# Liste von Abkürzungen (Computer)

Dies ist eine Liste technischer Abkürzungen, die im IT-Bereich verwendet werden.

## A

| AA | Antialiasing |
| AAA | authentication, authorization and accounting, siehe Triple-A-System |
| AAD | Azure Active Directory |
| AAC | Advanced Audio Coding |
| AACS | Advanced Access Content System |
| AAL | ATM Adaptation Layer |
| AAM | ATA/ATAPI Architecture Model |
| | Automatic acoustic management |
| ACC | Adaptive Computing Controller (SAP) |
| ACE | ASCII Compatible Encoding |
| | Access Control Entry (Eintrag in der Access Control List) |
| ACK | acknowledge 'bestätige', siehe ACK (Signal) und Netzjargon |
| ACL | Access Control List |
| ACPI | Advanced Configuration and Power Interface |
| ACR | Advanced Communication(s) Riser oder |
| | Automatic carriage return oder |
| | Attenuation To Crosstalk Ratio |
| ACS | Applied Computer Science (Angewandte Informatik) oder |
| | ATA/ATAPI Command Set (siehe ATA/ATAPI) |
| AD | Active Directory |
| ADAM | Active Directory Application Mode |
| ADAPT | Application Design for Analytical Processing Technologies |
| ADB | Apple Desktop Bus oder |
| | Android Debug Bridge |
| ADC | Apple Display Connector (Variante von DVI) |
| ADDS | Active Directory Domain Services (Erweiterung des früheren Verzeichnisdienstes ADS von Microsoft) |
| ADO | ActiveX Data Objects |
| ADS | Automated Deployment Service oder |
| | Alternate Data Streams |
| ADSL | Asymmetric Digital Subscriber Line, Variante von DSL |
| ADSP | AppleTalk Data Stream Protocol |
| AEG | Ausschalten, einschalten, geht, Tipp zur Problemlösung |
| AEP | AppleTalk Echo Protocol |
| AES | Advanced Encryption Standard |
| AF | Anisotropes Filtern |
| AFK | Away from Keyboard |
| AFP | Apple Filing Protocol |
| AGA | Advanced Graphics Architecture (Amiga-Chipsatz) |
| AGESA | AMD Generic Encapsulated Software Architecture |
| AGP | Accelerated Graphics Port |
| AGU | Address Generation Unit |
| AHCI | Advanced Host Controller Interface |
| AI | Artificial Intelligence (Künstliche Intelligenz, deutsche Abkürzung: KI) |
| AIA | Authority Information Access |
| AIFF | Audio Interchange File Format |
| AIM | AOL Instant Messenger |
| AIR | Adobe Integrated Runtime |
| AIT | Advanced Intelligent Tape |
| AJAX | Asynchronous JavaScript and XML |
| aka | also known as (auch bekannt unter dem Namen …), siehe: Pseudonym |
| ALM | Application Lifecycle Management (u. a. von Borland) |
| ALSA | Advanced Linux Sound Architecture |
| ALU | Arithmetisch-logische Einheit (arithmetisch-logische Einheit, Teil einer CPU) |
| AMD | Advanced Micro Devices |
| AMQP | Advanced Message Queuing Protocol |
| ANSI | American National Standards Institute; auch ANSI-Escapesequenz, vgl. ANSI.SYS |
| AOP | Aspektorientierte Programmierung |
| AOSP | Android Open Source Project |
| AP | Access Point |
| APDU | Application Protocol Data Unit |
| API | Application Programmers/Programming Interface oder |
| | Adaptive Planungsintelligenz |
| APIC | Advanced Programmable Interrupt Controller |
| APIPA | Automatic Private IP Addressing |
| APL | A Programming Language |
| APL | Abschlusspunkt Linientechnik |
| APM | Advanced Power Management |
| APOP | Authenticated Post Office Protocol |
| APP | Application (Applikation) |
| APU | Accelerated Processing Unit |
| AQE | Augmented Quad Edge (Datenstruktur zur Speicherung und effizienten Traversierung eins 3D Voronoi-Diagramms) |
| AR | Augmented Reality |
| ARM | Advanced RISC Machines Ltd. oder |
| | Application Response Measurement |
| ARP | Address Resolution Protocol |
| ARQ | Automatic Repeat reQuest |
| ARS | Adaptive Rate Selection |
| ASCII | American Standard Code for Information Interchange (amerikanische Standardkodierung für den Informationsaustausch) |
| ASIC | Application-Specific Integrated Circuit (anwendungsspezifische integrierte Schaltung) |
| ASN.1 | Abstract Syntax Notation One |
| ASP | Active Server Pages oder |
| | Application Service Providing oder |
| | AppleTalk Session Protocol |
| ASPI | Advanced SCSI Programming Interface |
| AT | Advanced Technology (Bauform für Mainboards und Gehäuse) |
| ATA | Advanced Technology (AT) Attachment |
| ATAPI | AT-Attachment Packet Interface |
| ATM | Asynchronous Transfer Mode oder |
| | Asynchronous Time Multiplexing oder |
| | Adobe Type Manager |
| ATPG | Automatic Test Pattern Generation |
| ATX | Advanced Technology Extended |
| AUI | Attachment Unit Interface |
| AV | Anti-Virus |
| AVI | Audio Video Interleave |

## B

| B | Bell Laboratories oder |
| | Programmiersprache B (Vorgänger von C) |
| B2A | Business-to-Administration |
| B2B | Business-to-Business |
| B2C | Business-to-Consumer |
| B2D | Backup-to-Disk Datensicherung auf Festplatte im Gegensatz zu Backup-to-Tape |
| B2E | Business-to-Employee |
| B2T | Backup-to-Tape Datensicherung auf ein Bandmedium wie DAT, DLT, LTO, … |
| BAM | Block Availability Map, siehe Dateisystem |
| BAPI | Business Application Programming Interface |
| BASIC | Beginner’s All-purpose Symbolic Instruction Code (Programmiersprache) |
| BBS | Bulletin Board System |
| BCC | Blind Carbon Copy (dt. Blindkopie, Feld im Kopf einer E-Mail, das zusätzliche Adressaten enthält, die aber nicht den anderen Adressaten mitgeteilt werden) oder |
| | Block Check Character (dt. Blockprüfzeichen) |
| BCD | Binary Coded Decimal |
| BCPL | Basic Combined Programming Language |
| BD | Blu-ray Disc |
| BDC | Backup Domain Controller oder |
| | Business Data Catalog im Microsoft Office SharePoint Server |
| BDD | Binary Decision Diagram |
| BER | Basic Encoding Rules oder |
| | Bit Error Rate |
| BERT | Bit Error Rate Test (Bitfehlerratentest) |
| BFD | Bidirectional Forwarding Detection |
| BGA | Ball Grid Array |
| BGP | Border Gateway Protocol |
| BiDi | Bidirectional Text Layout, siehe Bidirektionaler Text |
| BI | Business Intelligence |
| BIL | Bus-Interface-Logic |
| BIOS | Basic Input/Output System |
| BLOB | Binary Large Object |
| BNC | Bayonet Neill Concelman, siehe BNC-Steckverbinder |
| BOFH | Bastard Operator From Hell |
| BOM | Byte Order Mark |
| BOOTP | Bootstrap Protocol |
| BOS | Base Operating System (dt. Betriebssystem) |
| BPEL | Business Process Execution Language |
| BSC | Binary Synchronous Communication |
| BSD | Berkeley Software Distribution |
| BSOD | Blue Screen of Death |
| BTO | Build-to-Order |
| BTX | Balanced Technology Extended oder |
| | Bildschirmtext |

