SQL2 |
| SQL3 | SQL Access Group | SQL/DS |
| SQL Module Language | SQL Server | SQL server |
| SQLWindows | SQR | SQRIBE |
| Square | square-headed boyfriend | square-headed girlfriend |
| square tape | Squeak | Squiggol |
| squirt the bird | SR | sr |
| SRAM | SRAPI | S. R. Bourne |
| SRC Modula-3 | SRDL | SR flip-flop |
| SRI | SRI International | SRL |
| SRP | SS7 | SSA |
| SSADM | SSBA | SSD |
| SSE | SSE-2 | ssh |
| SSH File Transfer Protocol | SSI | SSID |
| SSII | SSL | S/SL |
| SSLeay | SSMA | SSO |
| SSR | st | ST-506 |
| STAB | STAB-11 | stable |
| stable sort | STAC | stac compression |
| stack | Stack Environment Control Dump machine | stack frame |
| stacking order | stack loader | stack overflow |
| stack pointer | stack puke | stack traceback |
| STAGE2 | Staggered Pin Grid Array | staircase |
| staircasing | stale pointer bug | Stalker |
| stalker_portal | stalker_portal/c/version.js | Stallman, Richard M. |
| stand-alone | standard | Standard Commands for Programmable Instruments |
| Standard d'Echange et de Transfert | standard deviation | standard for robot exclusion |
| Standard for the exchange of product model data | Standard Generalised Markup Language | Standard Generalized Markup Language |
| standard input/output | Standard Instrument Control Library | standard interpretation |
| standard I/O | Standard Lisp | Standard ML |
| Standard ML of New Jersey | Standard Operating Environment | standard semantics |
| Standard Widget Toolkit | St Andrews Static Language | Stanford Artificial Intelligence Laboratory |
| Stanford Artificial Intelligence Language | Stanford Research Institute | Stanford University |
| STAPLE | Staple | STAR 0 |
| StarBurst | StarDict | StarDict console version |
| StarLISP | StarMOD | star network |
| Starset | STARSYS | start bit |
| start of authority | Start Of Header | Start Of Text |
| start tag | stat | state |
| state diagram | stateless | state machine |
| statement | state transition diagram | State University of New York |
| static | statically typed | static analysis |
| static database management system | static DBMS | static link |
| static method | static nested scope | static nested scoping |
| static RAM | static random-access memory | static scope |
| static typing | static variable | Station Management |
| Statistical Analysis System | Statistical Package for the Social Sciences | statistical time division multiplexing |
| statistics | StatMUX | status |
| STB | STD | STD 1 |
| STD 13 | STD 15 | STD 2 |
| STD 9 | stderr | stdin |
| stdio | stdio.h | STDM |
| stdout | STDWIN | steam-powered |
| Steelman | steganography | stemmer |
| stemming | STENSOR | STEP |
| Stephen Cole Kleene | Stephen Jobs | Stephen Kleene |
| stepper motor | Stepstone Corp | stepwise refinement |
| stereogram | Sterling Software, Inc. | Steve Jobs |
| Steve Russell | Steve's Shell | Steve Wozniak |
| STFT | STFU | STFW |
| Sticks&Stones | sticky analysis | sticky bit |
| sticky content | stiffy | STIL |
| STING | STk | STMP |
| stochastic | stock-keeping unit | STOIC |
| stomp on | STONE | Stone Age |
| stone knives and bearskins | Stoneman | stop bit |
| stoppage | storage | Storage Allocation and Coding Program |
| Storage Area Network | Storage Management Services | storage media |
| store | store and forward | stored procedure |
| storm | Story of Mel | STP |
| StP | STP4 | Strachey, Christopher |
| Strand | Strand88 | Stratus |
| Strawman | STREAM | stream |
| streaming | Streaming SIMD Extensions | stream-oriented |
| STREAMS | strength reduction | STRESS |
| stress testing | strict | strict evaluation |
| strided | string | String EXpression Interpreter |
| stringification | stringify | stringly typed |
| STring Oriented Interactive Compiler | String Oriented Symbolic Language | String PRocessING language |
| string reduction | stripe | stripe set |
| striping | STROBES | stroke |
| StrongARM | strongly connected component | strongly typed |
| strong typing | Stroustrup, Bjarne | struct |
| structural recursion | structured analysis | Structured Analysis and Design Technique |
| structured design | structure diagram | structured language |
| structured programming | Structured Query Language | Structure of Management Information |
| strudel | STRUDL | STSC APL |
| stty | stub | stub network |
| stubroutine | STUDENT | Student PL/I |
| studly | studlycaps | Stuffit |
| Stupids | stupid-sort | Sturgeon's Law |
| STX | style | su |
| SUB | subband encoding | subclass |
| subject | subject index | subject-oriented programming |
