Thursday, 18 August 2011

Computing and IT Abbreviations

Computing and IT Abbreviations

A

• AA — Anti-Aliasing
• AAA — Authentication Authorization, Accounting
• AABB — Axis Aligned Bounding Box
• AAC — Advanced Audio Coding (audio compression format defined by the MPEG-2 standard)
• AAL — ATM Adaptation Layer
• AALC — ATM Adaptation Layer Connection
• AARP — AppleTalk Address Resolution Protocol
• ABI — Application Binary Interface
• ABM — Asynchronous Balanced Mode
• ABR — Area Border Router
• ABR — Auto Baud — Rate Detect
• ABR — Available Bit Rate
• AC — Alternating Current
• AC — Acoustic Coupler
• ACD — Automatic Call Distributor
• ACF — Advanced Communications Function
• ACF NCP — Advanced Communications Function — Network Control Program
• ACID — Atomicity Consistency Isolation Durability
• ACK — ACKnowledgement
• ACL — Access Control List
• ACL — Active Current Loop
• ACM — Association for Computing Machinery
• ACME — Automated Classification of Medical Entities
• ACPI — Advanced Configuration and Power Interface
• ACR — Allowed Cell Rate
• ACR — Attenuation to Crosstalk Ratio
• AD — Active Directory
• AD — Administrative Domain
• ADC — Analog-To-Digital Converter
• ADC — Apple Display Connector (DVI variant)
• ADB — Apple Desktop Bus
• ADCCP — Advanced Data Communications Control Protocol/Procedures
• ADO — ActiveX Data Objects
• ADSL — Asymmetric Digital Subscriber Line (variant of DSL)
• ADT — Abstract Data Type
• AE — Adaptive Equalizer
• AES — Advanced Encryption Standard
• AF — Anisotropic Filtering
• AFP — Apple Filing Protocol
• AGP — Accelerated Graphics Port (sometimes used with a suffix indicating the port's bandwidth, like AGP4x)
• AH — Active Hub
• AI — Artificial Intelligence
• AIX — Advanced Interactive Executive
• Ajax — Asynchronous JavaScript and XML
• AL — Active Link
• AL — Access List
• ALGOL — Algorithmic Language
• ALSA — Advanced Linux Sound Architecture
• ALU — Arithmetic and Logical Unit
• AM — Active Matrix
• AM — Access Method
• AM — Active Monitor
• AM — Amplitude Modulation
• AMD — Advanced Micro Devices
• AMR — Audio Modem Riser
• ANN — Artificial Neural Network
• ANSI — American National Standards Institute
• ANT — Another Neat Tool
• AoE — ATA over Ethernet
• AOP — Aspect-Oriented Programming
• APCI — Application-Layer Protocol Control Information
• API — Application Programming Interface
• APIC — Advanced Programmable Interrupt Controller
• APIPA — Automatic Private IP Addressing
• APL — A Programming Language
• APS — Accunet Packet Service
• APR — Apache Portable Runtime
• ARC – Advanced RISC Computing
• ARIN — American Registry for Internet Numbers
• ARM — Advanced RISC Machines
• ARP — Address Resolution Protocol
• ARPA — Address and Routing Parameter Area
• ARPA — Advanced Research Projects Agency (see also DARPA)
• ARPANET — Advanced Research Projects Agency Network
• AS — Access Server
• ASCII — American Standard Code for Information Interchange
• ASG — Abstract Semantic Graph
• ASIC — Application Specific Integrated Circuit
• ASLR - Address Space Layout Randomization
• ASMP — Asymmetric Multiprocessing
• ASN.1 — Abstract Syntax Notation 1
• ASP — Application Service Provider
• ASP (MS ASP) — Active Server Pages
• ASR — Asynchronous Signal Routine
• AST — Abstract Syntax Tree
• ASSP — Application Specific Standard Product
• AT — Advanced Technology
• AT — Access Time
• AT — Active Terminator
• ATA — Advanced Technology Attachment
• ATAG — Authoring Tool Accessibility Guidelines
• ATAPI — Advanced Technology Attachment Packet Interface
• ATM — Asynchronous Transfer Mode
• AVC — Advanced Video Coding
• AVI — Audio Video Interleaved
• AWT — Abstract Windowing Toolkit

B

• B2B — Business-to-Business
• B2C — Business-to-Consumer
• Bash — Bourne-again shell
• BASIC — Beginner's All-Purpose Symbolic Instruction Code
• BBP — Baseband Processor
• BBS — Bulletin Board System
• BCD — Binary Coded Decimal
• BEEP — Blocks Extensible Exchange Protocol
• BER — Bit Error Rate
• BFD — Binary File Descriptor
• BFS — Breadth-First Search
• BGP — Border Gateway Protocol
• BiDi — Bi-Directional
• bin — binary
• BINAC — Binary Automatic Computer
• BIND — Berkeley Internet Name Daemon
• BIOS — Basic Input Output System
• BJT — Bipolar Junction Transistor
• bit — binary digit
• Blob — Binary large object
• Blog — Web Log
• BMP — Basic Multilingual Plane
• BNC — Bayonet Neill-Concelman
• BOINC — Berkeley Open Infrastructure for Network Computing
• BOM — Byte Order Mark
• BOOTP — Bootstrap Protocol
• BPDU — Bridge Protocol Data Unit
• BPEL — Business Process Execution Language
• BPL — Broadband over Power Lines
• bps — bits per second
• BRR — Business Readiness Rating
• BSA — Business Software Alliance
• BSD — Berkeley Software Distribution (Unix variant)
• BSoD — Blue Screen of Death
• BSS — Block Started by Symbol
• BT — BitTorrent
• BT — Bluetooth
• BTAM — Basic Telecommunications Access Method (an IBM OS/360 API)
• BW — Bandwidth