## C

| C | Programmiersprache C |
| CAAD | Computer Aided Architectural Design (Computergestütztes architektonisches Planen und Entwerfen) |
| CA | Certificate Authority |
| CAD | Computer-Aided Design (Computerunterstütztes Design) |
| CAE | Computer-aided engineering |
| CAF | Composite Application Framework |
| CAM | Computer-aided manufacturing |
| CAN | Controller Area Network oder |
| | Content Addressable Network |
| CAPI | Common ISDN Application Programming Interface |
| CAPWAP | Control And Provisioning of Wireless Access Points |
| CARP | Common Address Redundancy Protocol |
| CAS | Column Address Strobe: Dynamic Random Access Memory#CAS |
| CAS | Computeralgebrasystem |
| CAT | Catalog Service |
| CAV | Constant Angular Velocity |
| CAVE | Cave Automatic Virtual Environment |
| CAW | Computer-Aided Woodcut (zu Deutsch rechnerunterstützter Holzschnitt) |
| CBO | Cost Based Optimizer, kostenbasierten Optimizer für Zugriffe auf Datenbanksätze |
| CC | Carbon Copy oder |
| | Creative Commons |
| | C Compiler |
| CCD | Charge-coupled Device |
| CC/PP | Composite Capability/Preference Profiles |
| CCU | Camera Control Unit |
| CD | Compact Disc |
| CDATA | Character Data |
| CDC | Connected Device Configuration |
| CDE | Common Desktop Environment |
| CDMA | Code Division Multiple Access |
| CDN | Content Delivery Network |
| CD-R | Compact Disc Recordable |
| CD-ROM | Compact Disc Read-Only Memory |
| CD-RW | Compact Disc ReWriteable |
| CEPT | Conférence Européenne des Administrations des Postes et des Télécommunications |
| CET | Control-flow Enforcement Technology |
| CFML | ColdFusion Markup Language |
| CFSM | Communicating Finite State Machines |
| CGA | Color Graphics Adapter |
| CGI | Common Gateway Interface |
| CHAP | Challenge Handshake Authentication Protocol |
| CHS | Cylinder/Head/Sector |
| CICS | Customer Information Control System |
| CIDR | Classless Inter-Domain Routing |
| CIF | Common Intermediate Format |
| CIFS | Common Internet File System |
| CIM | Computer-integrated manufacturing oder |
| | Common Information Model |
| CISC | Complex Instruction Set Computer |
| CLDC | Connected Limited Device Configuration |
| CLI | Call Level Interface oder |
| | Command Line Interpreter oder |
| | Common Language Infrastructure |
| CLOB | Character Large Object |
| CLM | Certificate Lifecycle Manager |
| CLR | Common Language Runtime |
| CLTS | Connectionless Transport Service, ein verbindungsloser Service, beispielsweise UDP |
| CLV | Constant Linear Velocity |
| CM | Content-Management |
| CMD | Command |
| CMM | Capability Maturity Model oder |
| | Color Management Module |
| CMOS | Complementary Metal Oxide Semiconductor (dt. Komplementärer Metall-Oxid-Halbleiter) |
| CMS | Content-Management-System |
| CMYK | Cyan Magenta Yellow Key, siehe CMYK-Farbmodell |
| CO | Callable Object |
| COBOL | Common Business Oriented Language |
| CODASYL | Conference on Data Systems Languages |
| COM | Component Object Model oder |
| | Computer on Module (Kernhardware eines Computers implementiert auf einem steckbaren Modul) |
| COMA | Cache-only-Memory-Access |
| CORBA | Common Object Request Broker Architecture |
| COTS | Connection Oriented Transport Service, ein verbindungsorientierter Service, wie beispielsweise TCP oder |
| | Commercial off-the-shelf |
| COW | Copy-On-Write, Verfahren zur Vermeidung von überflüssigen Kopien von Daten |
| CPL | Call Processing Language oder |
| | Combined Programming Language oder |
| | Common Public License |
| CP/M | Control Program/Monitor, später: Control Program for Microcomputers |
| CPPM | Content Protection for Pre-Recorded Media, Kopierschutzverfahren der DVD-Audio |
| CPRI | Common Public Radio Interface |
| CPRM | Content Protection for Recordable Media |
| CPSL | Common Pattern Specification Language |
| CPU | Central Processing Unit |
| CPUID | Central Processing Unit Identification |
| CRC | Cyclic Redundancy Check, Verfahren zur Ermittlung von Übertragungsfehlern |
| CRE | Content Relationship Engine |
| CRL | Certificate Revocation List |
| CRM | Customer-Relationship-Management |
| CRT | Cathode Ray Tube |
| CRUD | Create, Read, Update, Delete (Datenbankoperationen) |
| CSA | Common-Scrambling-Algorithmus oder |
| | Connector, Switch, Attenuator theory |
| CSI | Common System Interface |
| CSM | Compatibility Support Module |
| CSMA/CA | Carrier Sense Multiple Access/Collision Avoidance |
| CSMA/CD | Carrier Sense Multiple Access/Collision Detection |
| CSP | Communicating Sequential Processes |
| CSS | Cascading Style Sheets oder |
| | Content Scramble System |
| CSV | Character Separated Values, Comma Separated Values |
| CTF | Capture the Flag |
| CTL | Complex Text Layout |
| CTS | Clear To Send |
| CUDA | Compute Unified Device Architecture |
| CUI | Character User Interface, d. i. Zeichenorientierte Benutzerschnittstelle |
| CUoD | Capacity Upgrade on Demand |
| CUPS | Common Unix Printing System |
| CVS | Concurrent Versions System |
| CVSS | Common Vulnerability Scoring System |
| CWM | Common Warehouse Metamodel |