| sublanguage | subnet | subnet address |
| subnet mask | subnet number | subroutine |
| subscribe | Subscriber Identity Module | subscribing |
| Subset-Equational Language | Substitute | substrate |
| subtype | subtyping | SuccessoR |
| successor | sucking mud | Sue |
| sufficiently small | SUGAR | suicideware |
| SUIF | suit | suitably small |
| Suite Synthetique des Benchmarks de l'AFUU | sum | Summary Object Interchange Format |
| SUMMER | SUMMER SESSION | sum of products |
| sum of products type | Sun | Sun-2 Workstation |
| Sun-3 Workstation | Sun-4 Workstation | sun lounge |
| Sun Microsystems, Inc. | SunOS | sunspots |
| sun-stools | SunView | SUNY |
| SUPER | Super 7 | Superbrain |
| SuperBrain II | superclass | supercombinators |
| supercompilation | supercomputer | SuperDrive |
| superhighway | SuperJanet | SUPERMAC |
| super minicomputer | SuperPaint | Super Pascal |
| superpipelined | superprogrammer | superscalar |
| super source quench | SuperTalk | superuser |
| Super VGA | Super Video Graphics Adapter | Super Video Graphics Adaptor |
| Super Video Graphics Array | supervisor mode | Supervisory Control and Data Acquisition |
| SuperZap | Supplementary Ideographic Plane | support |
| supremum | Sure | surfing |
| SURGE | surjection | surjective |
| surrogate key | suspension | Suzie COBOL |
| sv | SVC | SVG |
| SVGA | SVGA monitor | SVID |
| S-Video | SVR4 | SVRC |
| SVS | swab | SWAG |
| swap | swap file | swapped in |
| swapped out | swapping | swap space |
| Sweden | SweetLambda | swf |
| Swing | SWI-Prolog | Swiss Army Code |
| switch | Switched Multimegabit Data Service | switched virtual circuit |
| switched virtual connection | switching | switching hub |
| switch statement | swizzle | SWL |
| SWT | swung dash | sy |
| Sybase, Inc. | Sybase SQL Server | SYDEL |
| SYGMA | SYLK | syllogism |
| Sylvan | Symantec | SYMBAL |
| SymbMath | SYMBOLANG | Symbolic Assembler Program |
| SYMBOLIC ASSEMBLY | Symbolic Automatic INTegrator | symbolic inference |
| Symbolic Link | symbolic link | symbolic logic |
| Symbolic Mathematical Laboratory | symbolic mathematics | Symbolic Optimal Assembly Program |
| Symbolic Optimum DEUCE Assembly Program | Symbolics, Inc. | Symbol Manipulation Program |
| symlink | symmetric | symmetric key cryptography |
| Symmetric LISP | symmetric multiprocessing | symmetric multiprocessor |
| Symphony | SYMPL | SYN |
| sync | Synchronized Multimedia Integration Language | synchronous |
| Synchronous Data Link Control | Synchronous Digital Hierarchy | Synchronous DRAM |
| Synchronous Dynamic Random Access Memory | Synchronous Graphics RAM | Synchronous Graphics Random Access Memory |
| Synchronous idle | synchronous key encryption | Synchronous Optical NETwork |
| syncronous | synflood | synonym ring |
| syntactic salt | syntactic sugar | syntax |
| Syntax-Case | syntax directed translation | Syntax/Semantic Language |
| syntax tree | synthesis | Synthesizer Specification Language |
| sypware | SyQuest Technology, Inc. | sysadmin |
| sysape | Sysdeco Mimer AB | sys-frog |
| SYSKEY | SYSLISP | sysop |
| Sysplex | sysprog | system |
| System/360 | System/370 | System 5 |
| System 7.5 | System Account Manager | system administration |
| system administrator | system analysis | system analyst |
| system board | system call | system catalog |
| System Control Language | Systeme International | System F |
| System International | system management | System Management Bus |
| System Management Mode | System Management Server | system manager |
| system mangler | system operator | System Product Interpreter |
| system programming language | System R | Systems Administrators Guild |
| systems analysis | Systems Analysis Definition | systems analyst |
| Systems Application Architecture | Systems Development Life Cycle | systems jock |
| Systems Network Architecture | system software | systems operator |
| systems programmer | systems programming | system testing |
| system unit | System V | System V Interface Definition |
| Système International | Système International d'Unités | systolic array |
| SysVile | sz | T |
| T1 | T1 line | T1 rate |
| T3 | T3 line | TA |
| TAA | TAB | table |
| table locking | tablespace | TABLET |
| TABLOG | tab-separated values | TABSOL |
| Tabulating Machine Company | TAC | TACL |
| TACPOL | Tactile User Interface | tag |
| Tagged Image File Format | tagged queueing | tagged types |
| tag name | tail call optimisation | tail call optimization |