C

• CA — Certificate Authority
• CAD — Computer-Aided Design
• CAE — Computer-Aided Engineering
• CAID — Computer-Aided Industrial Design
• CAI — Computer-Aided Instruction
• CAM — Computer-Aided Manufacturing
• CAPTCHA — Completely Automated Public Turing Test to tell Computers and Humans Apart
• CAT - Computer-Aided Translation
• CAQ — Computer-Aided Quality Assurance
• CASE — Computer-Aided Software Engineering
• cc — C Compiler
• CD — Compact Disc
• CDE — Common Desktop Environment
• CDMA — Code Division Multiple Access
• CDN - Content Delivery Network
• CDP — Continuous Data Protection
• CD-R — CD-Recordable
• CD-ROM — CD Read-Only Memory
• CD-RW — CD-Rewritable
• CDSA — Common Data Security Architecture
• CERT — Computer Emergency Response Team
• CFWS — Comment and/or Folding White Space
• CES — Consumer Electronics Show
• CF — Compact Flash
• CFD — Computational Fluid Dynamics
• CFG — Context-Free Grammar
• CFG — Control Flow Graph
• CG — Computer Graphics
• CGA — Color Graphics Array
• CGI — Common Gateway Interface
• CGI — Computer-Generated Imagery
• CGT — Computational Graph Theory
• CHAP — Challenge-Handshake Authentication Protocol
• CHS — Cylinder-Head-Sector
• CIFS — Common Internet Filesystem
• CIM — Common Information Model
• CISC — Complex Instruction Set Computer
• CJK — Chinese, Japanese, and Korean
• CJKV — Chinese, Japanese, Korean, and Vietnamese
• CLI — Command Line Interface
• CLR — Common Language Runtime
• CM — Configuration Management
• CM — Content Management
• CMOS — Complementary Metal-Oxide Semiconductor
• CMS — Content Management System
• CN — Canonical Name
• CN — Common Name
• CNC — Computer Numerical Control
• CNR — Communications and Networking Riser
• COBOL — Common Business-Oriented Language
• COM — Component Object Model
• CORBA — Common Object Request Broker Architecture
• COTS — Commercial Off-The-Shelf
• CMMI - Capability Maturity Model Integration
• CPA — Cell Processor Architecture
• CPA — Control Panel Applet
• CPA — Converged Packet Access
• CPAN — Comprehensive Perl Archive Network
• CP/M — Control Program/Monitor
• cps — characters per second
• CPU — Central Processing Unit
• CR — Carriage Return
• CRAN — Comprehensive R Archive Network
• CRC — Cyclic Redundancy Check
• CRLF — Carriage Return Line Feed
• CRM — Customer Relationship Management
• CRT — Cathode Ray Tube
• CRUD — Create, Read, Update and Delete
• CS — Cable Select
• CS — Computer Science
• CSE — Computer Science and Engineering
• CSI — Common System Interface
• CSRF — Cross-Site Request Forgery
• CSS — Cascading Style Sheets
• CSS — Content-Scrambling System
• CSS — Closed Source Software
• CSS — Cross-Site Scripting
• CSV — Comma-Separated Values
• CT — Computerized Tomography
• CTAN — Comprehensive TeX Archive Network
• CTCP — Client-To-Client Protocol
• CTI — Computer Telephony Integration
• CTL — Computational Tree Logic
• CTM — Close To Metal
• CTS — Clear To Send
• CTSS — Compatible Time-Sharing System
• CUA — Common User Access
• CVS — Concurrent Versioning System

D

• DAC — Digital-To-Analog Converter
• DAC — Discretionary Access Control
• DAO — Data Access Objects
• DAO — Disk-At-Once
• DAP — Directory Access Protocol
• DARPA — Defense Advanced Research Projects Agency
• DAT — Digital Audio Tape
• DB — Database
• DBA — Database Administrator
• DBCS — Double Byte Character Set
• DBMS — Database Management System
• DCC — Direct Client-to-Client
• DCCA — Debian Common Core Alliance
• DCL — Data Control Language
• DCMI — Dublin Core Metadata Initiative
• DCOM — Distributed Component Object Model
• DD — Double Density
• DDE — Dynamic Data Exchange
• DDL — Data Definition Language
• DDoS — Distributed Denial of Service
• DDR — Double Data Rate
• DEC — Digital Equipment Corporation
• DES — Data Encryption Standard
• dev — development
• DFA — Deterministic Finite Automaton
• DFD — Data Flow Diagram
• DFS — Depth-First Search
• DFS — Distributed File System
• DHCP — Dynamic Host Configuration Protocol
• DHTML — Dynamic HTML
• DIF — Data Integrity Field
• DIMM — Dual Inline Memory Module
• DIN — Deutsches Institut für Normung
• DIP — Dual In-line Package
• DIVX — Digital Video Express
• DIY - Do It Yourself devices
• DKIM — Domain Keys Identified Mail
• DL — Download
• DLL — Dynamic Link Library
• DLP — Digital Light Processing
• DMA — Direct Memory Access
• DMCA — Digital Millennium Copyright Act
• DML — Data Manipulation Language
• DMR — Dennis M. Ritchie
• DN — Distinguished Name
• DND — Drag-and-Drop
• DNS — Domain Name System
• DOCSIS — Data Over Cable Service Interface Specification
• DOM — Document Object Model
• DoS — Denial of Service
• DOS — Disk Operating System
• DP — Dot Pitch
• DPI — Dots Per Inch
• DPMI — DOS Protected Mode Interface
• DPMS — Display Power Management Signaling
• DRAM — Dynamic Random Access Memory
• DRI — Direct Rendering Infrastructure
• DRM — Digital Rights Management
• DRM — Direct Rendering Manager
• DSDL — Document Schema Definition Languages
• DSDM — Dynamic Systems Development Method
• DSL — Digital Subscriber Line
• DSL — Domain-Specific Language
• DSLAM — Digital subscriber line access multiplexer
• DSN — Database Source Name (ODBC)
• DSN — Data set Name
• DSP — Digital Signal Processor
• DSSSL — Document Style Semantics and Specification Language
• DTD — Document Type Definition
• DTE — Data Terminal Equipment
• DTP — Desktop Publishing
• DTR — Data Terminal Ready
• DVD — Digital Versatile Disc
• DVD — Digital Video Disc
• DVD-R — DVD-Recordable
• DVD-ROM — DVD-Read Only Memory
• DVD-RW — DVD-Rewritable
• DVI — Digital Visual Interface
• DVR — Digital Video Recorder (see also PVR)

