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