| 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 | 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 |
| (2025-02-11) | 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 |