## D

| D2D2T | Disk to disk to tape (Backup) |
| DAE | Digital Audio Extraction |
| DAL | Data Abstraction Layer |
| DAO | Data Access Objects (Microsoft) oder |
| | Data Access Object (Entwurfsmuster) oder |
| | Disc-At-Once (Schreibmethode) |
| DAP | Directory Access Protocol |
| DAT | Digital Audio Tape |
| DAU | Dümmster anzunehmender User |
| DAU | daily active user – Facebook: täglich aktive(r) Benutzer |
| DAV | Distributed Authoring and Versioning; siehe WebDAV |
| DB | Datenbank |
| DBMS | Database management system (Datenbank-Management-System) |
| DBP | Database Publishing |
| DBS | Datenbank-System |
| DC | Domain Controller oder |
| | Domain Component |
| DCE | Data Communication Equipment oder |
| | Distributed Computing Environment |
| DCIM | Digital Camera Images |
| DCL | Data Control Language oder |
| | DIGITAL Command Language |
| DCO | Device Configuration Overlay (siehe ATA/ATAPI) oder |
| | Dynamic Code Obfuscation |
| DCOM | Distributed Component Object Model |
| DCP | Disk Control Program |
| DCS | Dynamic Channel Selection |
| DCT | Diskrete Cosinus Transformation |
| DCTL | Direct Coupled Transistor Logic |
| DD | Double Density (Diskette) |
| DDC | Display Data Channel |
| DDE | Dynamic Data Exchange |
| DDF | Disk Data Format |
| DDI | Device Driver Interface |
| DDL | Data Definition Language |
| DDoS | Distributed Denial of Service |
| DDR | Double Data Rate |
| DDS | Digital Data Storage oder |
| | Direct Digital Synthesis oder |
| | Direct Draw Surface |
| DDV | Datendirektverbindung |
| DDX | Direct Data Exchange |
| DECT | Digital Enhanced Cordless Telecommunications |
| DENIC | DE Network Information Center |
| DEP | Data Execution Prevention |
| DES | Data Encryption Standard |
| DFS | Distributed File System oder |
| | Dynamic Frequency Selection oder |
| | Depth-First Search |
| DFÜ | Datenfernübertragung (engl.: DUN) |
| DH | Data Highway |
| DHCP | Dynamic Host Configuration Protocol |
| DHTML | Dynamic HTML, Kombination von Hypertext Markup Language und JavaScript |
| DIL | Dual in-line package |
| DIME | Direct Internet Message Encapsulation |
| DIMM | Dual Inline Memory Module |
| DIS | Distributed Interactive Simulation |
| DIT | Directory Information Tree |
| DivX | Digital Video Express |
| DL | Double Layer |
| DLL | Dynamic Link Library |
| DLM | Document Lifecycle Management |
| DLP | Digital Light Processing |
| DLR | Dynamic Language Runtime, siehe .NET |
| DMA | Direct Memory Access |
| DMCA | Digital Millennium Copyright Act |
| DMD | Digital Micromirror Device |
| DMI | Desktop Management Interface oder |
| | Direct Media Interface |
| DML | Data Manipulation Language |
| DMS | Dokumentenmanagementsystem (Document Management System) |
| DMTF | Distributed Management Task Force |
| DMZ | Demilitarized Zone (Demilitarisierte Zone) |
| DNS | Domain Name System |
| DNSBL | DNS-based Blackhole List |
| DoD | Department of Defense |
| DOM | Document Object Model |
| DOS | Disk Operating System oder |
| | Denial of Service (DoS) |
| dpi | Dots per Inch |
| DPA | Data Path Array |
| DPS | Desktop Purchasing System oder |
| | Data Protection System |
| DPU | Data Path Unit |
| DRAC | Dell Remote Access Controller |
| DRAM | Dynamic Random Access Memory |
| DRI | Direct Rendering Infrastructure |
| DRL | Data Retrieval Language |
| DRM | Digital Rights Management |
| DRT | Document Related Technologies |
| DS | double-sided (Diskette oder Speichermodul) |
| DSA | Distributed Systems Architecture oder |
| | Directory System Agent |
| DSL | Digital Subscriber Line oder |
| | Domain Specific Language |
| DSP | Digital Signal Processor |
| DSR | Data Set Ready |
| DSSS | Direct Sequence Spread Spectrum |
| DSSSL | Document Style Semantics and Specification Language |
| DTD | Document Type Definition |
| DTE | Data Terminal Equipment |
| DTM | Dual Transfer Mode |
| DTO | Data Transfer Object |
| DTP | Desktoppublishing |
| DTR | Data Terminal Ready |
| DUA | Directory User Agent |
| DUN | Dial-Up Networking |
| DVB | Digital Video Broadcasting |
| DVB-C | Digital Video Broadcasting – Cable |
| DVB-H | Digital Video Broadcasting – Handhelds |
| DVB-S | Digital Video Broadcast – Satellite |
| DVB-T | Digital Video Broadcasting – Terrestrial |
| DVD | Digital Versatile Disc |
| DVI | Digital Visual Interface |
| DVCS | Distributed Version Control System (Verteilte Versionsverwaltung) |
| DWH | Data-Warehouse |
| DWT | Diskrete Wavelet-Transformation |
| DXF | Drawing Interchange Format (auch Drawing Exchange Format) |

