| 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> |
| = | > | ? |
| ?? | @ | @-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 | 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 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 | 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 | | |