E

• EAI — Enterprise Application Integration
• EAP — Extensible Authentication Protocol
• EBCDIC — Extended Binary Coded Decimal Interchange Code
• EBML — Extensible Binary Meta Language
• ECC — Elliptic Curve Cryptography
• ECMA — European Computer Manufacturers Association
• EDA — Electronic Design Automation
• EDI — Electronic Data Interchange
• EDO — Extended Data Out
• EDSAC — Electronic Delay Storage Automatic Computer
• EDVAC — Electronic Discrete Variable Automatic Computer
• EEPROM — Electronically-Erasable Programmable Read-Only Memory
• EFF — Electronic Frontier Foundation
• EFI — Extensible Firmware Interface
• EFM — Eight-to-Fourteen Modulation
• EGA — Enhanced Graphics Array
• EGP — Exterior Gateway Protocol
• eID — electronic ID card
• EIDE — Enhanced IDE
• EIGRP — Enhanced Interior Gateway Routing Protocol
• EISA — Extended Industry Standard Architecture
• ELF — Extremely Low Frequency
• ELF — Executable and Linkable Format
• ELM — Electronic Mail
• EMACS — Editor Macros
• EMS — Expanded Memory Specification
• ENIAC — Electronic Numerical Integrator And Computer
• EOF — End of File
• EOL — End of Life
• EOL — End of Line
• EOM — End of Message
• EPROM — Erasable Programmable Read-Only Memory
• ERP — Enterprise Resource Planning
• ESCON — Enterprise Systems Connection
• ESD — Electrostatic Discharge
• ETL — Extract, Transform, Load
• ESR — Eric Steven Raymond
• EUC — Extended Unix Code
• EULA — End User License Agreement
• EXE — EXEcutable
F
• FAP — FORTRAN Assembly Program
• FAT — File Allocation Table
• FAQ — Frequently Asked Questions
• FBDIMM — Fully Buffered Dual Inline Memory Module
• FC-AL — Fiber Channel Arbitrated Loop
• FCB — File Control Block
• FDC — Floppy Disk Controller
• FDS — Fedora Directory Server
• FDD — Floppy Disk Drive
• FDDI — Fiber Distributed Data Interface
• FDMA — Frequency-Division Multiple Access
• FEC — Forward Error Correction
• FEMB — Front-End Motherboard
• FET — Field Effect Transistor
• FICON — Fiber Connectivity
• FIFO — First In First Out
• FHS — Filesystem Hierarchy Standard
• FLAC — Free Lossless Audio Codec
• FLOPS — FLoating-Point Operations Per Second
• FCS — Frame Check Sequence
• FLOSS — Free/Libre/Open Source Software
• FOLDOC — Free On-line Dictionary of Computing
• FOSDEM — Free and Open source Software Developers' European Meeting
• FOSI — Formatted Output Specification Instance
• FOSS — Free and Open Source Software
• FPGA — Field Programmable Gate Array
• FPU — Floating Point Unit
• FS — File System
• FSB — Front Side Bus
• FSF — Free Software Foundation
• FSM — Finite State Machine
• FTTC — Fiber To The Curb
• FTTH — Fiber To The Home
• FTTP — Fiber To The Premises
• FTP — File Transfer Protocol
• FQDN — Fully Qualified Domain Name
• FUCT — Failed Under Continuous Test
• FUD — Fear Uncertainty Doubt
• FWS — Folding White Space
• FXP — File eXchange Protocol

G

• G11N — Globalization
• Gb — Gigabit
• GB — Gigabyte
• GCC — GNU Compiler Collection (formerly GNU C Compiler)
• GCJ — GNU Compiler for Java
• GCR — Group Code Recording
• GDB — GNU Debugger
• GDI — Graphics Device Interface
• GFDL — GNU Free Documentation License
• GIF — Graphics Interchange Format
• GIGO — Garbage In, Garbage Out
• GIMP — GNU Image Manipulation Program
• GIMPS — Great Internet Mersenne Prime Search
• GIS — Geographic Information System
• GLUT — OpenGL Utility Toolkit
• GML — Geography Markup Language
• GNOME — GNU Network Object Model Environment
• GNU — GNU's Not Unix
• GOMS — Goals, Operators, Methods, and Selection rules
• GPG — GNU Privacy Guard
• GPGPU — General-Purpose Computing on Graphics Processing Units
• GPIB — General-Purpose Instrumentation Bus
• GPL — General Public License
• GPL — General-Purpose Language
• GPRS — General Packet Radio Service
• GPT — GUID Partition Table
• GPU — Graphics Processing Unit
• GRUB — Grand Unified Boot-Loader
• GSM — Global System for Mobile Communications
• GTK+ — GIMP Toolkit
• GUI — Graphical User Interface
• GUID — Globally Unique IDentifier
• GWT — Google Web Toolkit