| tail circuit | tail recursion | tail recursion modulo cons |
| tail recursion optimisation | tail-strict | TAL |
| TALE | Taligent | talk |
| talk bomb | talker system | talk mode |
| TALL | tall card | Tandem Application Language |
| Tandem Computers | Tandy | Tanenbaum, Andrew |
| Tangible User Interface | tanked | TANSTAAFL |
| TAO | TAOS | TAP |
| tap | tape | tape archive |
| tape drive | tape head | Tape Operating System |
| TAPI | tar | tar and feather |
| tarball | targa | Targa Graphics Adapter |
| target | Target-Machine Description Language | TARTAN |
| taskbar | Task Control Block | task scheduling |
| TASM | TASS | taste |
| tatar | tau | tautological probability |
| tautological set | tautology | TAWK |
| Taxis | tayste | taz |
| TB | TBF | TBIL |
| TBK | Tbl | tc |
| T-carrier system | TCB | TCGS |
| TC/IX | Tcl | Tcl Consortium |
| tcl-debug | Tcl-DP | tclhttpd |
| TclX | TCM | TCO |
| Tcode | TCOL | TCOL.Ada |
| TCP | TCPIP | TCP/IP |
| tcsh | Tcsim | TCVN 5773 |
| TCVN 6056 | td | TDD |
| TDEL | TDF | TDFL |
| TDI | TDM | TDMA |
| TDR | Teamwork | Technical/Office Protocol |
| Technion | technology | Technology Enabled Relationship Manager |
| Technology of Object-Oriented Languages and Systems | TechRef | TECO |
| tee | TEI | telco |
| TELCOMP | Telecommunication Display Device | Telecommunications Device for the Deaf |
| Telecommunications Industry Association | telecommuting | teledildonics |
| telegraphy | telematics | TelEnet |
| TELEPAC | Telephone Application Program Interface | telephony |
| Telephony Application Programming Interface | Telephony User Interface | Telerat |
| Telescope User Interface | Telescript | Teletype |
| teletype | Teletype Corporation | teletypewriter |
| TeleUSE | television | Television Interface Adapter |
| TELNET | Telocator Alphanumeric Protocol | Telon |
| TELOS | TELSIM | template |
| template code | template wizard | TEMPLOG |
| TEMPO | Tempo | temporal database |
| temporal logic | Tempura | Ten15 |
| tendinitis | TenDRA | ten-finger interface |
| tennis elbow | tense | tensor product |
| tenured graduate student | tera- | terabyte |
| teraflop | teraflop club | TERM |
| TERMAC | termcap | terminak |
| terminal | Terminal Access Controller | Terminal Adapter |
| Terminal Adaptor | terminal brain death | terminal emulation |
| terminal emulator | terminal illness | terminal junkie |
| terminal node | Terminal Oriented Real Time Operating System | Terminal Oriented Social Science |
| Terminal Productivity eXecutive | terminal server | Terminal User Interface |
| Terminate and Stay Resident | termination analysis | terminator |
| term rewriting system | Terms Of Service | ternary |
| terpri | terrabyte | Terse |
| test | test coverage | test-driven development |
| testing | TET | TeX |
| TeX-78 | TeX-82 | Texas Instruments |
| Texinfo | TeX point | text |
| text-based | text editor | Text Encoding Initiative |
| text file | Text Processing Utility | Text Reckoning And Compiling |
| text segment | Text To Speech | Textual User Interface |
| texture | tf | TFDL |
| TFT | TFTP | tg |
| TGA | T-gen | TGS-II |
| TGS Systems | tgz | th |
| thanks in advance | That's not a bug, that's a feature! | T.H.E |
| The Cuckoo's Egg | The Dojo Toolkit | The Force |
| The Internet Account | The MathWorks, Inc. | The Metadata Company |
| The Microsoft Network | The Mythical Man-Month | The Network |
| THEO | theology | The Open Group |
| theory | theory change | The Real-Time Operating System Nucleus |
| There's More Than One Way To Do It | Theseus | The story of Mel |
| The story of Mel, a Real Programmer | The World Of Cryton | the X that can be Y is not the true X |
| thicket | thick Ethernet cable | thick film dielectric electroluminescence |
| thicknet | thin client | thin Ethernet cable |
| ThingLab | Think C | Thinking Machines Corporation |
| thinko | thinnet | third generation computer |
| third generation language | third normal form | This can't happen |
| this dictionary | This time, for sure! | thn |
| Thomas | thrash | thrashing |
| thread | threaded | threaded code |
| threading | Thread Language Zero | thread-safe |
| three-finger salute | three-letter acronym | three-tier |
| throughput | thud | Thumb |
| thumb | thumbnail | Thunderbird |
| thunk | TIA | tick |
| TickIT | Tickle | tickle a bug |
| tick-list features | TIFF | tiger team |
| tight loop | tilde | TILE Forth |
| Tim Berners-Lee | time bomb | time complexity |
| Time Complex Simulator | time division multiple access | time division multiplexing |