## E

| EA | Enterprise Architecture |
| EAI | Enterprise Application Integration |
| EAM | Enterprise Architecture Management |
| EBCDIC | Extended Binary Coded Decimals Interchange Code |
| EBNF | Extended Backus-Naur Form |
| ECC | Error-correcting code |
| ECM | Enterprise Content-Management |
| ECMA | European Computer Manufacturers Association |
| ECP | Extended Capability Port oder |
| | Encryption Control Protocol |
| ED | Extra-high Density (Diskette) |
| EDD | Enhanced Disk Drive Services (PC-BIOS-Funktionen für den Zugriff auf Festplatten) |
| EDDL | Electronic Device Description Language |
| EDGE | Enhanced Data Rates for GSM Evolution |
| EDI | Electronic Data Interchange |
| EDID | Extended Display Identification Data |
| EDM | Electronic Document Management |
| EDP | Electronic Data Processing |
| EDV | Elektronische Datenverarbeitung, engl.: EDP |
| EEPROM | Electrically Erasable Programmable Read-Only Memory |
| EFI | Extensible Firmware Interface |
| EFS | Encrypting File System |
| EGA | Enhanced Graphics Adapter |
| EHCI | Enhanced Host Controller Interface |
| EIA-232 | Electronic Industries Alliance 232, bekannt als V.24; ursprünglich RS-232 |
| EIB | Europäischer Installationsbus |
| EIDE | Enhanced Integrated Device Electronics |
| EIGRP | Enhanced Interior Gateway Routing Protocol |
| EIS | Entry Into Service |
| EISA | Extended Industry Standard Architecture |
| EIST | Enhanced Intel SpeedStep Technology |
| EJB | Enterprise Java Beans |
| EJBQL | EJB Query Language |
| EL | Expression Language |
| EM64T | Extended Memory 64 Technology, alter Name von Intel 64 |
| EMS | Expanded Memory Specification |
| EMV | Elektromagnetische Verträglichkeit |
| EOD | End Of Discussion (Slang) |
| EOF | End of File oder |
| | Enterprise Objects Framework |
| EOL | End Of Life |
| EPLD | Erasable Programmable Logic Device |
| EPP | Enhanced Parallel Port oder |
| | Encrypting PIN Pad oder |
| | Enhanced Performance Profiles bei RAM |
| EPROM | Erasable Programmable Read Only Memory |
| EPS | Encapsulated PostScript |
| EPSS | Electronic Performance Support System oder |
| | Exploit Prediction Scoring System |
| ESB | Enterprise Service Bus |
| ERP | Enterprise Resource Planning |
| ES | Enterprise Service |
| ESCD | Extended System Configuration Data |
| ESP | EFI System Partition, siehe Definition in GUID Partition Table |
| ESQL | Embedded SQL |
| ESSID | Extended Service Set Identifier |
| ET | Entscheidungstabelle |
| ETB | End of Transmission Block, ein Steuerzeichen bei der Datenübertragung |
| ETL | Extract, Transform, Load |
| EUCS | End User Computing Satisfaction |
| EVA | Eingabe – Verarbeitung – Ausgabe (EVA-Prinzip) oder |
| | Enterprise Virtual Array (Disk Array von Hewlett Packard für mehrere Terabyte Daten) |
| EWF | Enhanced Write Filter, wird bei Windows XP embedded verwendet |
| exFAT | Extended File Allocation Table |
| Exif | Exchangeable Image File Format for Digital Still Cameras |
| Ext2 | Second extended Filesystem |

## F

| FAI | Fully Automatic Installation |
| FAQ | Frequently Asked Questions |
| FAT | File Allocation Table |
| FB | Facebook |
| FC | Fibre Channel |
| FCFS | First-Come First-Served, siehe First In – First Out |
| FD | Floppy Disk |
| FDD | Floppy Disk Drive |
| FDDI | Fiber Distributed Data Interface |
| FDMA | Frequency Division Multiple Access |
| FET | Field Effect Transistor |
| FFT | Fast Fourier Transform (schnelle Fourier-Transformation) |
| FGA | Floating Gate Array |
| FHSS | Frequency Hopping Spread Spectrum |
| FIFO | First In – First Out |
| FILO | First In – Last Out, siehe Last In – First Out |
| FLAC | Free Lossless Audio Codec |
| FLOP | Floating Point Operation (Gleitkommaoperation) |
| FLOPS | Floating Point Operations per Second |
| FPGA | Field Programmable Gate Array |
| FPLA | Field Programmable Logic Array |
| FPS | Frames per Second (Bilder pro Sekunde. Bildfrequenz) oder |
| | First-Person Shooter |
| FPU | Floating Point Unit (Gleitkommaeinheit, numerischer Coprozessor) |
| FQDN | Fully Qualified Domain Name |
| FSAA | Full Scene Antialiasing |
| FSB | Front Side Bus |
| FSM | Finite State Machine |
| FTBFS | Fails to build from source (Debian-Slang) |
| FTP | File Transfer Protocol |
| FTTH | Fibre To The Home |
| FW | Forwarding (bei E-Mails oft benutzt) |

## G

| GAL | Generic Array Logic |
| GAN | Global Area Network |
| GBIC | Gigabit Interface Converter |
| GC | Garbage Collection / Garbage-Collector oder |
| | Global Catalog |
| GCC | GNU Compiler Collection |
| GCR | Group Coded Recording |
| GDDR | Graphics Double Data Rate |
| GFS | Global File System |
| GID | Group Identification, siehe Benutzer- und Rechteverwaltung unter Unix |
| GIF | Graphics Interchange Format |
| GINA | Graphical Identification and Authentication |
| GIS | Geoinformationssystem |
| GLBP | Gateway Load Balancing Protocol |
| GLE | Graphics Layout Engine |
| GLU | OpenGL Utility Library |
| GLUT | OpenGL Utility Toolkit |
| GML | Geography Markup Language |
| GMPLS | Generalized Multiprotocol Label Switching (Weiterentwicklung von MPLS) |
| GNOME | GNU Network Object Model Environment |
| GNU | GNU's Not Unix (ein rekursives Akronym), siehe GNU-Projekt |
| GOOSE | Generic Object Oriented Substation Events |
| GP | Guided Procedures |
| GPG | GNU Privacy Guard |
| GPL | GNU General Public License |
| GPRS | General Packet Radio Service |
| GPT | GUID Partition Table oder |
| | Generative pre-trained transformer |
| GPU | Graphics Processing Unit |
| GPX | GPS Exchange Format |
| GRE | Gecko Runtime Environment oder |
| | Generic Routing Encapsulation |
| GRUB | Grand Unified Bootloader |
| GSM | Global System for Mobile Communications |
| GTK | GIMP-Toolkit |
| GUI | Graphical User Interface |
| GUID | Globally Unique Identifier |

## H

| HAL | Hardware Abstraction Layer |
| HBA | Host-Bus-Adapter |
| HAXM | Intel Hardware Accelerated Execution Manager |
| HBCI | Homebanking Computer Interface |
| HCA | Host Channel Adapter |
| HCI | Human Computer Interaction |
| HCR | Handprint Character Recognition |
| HD | Hard Disk |
| HDCP | High-bandwidth Digital Content Protection |
| HDD | Hard Disk Drive |
| HDE | Hauptverband des Deutschen Einzelhandels |
| HDL | Hardware Description Language |
| HDLC | High-Level Data Link Control |
| HDMI | High Definition Multimedia Interface |
| HDRR | High Dynamic Range Rendering |
| HDTV | High Definition Television |
| HGC | Hercules Graphics Card |
| HHD | Hybrid Hard Disk |
| HID | Human Interface Device |
| HIP | Host Identity Protocol |
| HIPPI | High Performance Parallel Interface |
| HMA | High Memory Area |
| HMD | Head-Mounted Display |
| HMI | Human Machine Interface |
| HPC | High Performance Computing |
| HPET | High Precision Event Timer |
| HPFS | High Performance File System |
| HRHD | High Resolution High Definition |
| HSCSD | High Speed Circuit Switched Data |
| HSDPA | High Speed Downlink Packet Access |
| HSRP | Hot Standby Router Protocol |
| HSUPA | High Speed Uplink Packet Access |
| HT | HyperTransport |
| HTC | High Throughput Computing |
| HTCP | Hyper Text Caching Protocol |
| HTML | Hypertext Markup Language |
| HTPC | Home Theater Personal Computer |
| HTT | Hyper-Threading-Technologie |
| HTTP | Hypertext Transfer Protocol |
| HTTPS | Hypertext Transfer Protocol Secure |