H

• HAL — Hardware Abstraction Layer
• HBA — Host Bus Adapter
• HCI — Human Computer Interaction
• HD — High Density
• HDD — Hard Disk Drive
• HD DVD — High Definition DVD
• HDL — Hardware Description Language
• HF — High Frequency
• HHD — Hybrid Hard Drive
• HID — Human Interface Device
• HIG — Human Interface Guidelines
• HIRD — Hurd of Interfaces Representing Depth
• HMA — High Memory Area
• HP — Hewlett-Packard
• HPC — High-Performance Computing
• HPFS — High Performance File System
• HSM — Hierarchical Storage Management
• HT — Hyper Threading
• HTM — Hierarchical Temporal Memory
• HTML — Hypertext Markup Language
• HTTP — Hypertext Transfer Protocol
• HTTPd — Hypertext Transport Protocol Daemon
• HTX — HyperTransport eXpansion
• HURD — Hird of Unix-Replacing Daemons
• HVD — Holographic Versatile Disc
• Hz — Hertz

I

• I2C — Inter-Integrated Circuit
• I18N — Internationalization
• IANA — Internet Assigned Numbers Authority
• iBCS — Intel Binary Compatibility Standard
• IBM — International Business Machines
• IC — Integrated Circuit
• ICANN — Internet Corporation for Assigned Names and Numbers
• ICE — In-Circuit Emulator
• ICE — Intrusion Countermeasure Electronics
• ICMP — Internet Control Message Protocol
• ICP — Internet Cache Protocol
• ICT — Information and Communication Technology
• IDE — Integrated Development Environment
• IDE — Integrated Drive Electronics
• IDL — Interface Definition Language
• IDS — Intrusion Detection System
• IE — Internet Explorer
• IEC — International Electrotechnical Commission
• IEEE — Institute of Electrical and Electronics Engineers
• IETF — Internet Engineering Task Force
• IFL — Integrated Facility for Linux
• IGMP — Internet Group Management Protocol
• IGRP — Interior Gateway Routing Protocol
• IHV — Independent Hardware Vendor
• IIOP — Internet Inter-Orb Protocol
• IIS — Internet Information Services
• IM — Instant Messaging
• IMAP — Internet Message Access Protocol
• IME — Input Method Editor
• INFOSEC — Information Systems Security
• I/O — Input/Output
• IP — Intellectual Property
• IP — Internet Protocol
• IPC — Inter-Process Communication
• IPL — Initial Program Load
• IPP — Internet Printing Protocol
• IPS — Intrusion Prevention System
• IPsec — Internet Protocol security
• IPTV — Internet Protocol Television
• IPX — Internetwork Packet Exchange
• IRC — Internet Relay Chat
• IrDA — Infrared Data Association
• IRP — I/O Request Packet
• IRQ — Interrupt Request
• IS — Information Systems
• ISA — Industry Standard Architecture
• ISAM — Indexed Sequential Access Method
• ISC — Internet Storm Center
• ISDN — Integrated Services Digital Network
• ISO — International Organization for Standardization
• ISP — Internet Service Provider
• ISPF — Interactive System Productivity Facility
• ISR — Interrupt Service Routine
• ISV — Independent Software Vendor
• IT — Information Technology
• ITL — Interval Temporal Logic
• ITU — International Telecommunication Union

J

• J2CE — Java 2 Cryptographic Edition
• J2EE — Java 2 Enterprise Edition
• J2ME — Java 2 Micro Edition
• J2SE — Java 2 Standard Edition
• JAXB — Java Architecture for XML Binding
• JAX-RPC — Java XML for Remote Procedure Calls
• JAXP — Java API for XML Processing
• JBOD — Just a Bunch of Disks
• JCL — Job Control Language
• JCP — Java Community Process
• JDBC — Java Database Connectivity
• JDK — Java Development Kit
• JES — Job Entry Subsystem
• JDS — Java Desktop System
• JFC — Java Foundation Classes
• JFET — Junction Field-Effect Transistor
• JFS — IBM Journaling File System
• JINI — Jini Is Not Initials
• JIT — Just-In-Time
• JMX — Java Management Extensions
• JMS — Java Message Service
• JNDI — Java Naming and Directory Interface
• JNI — Java Native Interface
• JPEG — Joint Photographic Experts Group
• JRE — Java Runtime Environment
• JS — JavaScript
• JSON — JavaScript Object Notation
• JSP — Jackson Structured Programming
• JSP — JavaServer Pages
• JTAG — Joint Test Action Group
• JUG — Java Users Group
• JVM — Java Virtual Machine
• jwz — Jamie Zawinski

K

• K&R — Kernighan and Ritchie
• KB — Keyboard
• Kb — Kilobit
• KB — Kilobyte
• KB — Knowledge Base
• KDE — K Desktop Environment
• kHz — Kilohertz
• KISS — Keep It Simple, Stupid
• KVM — Keyboard, Video, Mouse