| Time Domain Reflectometer | timeout | time quantum |
| time-sharing | Time Sharing Option | time shifting |
| Time Simulator | time sink | time slice |
| times-or-divided-by | time T | Time to Live |
| time zone | Tim Peters | Timsort |
| TINC | Tinman | tinman+ |
| TINT | tint | Tiny |
| Tiny BASIC | Tiny Basic Interpreter Language | Tiny Clos |
| Tiobe | TIP | TIPL |
| tip of the ice-cube | tired iron | tits on a keyboard |
| tj | Tk | tk |
| TK-90X | TK-95 | T. Kohonen |
| TK!Solver | TL0 | TL1 |
| TLA | TLAs | TLB |
| TLD | TLI | TL/I |
| T Lisp | TLS | TLTR |
| TM | tm | TMDL |
| TMG | TMRC | TMRCie |
| TMS 9900 | tn | tn3270 |
| TNC | TNSTAAFL | TNX |
| TNXE6 | to | to a first approximation |
| toast | toaster | toasternet |
| to a zeroth approximation | toggle | TOK |
| token | token bus | token ring |
| Tomcat | TomeRaider | Tom Knight |
| tone | Tony Hoare | tool |
| toolbar | toolbook | Toolbuilder |
| Tool Builder Kit | Tool Command Language | TOOLS |
| toolsmith | TOP | top-down design |
| Top-Down Model | topic drift | topic group |
| topic map | topic thread | top-level domain |
| topology | TOPS-10 | TOPS-20 |
| Tornado | Toronto Euclid | torrent |
| TORTOS | TOS | Toshiba Corporation |
| TOSS | total function | totally ordered |
| totally ordered set | total ordering | toto |
| touchpad | touch screen | tourist |
| tourist information | Towers of Hanoi | Tower Technology Corporation |
| toy | Toy/Ada | toy language |
| Toyohashi University Parallel Lisp Environment | toy problem | toy program |
| tp | TPA | TPF |
| TP/IX | TPL | TPO |
| TPS | tptc | TPU |
| TPX | tr | TRAC |
| traceroute | trace scheduling | track |
| track ball | tracker ball | tracking |
| tracking cookie | tracking file | trackpad |
| TrackPoint | tractor feed | TrafoLa |
| Trafola-H | trampoline | TRANDIR |
| TRANQUIL | TRANS | transaction |
| Transaction Application Language | Transaction Processing Facility | transceiver |
| TRANSCODE | transducer | transfer |
| transfer full | transfer none | transfer of control |
| transfer rate | transfer syntax | transfinite induction |
| transformation | transient | Transient Program Area |
| transistor | Transistor-Transistor Logic | TRANSIT |
| transition ad | transitive | transitive closure |
| transit network | Translation Look-aside Buffer | Transmission Control Protocol |
| transparent | transparent audio coding | Transport Driver Interface |
| transport layer | Transport Layer Interface | Transport Layer Security protocol |
| Transport Level Interface | Transport Service Access Point | transputer |
| TRANS-USE | trap | trap door |
| trap-door function | trash | Trash-80 |
| traveling salesman problem | travelling salesman | travelling salesman problem |
| traversal | traverse | traversing |
| trawl | tree | tree-killer |
| tree shaking | TREET | TREETRAN |
| Tree Transformation Language | treeware | Trellis |
| Trellis Code Modulation | Trident | trigger |
| trigger finger | TRIGMAN | trillion |
| Trilogy | triple DES | tri state |
| trit | Triton | Triton II |
| Triton VX | Trivial File Transfer Protocol | TRO |
| troff | troglodyte | troglodyte mode |
| trojan | Trojan horse | Trojan:Win32/Ymacco.AAB8 |
| TROLL | troll | TRON |
| tron | Trouble Came Back | TRS |
| TRS-80 | Truchet point | True BASIC |
| true colour | true hacker | TRUENAME |
| TrueType | Trumpet | TRUSIX |
| truth table | TS | TSAP |
| TSEE | TSIA | Tsim |
| TSL-1 | TSO | TSP |
| TSR | TSV | tt |
| TTD | TTFN | TTL |
| TTS | tty | TTYL |
| TUB | TUBA | tube |
| tube time | Tuckals | TUI |
| Tukey, John | Tuki | tunafish |
| tune | tunneling | tunnelling |
| Tunny Emulator | TUPLE | tuple |
| tuple calculus | Tuple Space Smalltalk | tupling |
| Turbo C | Turbo C++ | Turbo Debugger |
| turbo nerd | Turbo Pascal | Turbo Prolog |
| Turing | Turing Machine | Turingol |
| Turing Plus | Turing tar-pit | Turing test |
| turist | TURN | turn-key |
| turtle graphics | TUTOR | Tuxedo |
| TV | tv | tw |
| TWAIN | tweak | tweening |
| tweeter | TWENEX | Twente Compiler Generator System |
| Twentel | twiddle | TWIG |
| twilight zone | twink | twinning |
| Twin Vector Quantization | twip | twirling baton |
| twisted pair | twisted pair only | Twitter |
| twm | two-binary, one-quaternary | twonkie |
| two-phase commit | twos complement | two-to-the-N |
| two-valued logic | TX-0 | TXL |
| TYMCOM-X | TYMNET | Tymshare, Inc. |
| type | type-ahead | type-ahead search |
| type assignment | type class | typed lambda-calculus |
| TypedProlog | typeface | type inference |