## I

| I18N | Internationalization |
| IaaS | Infrastructure as a Service |
| IA5 | Internationales Alphabet Nr. 5 |
| IANA | Internet Assigned Numbers Authority |
| I$^2$C | Inter-Integrated Circuit |
| ICANN | Internet Corporation for Assigned Names and Numbers |
| ICC | International Color Consortium |
| ICH | I/O Controller Hub |
| ICMP | Internet Control Message Protocol |
| ICS | Internet Connection Sharing |
| ID | Identification |
| IDE | Integrated Development Environment oder |
| | Integrated Drive Electronics, siehe ATA/ATAPI |
| IDEF | Integrated Definition Methods |
| IDF | Intel Developer Forum |
| IDL | Interface Definition Language |
| IDMS | Integrated Database Management System |
| IDN | Internationalized Domain Name |
| IDNA | Internationalizing Domain Names in Applications |
| IED | Intelligent Electronic Device |
| IEEE | Institute of Electrical and Electronics Engineers |
| IETF | Internet Engineering Task Force |
| IFF | Interchange File Format |
| Ig | Instagram |
| IGP | Integrated Graphics Processor |
| IGMP | Internet Group Management Protocol |
| IGRP | Interior Gateway Routing Protocol |
| IIOP | Internet Inter-ORB Protocol |
| IIS | Microsoft Internet Information Services |
| IKE | Internet Key Exchange (siehe IPsec) |
| IKT | Informations- und Kommunikationstechnik |
| ILDA | International Laser Display Association |
| ILM | Information Lifecycle Management |
| IMAP | Internet Message Access Protocol |
| IMC | Internet Mail Connector (siehe Microsoft Exchange Server) |
| IMQ | Intermediate Queuing Device |
| IMS | Information Management System |
| INET | Internet |
| Intel | Integrated Electronics |
| IP | Internet Protocol |
| IPC | Inter-Process Communication oder |
| | Instructions per cycle |
| IPP | Internet Printing Protocol |
| IPPD | Integrated Product and Process Development |
| IPPP | ISDN Point-to-Point Protocol |
| IPS | Instructions per Second oder |
| | Intrusion-Prevention-System |
| IPSec | Internet Protocol Security |
| IPT | Intel Identity Protection Technology |
| IPTV | Internet-Protokoll-Fernsehen |
| IPX | Internetwork Packet Exchange |
| IRC | Internet Relay Chat |
| IrDA | Infrared Data Association |
| IRQ | Interrupt Request |
| IRTF | Internet Research Task Force |
| IRV | Internationale Referenzversion (des IA5) |
| ISA | Industry Standard Architecture |
| iSCSI | Internet SCSI |
| ISDN | Integrated Services Digital Network |
| ISO | Internationale Organisation für Normung |
| ISO-C | Variante von C |
| ISP | Internet Service Provider |
| ISSE | Internet Streaming SIMD Extensions |
| IT | Informationstechnik / Information Technology |
| ITIL | ITIL |
| ITU | International Telecommunication Union (Internationale Fernmeldeunion) |
| IxD | Interaction Design |

## J

| J2EE | Java Platform, Enterprise Edition |
| J2ME | Java Platform, Micro Edition |
| J2SE | Java Platform, Standard Edition |
| JACK | JACK Audio Connection Kit |
| JAXP | Java API for XML Processing |
| JCL | Job Control Language |
| JDBC | Java Database Connectivity |
| JDF | Job Definition Format |
| JDIC | JDesktop Integration Components |
| JDK | Java Development Kit |
| JES | Job Entry Subsystem |
| JEU | Jump Execution Unit |
| JFS | Journaled File System |
| JMF | Java Media Framework |
| JMS | Java Message Service |
| JNDI | Java Naming and Directory Interface |
| JNLP | Java Network Launching Protocol |
| JOLAP | Java Based OLAP interface |
| JPEG | Joint Photographic Experts Group |
| JRE | Java Runtime Environment |
| JS | JavaScript |
| JSF | JavaServer Faces |
| JSON | JavaScript Object Notation |
| JSP | JavaServer Pages |
| JSR | Java Specification Request |
| JTM | Job Transfer and Manipulation |
| JVM | Java Virtual Machine |

## K

| KDE | K Desktop Environment |
| KI | Künstliche Intelligenz |
| KM | Konfigurationsmanagement oder |
| | Knowledge Management |
| KML | Keyhole Markup Language |
| KRA | Key Recovery Agent |
| KVM | Keyboard – Video – Mouse |

## L

| L10n | Localization |
| L2TP | Layer 2 Tunneling Protocol |
| LACP | Link Aggregation Control Protocol |
| LADSPA | Linux Audio Developer’s Simple Plugin API |
| LAMP | Linux-Apache-MySQL-PHP |
| LAN | Local Area Network |
| LAT | Local Area Transport |
| LBA | Logical Block Addressing |
| LCD | Liquid Crystal Display |
| LCN | Local Control Network |
| LCoS | Liquid Crystal on Silicon |
| LCR | Least Cost Router |
| LDAP | Lightweight Directory Access Protocol |
| LDS | Lightweight Directory Services |
| LDU | Logical Data Unit |
| LED | Light Emitting Diode |
| LER | Label Edge Router |
| LFS | Large File Support oder |
| | Linux From Scratch |
| LFSR | Linear Feedback Shift Register |
| LGA | Land Grid Array |
| LIFO | Last In – First Out |
| LILO | Linux Loader oder |
| | Last In – Last Out (s. a. First In – First Out) |
| LISP | List Processing |
| LLC | Logical Link Control |
| LON | Local Operating Network |
| LP | Line Printer (Zeilendrucker, s. a. Drucker) |
| LPC | Low Pin Count |
| LPP | Licensed Product Package |
| LPT | Line Printer |
| LRU | Least recently used |
| LS120 | Laser Servo Disk |
| LSA | Local Security Authority |
| LSASS | Local Security Authority Subsystem |
| LSB | Least Significant Bit |
| LSR | Label Switch Router |
| LTE | Long Term Evolution |
| LTS | Long Term Support |
| LUG | Linux User Group |
| LUN | Logical Unit Number |
| LVDS | Low Voltage Differential Signaling |
| LVM | Logical Volume Manager |