L

• L10N — Localization
• LAMP — Linux Apache MySQL (Perl, PHP, or Python)
• LAN — Local Area Network
• LBA — Logical Block Addressing
• LCD — Liquid Crystal Display
• LCOS — Liquid Crystal On Silicon
• LDAP — Lightweight Directory Access Protocol
• LE — Logical Extents
• LED — Light-Emitting Diode
• LF — Line Feed
• LF — Low Frequency
• LFS — Linux From Scratch
• lib — library
• LIF — Low Insertion Force
• LIFO — Last In First Out
• LILO — Linux Loader
• LKML — Linux Kernel Mailing List
• LM — Lan Manager
• LGPL — [GNU] Lesser General Public License
• LOC — Lines of Code
• LPI — Linux Professional Institute
• LSB — Least Significant Bit
• LSB — Linux Standard Base
• LSI — Large-Scale Integration
• LTL — Linear Temporal Logic
• LTR — Left-to-Right
• LUG — Linux User Group
• LUN — Logical Unit Number
• LV — Logical Volume
• LVD — Low Voltage Differential
• LVM — Logical Volume Management
• LZW — Lempel-Ziv-Welch

M

• MAC — Mandatory Access Control
• MAC — Media Access Control
• MAN — Metropolitan Area Network
• MANET — Mobile Ad-Hoc Network
• MAPI — Messaging Application Programming Interface
• Mb — Megabit
• MB — Megabyte
• MBCS — Multi Byte Character Set
• MBR — Master Boot Record
• MCA — Micro Channel Architecture
• MCSA — Microsoft Certified Systems Administrator
• MCSD — Microsoft Certified Solution Developer
• MCSE — Microsoft Certified Systems Engineer
• MDA — Mail Delivery Agent
• MDA — Model-Driven Architecture
• MDA — Monochrome Display Adapter
• MDI — Multiple Document Interface
• ME — [Windows] Millennium Edition
• MF — Medium Frequency
• MFC — Microsoft Foundation Classes
• MFM — Modified Frequency Modulation
• MHz — Megahertz
• MIB — Management Information Base
• MICR — Magnetic Ink Character Recognition
• MIDI — Musical Instrument Digital Interface
• MIMD — Multiple Instruction, Multiple Data
• MIMO — Multiple-Input Multiple-Output
• MIPS — Million Instructions Per Second
• MIPS — Microprocessor without Interlocked Pipeline Stages
• MIS — Management Information Systems
• MISD — Multiple Instruction, Single Data
• MIT — Massachusetts Institute of Technology
• MIME — Multipurpose Internet Mail Extensions
• MMDS — Mortality Medical Data System
• MMI — Man Machine Interface.
• MMIO — Memory-Mapped I/O
• MMORPG — Massively Multiplayer Online Role-Playing Game
• MMU — Memory Management Unit
• MMX — Multi-Media Extensions
• MNG — Multiple-image Network Graphics
• MoBo — Motherboard
• MOO — MUD Object Oriented
• MOSFET — Metal-Oxide Semiconductor FET
• MOTD — Message Of The Day
• MPAA — Motion Picture Association of America
• MPEG — Motion Pictures (Coding) Experts Group
• MPL — Mozilla Public License
• MPU — Microprocessor Unit
• MS — Memory Stick
• MS — Microsoft
• MSB — Most Significant Bit
• MS-DOS — Microsoft DOS
• MT — Machine Translation
• MTA — Mail Transfer Agent
• MTU — Maximum Transmission Unit
• MSA — Mail Submission Agent
• MSDN — Microsoft Developer Network
• MSI — Medium-Scale Integration
• MSI — Microsoft Installer
• MUA — Mail User Agent
• MUD — Multi-User Dungeon
• MVC — Model-View-Controller
• MVP — Most Valuable Professional
• MVS — Multiple Virtual Storage
• MX — Mail exchange

N

• NACK — Negative ACKnowledgement
• NAK — Negative AcKnowledge Character
• NAS — Network-Attached Storage
• NAT — Network Address Translation
• NCP — NetWare Core Protocol
• NCQ — Native Command Queuing
• NCSA — National Center for Supercomputing Applications
• NDPS — Novell Distributed Print Services
• NDS — Novell Directory Services
• NEP — Network Equipment Provider
• NEXT — Near-End CrossTalk
• NFA — Nondeterministic Finite Automaton
• GNSCB — Next-Generation Secure Computing Base
• NFS — Network File System
• NI — National Instruments
• NIC — Network Interface Card
• NIM — No Internal Message
• NIO — New I/O
• NIST — National Institute of Standards and Technology
• NLP — Natural Language Processing
• NLS — Native Language Support
• NP — Non-Deterministic Polynomial-Time
• NPL — Netscape Public License
• NPU — Network Processing Unit
• NS — Netscape
• NSA — National Security Agency
• NSPR — Netscape Portable Runtime
• NMI — Non-Maskable Interrupt
• NNTP — Network News Transfer Protocol
• NOC — Network Operations Center
• NOP — No OPeration
• NOS — Network Operating System
• NPTL — Native POSIX Thread Library
• NSS — Novell Storage Service
• NSS — Network Security Services
• NSS — Name Service Switch
• NT (Windows) — New Technology
• NTFS — NT Filesystem
• NTLM — NT Lan Manager
• NTP — Network Time Protocol
• NUMA — Non-Uniform Memory Access
• NURBS — Nonuniform Rational B-Spline
• NVRAM — Non-Volatile Random Access Memory