| type scheme | typo | typographical error |
| typography | TYPOL | typo squatter |
| tyt | TZ | tz |
| ua | UAN | UART |
| UAT | UAW | UBASIC |
| UBD | ubiquitous computing | uC++ |
| UCB | UCHO | U-Code |
| UCP | UCS | UCSD Pascal |
| UCS transformation format | UCX | udb |
| UDDI | UDF | UDMA |
| UDP | uemacs | UFO |
| UFO bug | ug | UGLIAC |
| UHELP | UI | uid |
| UIDL | UIL | UIMS |
| UIMX | UIS | uk |
| UKC | UKERNA | UKUUG Ltd. |
| ULCC | Ulm's Modula-2 System | ULP |
| Ultra64 | Ultra-ATA | Ultra DMA |
| Ultra-SCSI | Ultrix | um |
| UMB | UMB Scheme | UMDL |
| UML | uML | UMTS |
| unary | unary operator | UNC |
| UNCL | UNCOL | uncompression |
| uncountable | uncurry | uncurrying |
| undefined | undefined external reference | underflow |
| Undernet | underscore | under the hood |
| undocumented feature | U-NET Limited | unfold |
| unfold/fold | UNI | unicast |
| Unicode | UniCOMAL | Unicorny |
| unicos | Uniface | unification |
| Unified Han | Unified Modeling Language | unifier |
| UNIFORM | Uniform Naming Convention | Uniform Resource Citation |
| Uniform Resource Locater | Uniform Resource Locator | Uniform Resource Name |
| Uniform Resource Number | Unify | unify |
| Unify Corporation | Unihan | uninstaller |
| uninteresting | Uninterruptible Power Supply | union |
| Unipalm Group plc | Unipress Software, Inc. | uniprocessor |
| UNIQUE | Unique ID Listing | unique key |
| unique sales point | Unir Tech | UNISAP |
| Unisys Corporation | United Kingdom Education and Research Networking Association | United Kingdom Unix Users Group |
| United Technologies Research Cente | Unit Separator | unit testing |
| UNITY | Univac | Universal algebra |
| Universal Asynchronous Receiver/Transmitter | Universal Character Set | Universal Communications X |
| Universal Computer Protocol | Universal Debugger | Universal Description, Discovery, and Integration |
| Universal Disk Format | Universal Naming Convention | universal quantifier |
| Universal Resource Identifier | Universal Resource Locator | Universal Serial Bus |
| universal thunk | Universal Time | Universal Time Coordinated |
| universe of discourse | University of Arizona | University of California at Berkeley |
| University of Durham | University of East London | University of Edinburgh |
| University of Hawaii | University of Iceland | University of London Computing Centre |
| University of Michigan | University of Michigan Digital Library Project | University of Minnesota |
| University of Nijmegen | University of Pennsylvania | University of Tasmania |
| University of Twente | Unix | Unix box |
| Unix brain damage | Unix conspiracy | Unix International |
| Unixism | Unix man page | Unix manual page |
| Unix System V | Unix to Unix Copy | UnixWare |
| Unix weenie | Unix wizard | Unlicense |
| unnormalised | unproto | unshar |
| unshielded twisted pair | unstable | unswizzle |
| until | untyped | unwind-protect |
| unwind the stack | UN*X | unzip |
| up | uparrow | UPenn |
| upgradability | upgrade | upgradeability |
| upload | UPMAIL Tricia Prolog | upper bound |
| Upper Layer Protocol | upper memory block | Upper Side-Band modulation |
| Upright Database Technology AB | UPS | upstream |
| upthread | upward closure | Uranus |
| urban legend | URC | urchin |
| URI | URL | URL forwarding |
| URL redirection | URN | URouLette |
| US | us | usability |
| USAModSim | usa.net | US-ASCII |
| USB | USB 2.0 | USB Adapter Card Support |
| USB drive | USE | Usenet |
| Usenet news | Usenetter | USENIX |
| user | user acceptance testing | user base |
| User Brain Damage | User Datagram Protocol | user experience |
| user-friendly | user id | user identifier |
| user interface | user interface copyright | User Interface Language |
| user name | User Network Interface | user-obsequious |
| user-unctuous | Use the Source Luke | USG Unix |
| usim | USL | USP |
| USR | usr | US Robotics |
| U.S. Robotics, Inc. | USSA | UTC |
| UTF | UTF-8 | utility |
| utility-coder | utility program | utility software |
| UTOPIST | UTP | UTRC |
| UTSL | uucp | UUCPNET |
| uudecode | uuencode | UUNET PIPEX |
| UUPC | UX | uy |
| uz | V | V.10 |
| V.11 | V.17 | V.21 |
| V.22 | V.22bis | V.23 |
| V.24 | V.25 | V.25 bis |
| V.27 ter | V.28 | V.29 |
| V.32 | V.32bis | V.32ter |
| V.34 | V.35 | V.42 |
| V.42bis | V.90 | V.91 |
| va | vacuum tube | vadding |
| VAL | Valencia Simple Tasker | valency |
| Valid | validation | value |
| Value Added Network | value added reseller | value added retailer |
| valve | vampire tap | VAN |