## M

| M2M | Machine-to-Machine |
| M4A | MPEG-4 Audio |
| MAC | Media Access Control |
| MAC | Machine Authentication Code |
| MAK | Multiple Activation Key |
| MAPI | Messaging Application Programming Interface |
| MAN | Metropolitan Area Network |
| MAU | Monthly Active User – Facebook: monatlich aktive(r) Benutzer oder |
| | Multistation Access Unit |
| MBR | Master Boot Record |
| MCA | Micro Channel Architecture |
| MCF | Meta Content Framework |
| MCH | Memory Controller Hub |
| MCM | Multi-Chip-Modul |
| MCP | Multi Chip Package, siehe Multi-Chip-Modul oder |
| | Master Control Program (Betriebssystem von Burroughs) oder |
| | Media Communications Processor (von Nvidia entwickelter Prozessor) |
| MCX | Media Center Extender |
| MDAC | Microsoft Data Access Components |
| MDCT | Modifizierte diskrete Kosinustransformation oder |
| | Multi-detector Computed Tomography oder |
| | Multislice Detector Computed Tomography oder |
| | Multi-row-detector Computed Tomography |
| MFM | Modified Frequency Modulation |
| MFT | Master File Table |
| MFU | Most Frequently Used |
| MHP | Multimedia Home Platform |
| MIDI | Musical Instrument Digital Interface |
| MIDS | Multifunctional Information Distribution System |
| MII | Media Independent Interface |
| MIIS | Microsoft Identity Integration Server |
| MIMD | Multiple-Instruction Multiple-Data |
| MIME | Multipurpose Internet Mail Extensions |
| MIPS | Million Instructions per Second oder |
| | Microprocessor without interlocked pipeline stages |
| MKV | Matroska Video |
| MMI | Man Machine Interface, siehe Mensch-Maschine-Schnittstelle |
| MMORPG | Massively Multiplayer Online Role-Playing Game |
| MMS | Multimedia Messaging Service |
| MMU | Memory Management Unit |
| MMX | Multi Media Extension |
| MOD | Magneto Optical Disc |
| MOO | Mud object oriented |
| MOST | Media Oriented System Transport |
| MP3 | MPEG-1 Audio Layer 3 |
| MP4 | MPEG-4 |
| MPEG | Moving Picture Experts Group |
| MPI | Message Passing Interface |
| MPLS | Multiprotocol Label Switching |
| MPP | Massively Parallel Processing |
| MP/M | Multi-User Version des CP/M (Control Program for Microcomputers) |
| MPU | Micro Processor Unit (siehe Mikroprozessor) oder |
| | Memory Protection Unit |
| MQTT | Message Queue Telemetry Transport |
| MR | Mixed Reality |
| MRAM | Magnetoresistive Random Access Memory |
| MRCP | Media Resource Control Protocol |
| MRU | Maximum Receive Unit oder |
| | Most Recently Used |
| M$ | Slang für Microsoft |
| MSB | Most Significant Bit |
| MSDN | Microsoft Developer Network |
| MSDNAA | MSDN Academic Alliance |
| MSIMD | Multiple Single Instruction Multiple Data |
| MSN | Microsoft Network oder |
| | Multiple Subscriber Number |
| MTA | Mail Transfer Agent |
| MTBF | Mean Time Between Failures |
| MTU | Maximum Transmission Unit |
| MUA | Mail User Agent |
| MUD | Multi User Dungeon |
| MVC | Model View Controller |
| MX | Mail Exchange Resource Record |
| MZR | Multiple Zone Recording |

## N

| NAC | Network Access Control |
| NAL | Network Abstraction Layer |
| NAN | National Area Network |
| NAS | Network Attached Storage |
| NAT | Network Address Translation |
| NBD | Network Block Device |
| NCP | NetWare Core Protocol |
| NCQ | Native Command Queuing |
| NDES | Network Device Enrollment Service |
| NDIS | Network Driver Interface Specification |
| NDS | Novell Directory Services |
| NEDC | New Enterprise Data Center |
| NEXT | Near End Crosstalk |
| NFS | Network File System |
| NGSCB | Next Generation Secure Computing Base |
| NIC | Network Information Center oder |
| | Network Interface Card |
| NNTP | Network News Transfer Protocol |
| NOC | Network Operation Center |
| NRU | Not Recently Used (siehe Paging) |
| NRZ | Non Return to Zero (auch NRZI = Non Return to Zero Invert) |
| NSS | Name Service Switch |
| NTBA | Network Termination for ISDN Basic rate Access |
| NTFS | New Technology File System |
| NTP | Network Time Protocol |
| NTSC | National Television Standards Committee |
| NUI | Natural User Interface |
| NUMA | Non-Uniform Memory Access |
| NVE | Networked Virtual Environment |
| NVRAM | Non Volatile Random Access Memory |
| NWDS | NetWeaver Developer Studio |

## O

| OAN | Open Access Network |
| OASIS | Organization for the Advancement of Structured Information Standards |
| OCI | Open Catalog Interface |
| OCP | Überstromschutz (Over Current Protection) |
| OCR | Optical Character Recognition |
| OCSP | Online Certificate Status Protocol |
| ODBC | Open DataBase Connectivity |
| ODD | Optical Disk Drive |
| ODMC | On Demand Clock Modulation |
| ODMG | Object Database Management Group |
| ODR | Octal Data Rate |
| OEM | Original Equipment Manufacturer |
| OFDM | Orthogonal Frequency Division Multiplexing |
| OGC | Open Geospatial Consortium (vormals OpenGIS Consortium) |
| OHCI | Open Host Controller Interface |
| OLAP | Online Analytical Processing |
| OLE | Object Linking and Embedding |
| OLED | Organic Light Emitting Diode |
| OLSR | Optimized Link State Routing |
| OLTP | Online Transaction Processing |
| OOA | Objektorientierte Analyse |
| OOD | Objektorientierte Design |
| OODBMS | Object-Oriented DataBase Management System |
| OOo | OpenOffice.org |
| OOP | Objektorientierte Programmierung |
| ooREXX | Open Object Restructured Extended Executor Language |
| OPC | Operation Planning and Control oder |
| | OLE for Process Control |
| OQL | Object Query Language |
| ORDBMS | Object-Relational DataBase Management System |
| OS | Operating System |
| OSA | Open Systems Architecture |
| OSGi | Open Services Gateway Initiative |
| OSI | OSI-Modell (Open Systems Interconnection) |
| OSPF | Open Shortest Path First |
| OSS | Open Sound System oder |
| | Open-Source-Software |
| OSSD | Output Signal Switching Device |
| | Open-source software development |
| OU | Organizational Unit, eine Teilstruktur einer Organisation, z. B. eine Abteilung |
| OWS | OpenGIS Web Service (siehe Open Geospatial Consortium) |

