| Free On-line Dictionary of Computing | Acknowledgements | Missing definition |
| ! | !!!Batch | " |
| # | $ | $1 |
| $tonePits | % | & |
| $ | ' | 'Snooze |
| ( | (()) | () |
| (c) | (TM) | ) |
| * | *brainfuck | *LISP |
| *MOD | *w | + |
| ++ | , | - |
| -- | --C-=C-C-- | -oid |
| -ware | .) | .com |
| .cshrc | .env | .git/config |
| .login | .mailrc | .NET |
| .NET framework | .newsrc | .plan |
| .twmrc | / | /actuator/health |
| /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 | 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> |
| = | > | ? |
| ?? | @ | @-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 | 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 | barf |
| barfmail | barfulation | barfulous |
| barnacle code | barney | 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 |
| beam | 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 | 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 |
| 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+- | [email protected] |
| 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 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 | 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-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 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 | 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 | 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 | 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 | 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 |
| 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 |
| 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 |
| 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 | 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 | 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 | 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 |
| 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 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 2795 | RFC 2821 |
| RFC 3232 | RFC 4213 | RFC 792 |
| 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 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 | 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'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 | 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 |
| 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 | 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 | 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 |
| 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 | 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 | |