| vanilla | vanity domain | vannevar |
| Vannevar Bush | vaporware | vapourware |
| VAR | var | varchar |
| variable | Variational Graphics eXtended | VAX |
| VAX DOCUMENT | VAXectomy | VAXen |
| vaxherd | vaxism | VAX MIPS |
| vaxocentrism | VAXset | VAXstation |
| VAX/VMS | VB | VBA |
| vbell | VBScript | vbx |
| vc | VCC filtering | VCD |
| VCID | VCL | VCODE |
| VCPI | VCR | vdiff |
| VDL | VDM | VDM++ |
| VDM-SL | VDSL | VDT |
| VDU | vdx | ve |
| vector | Vector C | vector font |
| vector graphics | vector processor | vector space |
| VECTRAN | VEE | veeblefeetzer |
| veeblefester | veeblefetzer | VEL |
| Vendor Independent Messaging | ventilator card | Ventura Publisher |
| Venus flytrap | verbage | verbiage |
| Verdi | verification | Verilog |
| Verilog SA | Veronica | Versa Module Europa |
| version | Version 7 | vertical application |
| vertical bar | vertical encoding | vertical loop combination |
| vertical microcode | Vertical Redundancy Check | vertical refresh rate |
| vertical scan rate | Very Efficient Speculative Parallel Architecture | Very high bit-rate Digital Subscriber Line |
| Very Large Database | Very Large Memory | Very Large Scale Integration |
| Very Long Instruction Word | Very Small Aperture Terminal | VESA |
| VESA Local Bus | VESPA | V.FAST |
| VFAT | V.FC | vg |
| VGA | VGQF | vgrep |
| VGX | VHDL | VHE |
| VHLL | vhost | VHS |
| vi | VIC-20 | victim cache |
| video | video adaptor | video card |
| Video Compact Disc | video compression | video conference |
| video conferencing | video dial tone | video display standard |
| video display terminal | Video Electronics Standards Association | Video Graphics Adapter |
| Video Graphics Adaptor | Video Graphics Array | video memory |
| Video on Demand | video RAM | video random-access memory |
| video terminal | videotex | Vienna Definition Language |
| Vienna Definition Method | Vienna Development Method | Vienna Development Method Specification Language |
| Vienna Fortran | Vietnamese | viewer |
| ViewPoints | Views | VIF |
| Vi Improved | VIM | Vincennes LISP |
| vines | Vine Technology | Vint Cerf |
| Vinton Cerf | Viola | virgin |
| virgule | Viron | virtual |
| virtual 86 mode | virtual address | virtual cache |
| virtual circuit | Virtual Circuit Identifier | virtual connection |
| Virtual Control Program Interface | Virtual Device Driver | Virtual Device Location |
| virtual disk | Virtual Home Environment | virtual host |
| Virtual LAN | Virtual Loadable Module | Virtual Local Area Network |
| Virtual Machine | virtual machine | Virtual Machine/Conversational Monitor System |
| Virtual Machine Environment | Virtual Machine/ESA | virtual machine manager |
| Virtual Machine/System Product | Virtual Machine/XA | virtual memory |
| Virtual Memory System | virtual path | virtual point of presence |
| virtual PoP | Virtual Private Network | virtual reality |
| Virtual Reality Modeling Language | Virtual Sequential Access Method | virtual server |
| virtual shredder | Virtual Software Factory | Virtual Storage Access Method |
| Virtual Storage Extended | Virtual Telecommunications Access Method | virus |
| viruses | visible bell | VisiCalc |
| visionary | visit | Visual BASIC |
| Visual Basic for Applications | Visual BASIC Script | visual bell |
| Visual C++ | Visual Component Library | Visual dBASE |
| Visual Display Unit | Visual FoxPro | Visual Interface |
| visualisation | visual language | visual programming |
| visual programming environment | visual programming language | VisualWorks |
| VITAL | VIVID | viz |
| VLAN | VLB | VLDB |
| Vlisp | VLIW | VLM |
| VLSI | VLSM | VM |
| VM/CMS | VME | VMEbus |
| VME Microsystems International Corporation | VM/ESA | VML |
| VMS | VM/SP | VM/XA |
| vn | vocoder | vocoding |
| VoD | voice mail | voice-net |
| Voice over IP | voice recognition | VoIP |
| volatile | volatile memory | volatile storage |
| volatile variable | voltage | Volume Table Of Contents |
| von Neumann architecture | von Neumann integer | von Neumann, John |
| von Neumann machine | von Neumann ordinal | voodoo programming |
| Voronoi diagram | Voronoi polygon | VOS |
| Voters Telecommunications Watch | voxel | V.pcm |
| VPL | VPN | VP-Planner |
| VQF | VR | VRAM |
| VRC | Vrije Universiteit, Amsterdam | VRML |
| VRTX | VSAM | VSAT |
| VSCM | VSE | V series |
| VSF | VSP | VSTa |
| VSX | VT | vt100 |
| vt220 | VTAM | VTC |
| VTOC | VTS | VTW |
| vu | VUE | VUIT |
| VULCAN | Vulcan death grip | Vulcan nerve pinch |
| vulnerability | vulture capitalist | VUP |