## P

| P2PTV | Peer-to-Peer-TV |
| P2P | Peer-to-Peer |
| PaaS | Platform as a Service |
| PADI | PPPoE Active Discovery Initiation |
| PAG | Program Analyzer Generator |
| PAL | Programmable Array Logic oder |
| | Phase Alternating Line |
| PaLM | Pathways Language Model |
| PAM | Pluggable Authentication Module oder |
| | Programmable Attribute Map |
| PAN | Personal Area Network |
| PAP | Password Authentication Protocol oder |
| | Printer Access Protocol oder |
| | Programmablaufplan |
| PATMOS | Power And Timing Modelling, Optimization and Simulation |
| PBCC | Packet Binary Convolution Coding |
| PC | Personal Computer oder |
| | Program Counter |
| PCA | Programmable Counter Array |
| PCB | Process Control Block oder |
| | Printed Circuit Board (Platine) |
| PCI | Peripheral Component Interconnect |
| PCIe/PCI-E | Peripheral Component Interconnect Express |
| PCI-X | Peripheral Component Interface Extension |
| PCMCIA | Personal Computer Memory Card International Association |
| PC/SC | Personal Computer/Smart Card |
| PDA | Personal Digital Assistant |
| PDC | Primary Domain Controller |
| PDF | Portable Document Format |
| PDM | Product Data Management |
| PDU | Protocol Data Unit oder |
| | Power Distribution Unit |
| PEBKAC | Problem Exists Between Keyboard And Chair |
| PEG | PCI Express for Graphics |
| PFS | Perfect Forward Secrecy |
| PGA | Pin Grid Array |
| PGP | Pretty Good Privacy |
| PHP | PHP: Hypertext Preprocessor (rekursives Akronym) |
| PI | Process Integration |
| PIA | Peripheral Interface Adapter |
| PIC | Participant Identification Code |
| PIC | Programmable Interrupt Controller |
| PID | Personally-Identifiable Data oder |
| | Process identifier |
| PIM | Personal Information Manager |
| PIMF | Pair In Metal Foil |
| PING | Packet Inter-Network Groper |
| PIO | Programmed Input/Output |
| PKI | Public Key Infrastructure |
| PL/I | Programming Language One |
| PLA | Programmable Logic Array |
| PLM | Product-Lifecycle-Management |
| PLMA | Private Label Manufacturers Association |
| PMF | Pointer to Member Function (Datentyp der Programmiersprache C++) |
| PMU | Power Management Unit |
| PNG | Portable Network Graphics |
| PnP | Plug and Play |
| PoE | Power over Ethernet |
| POF | Polymere optische Faser |
| POCO | Plain old CLR object |
| POJO | Plain Old Java Object |
| POP | Post Office Protocol |
| POP3 | Post Office Protocol Version 3 |
| POSIX | Portable Operating System Interface for UniX |
| POST | Power On Self-Test |
| POTS | Plain Old Telephone System |
| PPD | PostScript Printer Description |
| PPI | Pixel per Inch |
| PPP | Point-to-Point Protocol |
| PPPoE | PPP over Ethernet |
| PPTP | Point-to-Point Tunneling Protocol |
| PPU | Physics Processing Unit |
| PRBS | Pseudo-random bit stream |
| PS | PostScript |
| PSA | Pseudo Application als Microsoft-Office-2007-Dokument, wie PowerPoint oder Excel |
| PSACR | Power Sum Attenuation to Crosstalk Ratio |
| PSAI | Pseudo Application Interface, liefert Daten in Echtzeit an andere Anwendungen oder andere Hardware |
| PSD | Photoshop Document |
| PSNEXT | Power Sum Near End Crosstalk |
| PSTN | Public Switched Telephone Network |
| PVC | Permanent Virtual Circuit |
| PWM | Pulse Width Modulation |
| PXE | Preboot Execution Environment |

## Q

| QDR | Quadruple Data Rate, Weiterentwicklung von Double Data Rate |
| QPI | QuickPath Interconnect |
| QoS | Quality of Service |
| QUXGA | Quad Ultra Extended Graphics Array |
| QVGA | Quarter Video Graphics Array |
| QWUXGA | Quad Wide Ultra Extended Graphics Array |
| QXGA | Quad Extended Graphics Array |

## R

| RACI | Responsible Accountable Consulted Informed |
| RAD | Rapid Application Development |
| RAID | Redundant Array of Independent Disks, ursprünglich Redundant Array of Inexpensive Disks |
| RADIUS | Remote Authentication Dial-In User Service |
| RAM | Random-Access Memory |
| RAR | Resource Adapter |
| RARP | Reverse Address Resolution Protocol |
| RAS | Remote Access Service |
| RAS | Row Address Strobe |
| RBL | Realtime Blackhole List |
| RBO | Rule Based Optimizer |
| RCP | Rapid Control Prototyping oder |
| | Rich-Client-Platform oder |
| | Remote Copy Protocol |
| RDBMS | Relational Database Management System |
| RDF | Resource Description Framework |
| RDP | Remote Desktop Protocol |
| RED | Random Early Detection |
| REST | Representational State Transfer |
| REU | RAM Expansion Unit |
| REXX | Restructured Extended Executor Language |
| RFC | Request for Comments |
| RFC | Remote Function Call |
| RFID | Radio Frequency Identification |
| RGB | Red Green Blue (Rot Grün Blau) |
| RI | Ring Indicator |
| RIA | Rich Internet Application |
| RIMM | Rambus In-Line Memory Modul |
| RID | Relative Identifier |
| RIP | Routing Information Protocol oder |
| | Raster Image Process |
| RISC | Reduced Instruction Set Computer |
| RLE | Run-length encoding |
| RLL | Run Length Limited |
| RMI | Remote Method Invocation |
| RMS | Rights Management Services |
| ROI | Region of Interest (in der Bildverarbeitung) |
| ROM | Read Only Memory |
| RPC | Remote Procedure Call |
| RPG | Role Playing Game oder |
| | Report Program Generator |
| RPM | RPM Package Manager (rekursives Akronym, ehemals RedHat Package Manager) |
| RPS | Rights Protection System |
| RS-232 | Recommended Standard 232, eigentlich: Radio Sector 232, heute: EIA-232 |
| RSA | Rivest, Shamir, Adleman |
| RSH | Remote Shell |
| RSS | Really Simple Syndication |
| RSTP | Rapid Spanning Tree Protocol |
| RTC | Real Time Clock |
| RTF | Rich-Text-Format |
| RTFM | Read The Fucking Manual |
| RTL | Register Transfer Level (Ebene in Hardware / Hardware-Modellierung) |
| RTOS | Realtime Operating System |
| RTP | Realtime Transport Protocol |
| RTS | Request To Send |
| RTSI | Real Time System Integration |
| RTSP | Real-Time Streaming Protocol |
| RTTI | Runtime Type Information |
| RUE | Rich User Experiences |