O

• OASIS — Organization for the Advancement of Structured Information Standards
• OAT — Operational Acceptance Testing
• ODBC — Open Database Connectivity
• OEM — Original Equipment Manufacturer
• OES — Open Enterprise Server
• OFTC — Open and Free Technology Community
• OLAP — Online Analytical Processing
• OLE — Object Linking and Embedding
• OLED — Organic Light Emitting Diode
• OLPC — One Laptop per Child
• OLTP — Online Transaction Processing
• OMG — Object Management Group
• OO — Object-Oriented
• OO — Open Office
• OOo — OpenOffice.org
• OOP — Object-Oriented Programming
• OPML — Outline Processor Markup Language
• ORB — Object Request Broker
• ORM — Oject-Relational Mapping
• OS — Open Source
• OS — Operating System
• OSCON — O'Reilly Open Source Convention
• OSDN — Open Source Developer Network
• OSI — Open Source Initiative
• OSI — Open Systems Interconnection
• OSPF — Open Shortest Path First
• OSS — Open Sound System
• OSS — Open-Source Software
• OSS — Operational Support Systems
• OSTG — Open Source Technology Group (formerly OSDN)
• OUI — Organizationally Unique Identifier

P

• P2P — Peer-To-Peer
• PAN — Personal Area Network
• PAP — Password Authentication Protocol
• PARC — Palo Alto Research Center
• PATA — Parallel ATA
• PC — Personal Computer
• PCB — Printed Circuit Board
• PCB — Process Control Block
• PCI — Peripheral Component Interconnect
• PCIe — PCI Express
• PCL — Printer Command Language
• PCMCIA — Personal Computer Memory Card International Association
• PCM — Pulse-Code Modulation
• PCRE — Perl Compatible Regular Expressions
• PD — Public Domain
• PDA — Personal Digital Assistant
• PDF — Portable Document Format
• PDP — Programmed Data Processor
• PE — Physical Extents
• PEBKAC — Problem Exists Between Keyboard And Chair
• PERL — Practical Extraction and Reporting Language
• PGA — Pin Grid Array
• PGP — Pretty Good Privacy
• PHP — PHP: Hypertext Preprocessor
• PIC — Peripheral Interface Controller
• PIC — Programmable Interrupt Controller
• PID — Proportional-Integral-Derivative
• PID — Process ID
• PIM — Personal Information Manager
• PINE — Program for Internet News & Email
• PIO — Programmed Input/Output
• PKCS — Public Key Cryptography Standards
• PKI — Public Key Infrastructure
• PLC — Power Line Communication
• PLC — Programmable Logic Controller
• PLD — Programmable Logic Device
• PL/I — Programming Language One
• PL/M — Programming Language for Microcomputers
• PL/P — Programming Language for Prime
• PLT — Power Line Telecoms
• PMM — Personal Memory Manager
• PMM — POST Memory Manager
• PNG — Portable Network Graphics
• PnP — Plug-and-Play
• PoE — Power over Ethernet
• POP — Point of Presence
• POP3 — Post Office Protocol v3
• POSIX — Portable Operating System Interface
• POST — Power-On Self Test
• PPC — PowerPC
• PPI — Pixels Per Inch
• PPP — Point-to-Point Protocol
• PPPoA — PPP over ATM
• PPPoE — PPP over Ethernet
• PPTP — Point-to-Point Tunneling Protocol
• PS — PostScript
• PS/2 — Personal System/2
• PSU — Power Supply Unit
• PSVI — Post-Schema-Validation Infoset
• PV — Physical Volume
• PVG — Physical Volume Group
• PVR — Personal Video Recorder
• PXE — Preboot Execution Environment
• PXI — PCI Extensions for Instrumentation

Q

• QDR — Quad Data Rate
• QA — Quality Assurance
• QFP — Quoted For Permanence
• QoS — Quality of Service
• QOTD — Quote of the Day
• Qt — Quasar Toolkit
• QTAM— Queued Telecomunications Access Method (an IBM OS/360 API)

R

• RACF — Resource Access Control Facility
• RAD — Rapid Application Development
• RADIUS — Remote Authentication Dial In User Service
• RAID — Redundant Array of Independent Disks
• RAID — Redundant Array of Inexpensive Disks
• RAIT — Redundant Array of Inexpensive Tapes
• RAM — Random Access Memory
• RARP — Reverse Address Resolution Protocol
• RC — Region Code
• RC — Release Candidate
• RC — Run Commands
• RCS — Revision Control System
• RDBMS — Relational Database Management System
• RDF — Resource Description Framework
• RDM — Relations Database Management
• RDS — Relations Database System
• REFAL — REcursive Functions Algorithmic Language
• REST — Representational State Transfer
• regex — Regular Expression
• regexp — Regular Expression
• RF — Radio Frequency
• RFC — Request For Comments
• RFI — Radio Frequency Interference
• RFID — Radio Frequency Identification
• RGB — Red, Green, Blue
• RGBA — Red, Green, Blue, Alpha
• RHL — Red Hat Linux
• RHEL — Red Hat Enterprise Linux
• RIA — Rich Internet Application
• RIAA — Recording Industry Association of America
• RIP — Raster Image Processor
• RIP — Routing Information Protocol
• RISC — Reduced Instruction Set Computer
• RLE — Run-Length Encoding
• RLL — Run Length Limited
• RMI — Remote Method Invocation
• RMS — Richard Matthew Stallman
• ROM — Read Only Memory
• ROMB — Read-Out Motherboard
• RPC — Remote Procedure Call
• RPG — Report Program Generator
• RPM — RPM Package Manager
• RSA — Rivest Shamir Adleman
• RSI — Repetitive Strain Injury
• RSS — Rich Site Summary, RDF Site Summary, or Really Simple Syndication
• RTC — Real-Time Clock
• RTE — Real-Time Enterprise
• RTL — Right-to-Left
• RTOS — Real Time Operating System
• RTS — Ready To Send