| VxD | VXI | VxWorks |
| W2K | W3 | W3C |
| W3 Consortium | WA-12 | wabbit |
| Wabi | WabiServer | wacco |
| Wafe | WAFL | WAIS |
| WAITS | wait state | waldo |
| walk | walking drives | walk off the end of |
| wall | wall clock time | wall follower |
| wallpaper | wall plate | wall time |
| WAM | WAN | Wang Laboratories |
| wango | Wang PC | wank |
| wannabee | want list | WAP |
| WAP Forum | warchalk | Ward Christensen |
| Ward Cunnigham | wardialer | wardriving |
| warez | WarGames | warlording |
| warm boot | Warm Silence Software | Warp |
| wart | washing machine | Wasserman |
| WATBOL | Watcom C/C++ | Watcom International |
| Watcom SQL | Watcom VX*REXX | Waterfall Model |
| water MIPS | WATFIV | WATFOR |
| wav | WAVE | wave a dead chicken |
| wave division multiplexing | Waveform Generation Language | wavelength division multiplexing |
| wavelet | wavetable | wavetable synthesis |
| WaZOO | wb | WBEM |
| WBMP | WBS | WCDMA |
| WCL | WD | WDASM |
| WDM | WE | Weak Head Normal Form |
| weakly typed | weak typing | weasel |
| web | Web 2.0 | web2c |
| web address | web authoring | Web-Based Enterprise Management |
| web browser | webcam | webcasting |
| WebCGM | WebCOMAL | web consortium |
| web cramming | WebCrawler | WebDAV |
| Web Distributed Authoring and Versioning | webhead | web host |
| web hosting | WEB - language | weblint |
| web log | web mail | webmaster |
| webmistress | webmonkey | WebObjects |
| web page | web proxy | Web Request Broker |
| web server | Web Service Definition Language | Web Services |
| Web Services Business Process Execution Language | website | web smith |
| Webster | Webster's Dictionary | wedged |
| wedgie | wedgitude | Weeble |
| weeds | weenie | Weenix |
| weighted search | well-behaved | well-connected |
| well-known port | well-ordered set | WEP |
| Wesley Clark | Western Digital Corporation | Westmount |
| wetware | wf | WFL |
| WfMC | WFW | WFWG |
| WG | WGL | whack |
| whacker | whales | whalesong |
| whatis | What's a spline? | What You Get Is What You Never Thought You Had |
| What You See Is All You Get | What You See Is What You Get | wheel |
| wheel bit | wheel wars | When It's Done |
| Whetstone | Which Stands For Nothing | while |
| while loop | Whirlwind | White Book |
| White book CD-ROM | white box testing | whitehat |
| White pages | white paper | white point |
| Whitesmiths style | whitespace | white trash |
| WHNF | whois | whole number |
| Whopper | WHQL | WIBNI |
| WIC | Wide Area Information Servers | Wide Area Network |
| Wide Area Telecommunications Service | Wideband ATM | Wide SCSI |
| widget | wi-fi | Wi-Fi Protected Access |
| Wi-Fi Protected Access Pre-Shared Key | wiggles | wiki |
| WiLAN | Wild_LIFE | wild card |
| Wilf Hey | William Gibson | William Hamilton |
| William Joy | WIMP | WIMP environment |
| win | Win2K | Win32 |
| Win32s | WIN386.SWP | Win 95 |
| Win 98 | winchester | windowing |
| windowing system | window manager | Window RAM |
| Window Random Access Memory | Windows | Windows 1 |
| Windows 2 | Windows 2000 | Windows/286 |
| Windows 2K | Windows 3.0 | Windows 3.1 |
| Windows 3.11 | Windows/386 | Windows 4GL |
| Windows 94 | Windows 95 | Windows 98 |
| Windows 9X | Windows Application Binary Interface | Windows CE |
| Windows for Workgroups | Windows for Workgroups 3.1 | Windows for Workgroups 3.11 |
| Windows Hardware Quality Labs | window shopping | Windows Internet Naming Service |
| Windows Management Interface | Windows ME | Windows Messaging |
| windows messaging | Windows Millennium Edition | Windows NT |
| Windows NT 3.1 | Windows NT 3.5 | Windows NT 4 |
| Windows NT 5 | Windows NT Network Model | Windows Open Service Architecture |
| Windows Registry | Windows sockets | Windows XP |
| Windows XP Pro | Windows XP Professional Edition | window system |
| Windoze | Wind River Systems | winged comments |
| winkey | WinMaker Pro | WINS |
| Winsock | WinSoft Products Ltd | wintel |
| WINZIP | wired | Wired Equivalent Privacy |
| wirehead | wireless | Wireless Application Protocol |
| wireless bitmap | Wireless Encryption Protocol | wireless hotspot |
| wireless local area network | Wireless Local Loop | Wireless Transport Layer Security |
| wirewater | WISCII | wish list |
| Wisp | within delta of | within epsilon of |
| wizard | Wizard Book | wizardly |
| wizard mode | WizDOM | wk1 |
| WLAN | WLL | WMA |
| wmf | WMI | WML |
| WMV | WNPP | WO |
| Wolfram Research, Inc. | WOM | woman |
| WOMBAT | wombat | wombat.doc.ic.ac.uk |