S

• SaaS — Software as a Service
• SAN — Storage Area Network
• SAR — Search And Replace[1]
• SATA — Serial ATA
• SAS — Statistical Analysis System
• SAX — Simple API for XML
• SBOD — Spinning Beachball of Death
• SBP-2 — Serial Bus Protocol 2
• sbin — superuser binary
• SBU — Standard Build Unit
• SCADA — Supervisory Control And Data Acquisition
• SCID — Source Code in Database
• SCM — Software Configuration Management
• SCM — Source Code Management
• SCP — Secure Copy
• SCPI — Standard Commands for Programmable Instrumentation
• SCSI — Small Computer System Interface
• SD — Secure Digital
• SDDL — Security Descriptor Definition Language
• SDI — Single Document Interface
• SDIO — Secure Digital Input Output
• SDK — Software Development Kit
• SDL — Simple DirectMedia Layer
• SDN — Service Delivery Network
• SDR — Software-Defined Radio
• SDRAM — Synchronous Dynamic Random Access Memory
• SDSL — Symmetric DSL
• SE — Single Ended
• SEAL — Semantics-directed Environment Adaptation Language
• SEI — Software Engineering Institute
• SFTP — Secure FTP
• SFTP — Simple File Transfer Protocol
• SFTP — SSH File Transfer Protocol
• SGI — Silicon Graphics, Incorporated
• SGML — Standard Generalized Markup Language
• SHA — Secure Hash Algorithm
• SIGCAT — Special Interest Group on CD-ROM Applications and Technology
• SIGGRAPH — Special Interest Group on Graphics
• SIMD — Single Instruction, Multiple Data
• SIMM — Single Inline Memory Module
• SIP — Session Initiation Protocol
• SIP — Supplementary Ideographic Plane
• SISD — Single Instruction, Single Data
• SLED — SUSE Linux Enterprise Desktop
• SLES — SUSE Linux Enterprise Server
• SLI — Scalable Link Interface
• SLIP — Serial Line Internet Protocol
• SLM — Service Level Management
• SLOC — Source Lines of Code
• SPMD — Single Program, Multiple Data
• SMA — SubMiniature version A
• SMB — Server Message Block
• SMBIOS — System Management BIOS
• SMC — SMC Networks (company)
• SMIL — Synchronized Multimedia Integration Language
• S/MIME — Secure/Multipurpose Internet Mail Extensions
• SMP — Supplementary Multilingual Plane
• SMP — Symmetric Multi-Processing
• SMS — Short Message Service
• SMS — System Management Server
• SMT — Simultaneous Multithreading
• SMTP — Simple Mail Transfer Protocol
• SNA — Systems Network Architecture
• SNMP — Simple Network Management Protocol
• SOA — Service-Oriented Architecture
• SOE — Standard Operating Environment
• SOAP — Simple Object Access Protocol
• SoC — System-on-a-Chip
• SO-DIMM — Small Outline DIMM
• SOHO — Small Office/Home Office
• SOI — Silicon On Insulator
• SP — Service Pack
• SPA — Single Page Application
• SPF — Sender Policy Framework
• SPI — Serial Peripheral Interface
• SPI — Stateful Packet Inspection
• SPARC — Scalable Processor Architecture
• SQL — Structured Query Language
• SRAM — Static Random Access Memory
• SSD — Software Specification Document
• SSD - Solid-State Drive
• SSE — Streaming SIMD Extensions
• SSH — Secure Shell
• SSI — Server Side Includes
• SSI — Single-System Image
• SSI — Small-Scale Integration
• SSID — Service Set Identifier
• SSL — Secure Socket Layer
• SSP — Supplementary Special-purpose Plane
• SSSE — Supplementary Streaming SIMD Extensions
• su — superuser
• SUS — Single UNIX Specification
• SVC — Scalable Video Coding
• SVG — Scalable Vector Graphics
• SVGA — Super Video Graphics Array
• SVD — Structured VLSI Design
• SWF — Shock Wave Flash
• SWT — Standard Widget Toolkit
• Sysop — System operator

T

• TAO — Track-At-Once
• TB — Terabyte
• Tcl — Tool Command Language
• TCP — Transmission Control Protocol
• TCP/IP — Transmission Control Protocol/Internet Protocol
• TCU — Telecommunication Control Unit
• TDMA — Time Division Multiple Access
• temp — temporary (variable, file, directory, etc.)
• TFT — Thin Film Transistor
• TI — Texas Instruments
• TLA — Three-Letter Acronym
• TLD — Top-Level Domain
• TLS — Thread-Local Storage
• TLS — Transport Layer Security
• tmp — temporary (variable, file, directory, etc.)
• TNC — Terminal Node Controller
• TNC — Threaded Neill-Concelman connector
• TSO — Time Sharing Option
• TSP — Traveling Salesman Problem
• TSR — Terminate and Stay Resident
• TTA — True Tap Audio
• TTF — TrueType Font
• TTL — Transistor-Transistor Logic
• TTL — Time To Live
• TTS — Text-to-Speech
• TTY — Teletype
• TUCOWS — The Ultimate Collection of Winsock Software
• TUG — TeX Users Group
• TWAIN - Technology Without An Interesting Name

U

• UAAG — User Agent Accessibility Guidelines
• UAC — User Account Control
• UART — Universal Asynchronous Receiver Transmitter
• UAT — User Acceptance Testing
• UCS — Universal Character Set
• UDDI — Universal Description, Discovery, and Integration
• UDMA — Ultra DMA
• UDP — User Datagram Protocol
• UE — User Experience
• UEFI — Unified Extensible Firmware Interface
• UHF — Ultra High Frequency
• UI — User Interface
• UL — Upload
• ULA — Uncommitted Logic Array
• UMA — Upper Memory Area
• UMB — Upper Memory Block
• UML — Unified Modeling Language
• UML — User-Mode Linux
• UMPC — Ultra-Mobile Personal Computer
• UNC — Universal Naming Convention
• UPS — Uninterruptible Power Supply
• URI — Uniform Resource Identifier
• URL — Uniform Resource Locator
• URN — Uniform Resource Name
• USB — Universal Serial Bus
• usr — user
• USR — U.S. Robotics
• UTC — Coordinated Universal Time
• UTF — Unicode Transformation Format
• UUCP — Unix to Unix Copy
• UUID — Universally Unique Identifier
• UVC — Universal Virtual Computer

V

• var — variable
• VAX — Virtual Address eXtension
• VCPI — Virtual Control Program Interface
• VR — Virtual Reality
• VRML — Virtual Reality Modeling Language
• VB — Visual Basic
• VBA — Visual Basic for Applications
• VBS — Visual Basic Script
• VESA — Video Electronics Standards Association
• VFAT — Virtual FAT
• VFS — Virtual File System
• VG — Volume Group
• VGA — Video Graphics Array
• VGCT - Video Graphics Character Table
• VHF — Very High Frequency
• VLAN — Virtual Local Area Network
• VLSM — Variable Length Subnet Mask
• VLB — Vesa Local Bus
• VLF — Very Low Frequency
• VLIW - Very Long Instruction Word— uinvac
• VLSI — Very-Large-Scale Integration
• VM — Virtual Machine
• VM — Virtual Memory
• VOD — Video On Demand
• VoIP — Voice over IP
• VPN — Virtual Private Network
• VPU — Visual Processing Unit
• VSAM — Virtual Storage Access Method
• VSAT — Very Small Aperture Terminal
• VT — Video Terminal?
• VTAM — Virtual Telecommunications Access Method

W

• W3C — World Wide Web Consortium
• WAFS — Wide Area File Services
• WAI — Web Accessibility Initiative
• WAIS — Wide Area Information Server
• WAN — Wide Area Network
• WAP — Wireless Access Point
• WAP — Wireless Application Protocol
• WAV — WAVEform audio format
• WBEM — Web-Based Enterprise Management
• WCAG — Web Content Accessibility Guidelines
• WCF — Windows Communication Foundation
• WDM — Wavelength Division Multiplexing
• WebDAV — WWW Distributed Authoring and Versioning
• WEP — Wired Equivalent Privacy
• Wi-Fi — Wireless Fidelity
• WiMAX — Worldwide Interoperability for Microwave Access
• WinFS — Windows Future Storage
• WINS- Windows Internet Naming Service
• WLAN — Wireless Local Area Network
• WMA — Windows Media Audio
• WMV — Windows Media Video
• WOL — Wake-on-LAN
• WOM — Wake-on-Modem
• WOR — Wake-on-Ring
• WPA — Wi-Fi Protected Access
• WPAN — Wireless Personal Area Network
• WPF — Windows Presentation Foundation
• WSDL — Web Services Description Language
• WSFL — Web Services Flow Language
• WUSB — Wireless Universal Serial Bus
• WWAN — Wireless Wide Area Network
• WWID — World Wide Identifier
• WWN — World Wide Name
• WWW — World Wide Web
• WYSIWYG — What You See Is What You Get
• WZC — Wireless Zero Configuration
• WFI — Wait For Interrupt

X

• XAG — XML Accessibility Guidelines
• XAML — eXtensible Application Markup Language
• XDM — X Window Display Manager
• XDMCP — X Display Manager Control Protocol
• XCBL — XML Common Business Library
• XHTML — eXtensible Hypertext Markup Language
• XILP — XILP Internet Links People
• XML — eXtensible Markup Language
• XMMS — X Multimedia System
• XMPP — eXtensible Messaging and Presence Protocol
• XMS — Extended Memory Specification
• XNS — Xerox Network Services
• XP — Cross-Platform
• XP — Extreme Programming
• XPCOM — Cross Platform Component Object Model
• XPI — Cross Platform Installer
• XPIDL — Cross-Platform IDL
• XSD — XML Schema Definition
• XSL — eXtensible Stylesheet Language
• XSL-FO — eXtensible Stylesheet Language Formatting Objects
• XSLT — eXtensible Stylesheet Language Transformations
• XSS — Cross-Site Scripting
• XTF — Extensible Tag Framework
• XUL — XML User Interface Language

Y

• Y2K — Year Two Thousand
• YACC — Yet Another Compiler Compiler
• YAML — YAML Ain't Markup Language
• YAST — Yet Another Setup Tool

Z

• ZCAV — Zone Constant Angular Velocity
• ZCS — Zero Code Suppression
• ZIF — Zero Insertion Force
• ZIFS — Zero Insertion Force Socket
• ZISC — Zero Instruction Set Computer
• ZOPE — Z Object Publishing Environment

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