| WonderPop | Woodenman | woofer |
| WOOL | Worcester Polytechnic Institute | Word |
| word | Word for Windows | WordNet |
| WordPerfect | WordPerfect Corporation | word processing |
| word processor | word size | word spamming |
| WordTech | word wrap | workaround |
| Work Breakdown Structure | workflow | Workflow Management Coalition |
| workgroup | working as designed | working memory |
| working set | working set model | Work Needed and Prospective Packages |
| work path | worksheet | workstation |
| World Time | World-Wide Wait | World-Wide Web |
| World Wide Web Consortium | World Wide Web Worm | WORM |
| worm | wormhole | wormhole routing |
| WOSA | WOSA Extensions for Financial Systems | WOSA/XFS |
| wound around the axle | WPA | WPA Pre-Shared Key |
| WPA-PSK | WPG | WPI |
| WPL+ | wp-login.php | WPOP |
| wps | WRAM | wrap around |
| wrapper | wrats nest | wrb |
| write | WRITEACOURSE | write-back |
| write buffer | Write-Once Read-Many | write-only code |
| write-only language | write-only memory | write protect |
| write-through | write-thru | writing system |
| Wrong Thing | WRT | ws |
| WSBPEL | WSDL | WSFN |
| WSL | WTF | WTFPL |
| WTH | WTLS | Wumpus |
| WWW | WWW browser | WWWW |
| WYGIWYNTYH | WYSIAYG | WYSIWYG |
| WYSWYG | X | X-1 |
| X11R4 | X11R5 | X11R6 |
| X.12 | X2 | X.208 |
| X.209 | X.21 | X.214 |
| X.215 | X.216 | X.217 |
| X.219 | X.224 | X.225 |
| X.226 | X.227 | X.229 |
| X.25 | X.28 | X.29 |
| X.3 | X3J16 | X3T10 |
| X.400 | X.409 | X.500 |
| X.680 | X.75 | x86 |
| x86 processor socket | XA | Xaw |
| Xbase | xbeeb | xbm |
| XC | X client | X Consortium |
| Xcoral | xdbx | X-Designer |
| X.desktop | XDL | XDR |
| XDS 530 | XDS 940 | xDSL |
| Xemacs | XENIX | Xeon |
| xerox | XEROX Corporation | Xerox Data Systems Model 530 |
| Xerox Data Systems Model 940 | XEROX Network Services | Xerox Network System |
| XEROX PARC | Xerox Star | XFree86 Project, Inc. |
| XFS | Xfun | XGA |
| XGA-2 | XHTML | Xi |
| XIE | Xilinx, Inc. | Xilinx Netlist Format |
| X Image Extension | Xlib | xlisp |
| xls | XML | xmlrpc.php |
| XML schema | XML Template Pages | XML User-Interface Language |
| XMM | XMODEM | XMODEM-1K |
| xmosaic | XMS | XNF |
| xnf2ver | XNS | XOFF |
| XON | XON/XOFF | Xopen |
| X/Open | X/open Portability Guide | X/Open System Interface |
| xor | XP | XPC |
| XperCASE | XPG | XPG3 |
| XPL | xpm | XPOP |
| XP Pro | Xpress Transport Protocol | X protocol |
| xref | XRemote | XRN |
| XSB | XScheme | x-scm |
| XSD | X server | XSI |
| XSL | XSLT | XT |
| Xt | XT bus architecture | xterm |
| X terminal | XTI | XTP |
| XTP Forum | XTRAN | XUI |
| XUL | Xv++ | XVGA |
| XView | XVT | X-Windows |
| X Window System | XWIP | xxgdb |
| XXX | Xy-pic | xyzzy |
| Y | Y2K | YA- |
| Yaa | YABA | yacc |
| YADE | YAFIYGI | YAGNI |
| Yahoo | Yale Haskell | Yamaha |
| YAML | YAML Ain't Markup Language | yank |
| YAPS | YASOS | YAUN |
| Yay | ye | Year 2000 |
| Yellow | Yellow Book | Yellow Book CD-ROM |
| Yellow Book, Jargon | Yellow Box | Yellow Pages |
| yellow wire | Yerk | Yet Another |
| Yet Another Compiler Compiler | Yet Another Scheme Object System | Yet Another Yacc |
| YGMTPO | YLISP | YMMV |
| YMODEM | YMODEM-G | yocto- |
| Yoda condition | YOL Computers | yotta- |
| yottabyte | You are not expected to understand this | You aren't gonna need it |
| Yourdon | Yourdon/Constantine | Yourdon/Demarco |
| Yourdon, Inc. | Yourdon methodology | Your mileage may vary |
| youtube.com | YouTube, Inc. | Yow! |
| yoyo mode | YP | YSM |
| yt | YTalk | yu |
| Yu-Shiang Whole Fish | Z | Z++ |
| Z-1013 | Z180 | Z3 |
| Z39.50 | Z8 | Z80 |
| Z8000 | za | ZAP |
| zap | ZAPP | Z-buffer |
| ZEBRA | Zed | Zen |
| zen | ZENO | zepto |
| Zermelo Fränkel set theory | Zermelo set theory | ZERO |
| zero | Zero and Add Packed | zero assignment |
| zero-content | Zero Insertion Force | zeroth |
| ZEST | ZetaLisp | zetta- |
| zettabyte | Zeus | ZFC |
| ZF expression | ZIF | zigamorph |
| ZIL | Zilog | Zilog Z280 |
| Zilog Z8 | Zilog Z80 | Zilog Z8000 |
| Zilog Z80000 | Zilog Z80A | zip |
| Zipcode | Zip disc | Zip disk |
| Zip Drive | zip file | zip function |
| zipped | zipped file | zipperhead |
| zm | ZMODEM | ZOG |
| ZOLA Technologies | zombie | zombie process |
| zone | Zoo | zoo |
| zoom | Zoomer | ZOPL |
| zorch | Zork | zorkmid |
| z/OS | zr | zsh |
| Z shell | ZUG | Zulu time |
| ZUSE | Zuse | Zuse, Konrad |
| zw | ZX-80 | ZX-81 |
| zxnrbl | ZX Spectrum | Zynet Ltd. |
| ZyXEL | { | {$formKeywords} |
| {IDF} | {log} | {searchTerms} |
| | | } | ~ |
| ~# | £ | µCurse |