## S

| SAA | Systems Application Architecture |
| SaaS | Software as a Service |
| SACD | Super Audio Compact Disc |
| SAFT | Simple Asynchronous File Transfer |
| SAM | Security Account Manager |
| SAN | Storage Area Network oder |
| | System Area Network |
| SANE | Scanner Access Now Easy oder |
| | Standard Apple Numeric Environment |
| SAS | Serial Attached SCSI |
| SASL | Simple Authentication and Security Layer |
| SASS | Syntactically Awesome Style Sheet |
| SAT | SCSI/ATA Translation |
| SATA | Serial ATA |
| SATL | SCSI/ATA Translation Layer (siehe SCSI/ATA Translation) |
| SAX | Simple API for XML |
| SBC | Session Border Controller oder |
| | single-board computer |
| SBP-2 | Serial Bus Protocol, Protokoll aus der IEEE1394- bzw. Firewire- bzw. iLink-Welt |
| SCAM | SCSI Configuration AutoMatically |
| SCEP | Simple Certificate Enrollment Protocol |
| SCP | Secure Copy Protocol |
| SCPI | Standard Commands for Programmable Instruments |
| SCSA | Secure Content Storage Association |
| SCSI | Small Computer System Interface |
| SCUMM | Script Creation Utility for Maniac Mansion |
| SD | Single Density (Diskette) |
| SDF | Synchronous Data Flow |
| SDH | Synchronous Digital Hierarchy |
| SDK | Software Development Kit oder |
| | System Design Kit |
| SDL | Service Description Language (siehe Web Services Description Language) oder |
| | Simple DirectMedia Layer oder |
| | Specification and Description Language |
| SDLC | Synchronous Data Link Control oder |
| | Software Development Life Cycle |
| SDR | Single Data Rate |
| SDSL | Symmetric Digital Subscriber Line (Variante von DSL) |
| SEO | Search Engine Optimization |
| SFF | Small Form Factor |
| SFP | Small Form-factor Pluggable (umgangssprachlich auch mini-GBIC) |
| SFTP | Secure File Transfer Protocol |
| SGML | Standard Generalized Markup Language |
| SHFS | Shell File System |
| SHTTP | Secure Hyper Text Transport Protocol |
| SIM | Subscriber Identity Module |
| SIMD | Single Instruction Multiple Data |
| SIMM | Single Inline Memory Module |
| SIP | Session Initiation Protocol oder |
| | Sideway Information Passing |
| SIPP | Single Inline Pin Package (siehe Single Inline Memory Module) |
| SIS | Single Instance Storage |
| SL | Microsoft Silverlight |
| SLA | Service-Level-Agreement |
| SLAM | Simultaneous Localization and Mapping |
| SLD | Second Level Domain oder |
| | Styled Layer Descriptor |
| SLI | Scalable Link Interface |
| SLIP | Serial Line Internet Protocol |
| SLL | Static Link Library |
| SLNP | Simple Library Network Protocol |
| SLP | Service Location Protocol |
| SLR | Scalable Linear Recording |
| SMAP | Simple Mail Access Protocol |
| SMART | Self-Monitoring, Analysis and Reporting Technology |
| SMASH | Systems Management Architecture for Server Hardware |
| SMB | System Management Bus oder |
| | Server Message Block |
| SMBIOS | Systems Management BIOS |
| SMD | Surface Mounted Device |
| SMIL | Synchronized Multimedia Integration Language |
| SMI-S | Storage Management Initiative – Specification |
| SML | Standard ML oder |
| | System Management Language |
| S/MIME | Secure / Multipurpose Internet Mail Extensions |
| SMP | Symmetric Multi-Processing, siehe Symmetrisches Multiprozessorsystem |
| SMS | Short Message Service |
| SMT | Simultaneous Multithreading |
| SMTP | Simple Mail Transfer Protocol |
| S/N | Serial Number |
| SNA | Systems Network Architecture (IBM-Großrechner) |
| SNMP | Simple Network Management Protocol |
| SOA | Service Oriented Architecture oder |
| | Start of Authority (im DNS, siehe SOA Resource Record) |
| SOAP | Simple Object Access Protocol |
| SOX | Sarbanes-Oxley Act |
| S/PDIF | Sony/Philips Digital Interface |
| SPDX | Software Package Data Exchange |
| SPEC | Standard Performance Evaluation Corporation |
| SPEWS | Spam Prevention Early Warning System |
| SPF | Sender Policy Framework |
| SPI | Serial Peripheral Interface |
| SPLC | Secure Product Lifecycle |
| SPM | Scratch Pad Memory |
| SPoF | Single Point of Failure |
| SPP | System Platform Processor (NVIDIAs Gegenstück zu Intels MCH) |
| | Standard Parallel Port |
| SPW | Satisfaction per watt (Von Intel vorgeschlagene, objektivere Kennzahl als PPW (Performance per Watt)) |
| SQL | Structured Query Language (Strukturierte Abfragesprache), Datenbankabfragesprache |
| SRAM | Static Random Access Memory |
| SRM | Service Resolution Management |
| SRP | Secure Remote Password, Sicherheitsstandard für Authentifizierungsverfahren oder |
| | Software Restriction Policies |
| SS | single-sided (Diskette oder Speichermodul) |
| SSD | Solid-State-Drive |
| SSE | Streaming SIMD Extensions |
| SSH | Secure Shell |
| SSHD | Solid State Hybrid Drive |
| SSI | Server Side Includes |
| SSID | Service Set Identifier |
| SSL | Secure Sockets Layer oder |
| | Syntax/Semantic Language |
| SSO | Single Sign-on |
| ST | Simple Transformations |
| STFW | Search the fucking web |
| STP | Shielded Twisted Pair |
| STUN | Simple traversal of UDP over NATs |
| SUXGA | Super Ultra Extended Graphics Array |
| SVCD | Super Video Compact Disc |
| SVDRP | Simple Video Disk Recorder Protocol |
| SVG | Scalable Vector Graphics |
| SVGA | Super Video Graphics Array |
| SVN | Subversion |
| SXGA | Super Extended Graphics Array |

## T

| Tcl | Tool command language |
| TC | Turbo Cache |
| TCO | Total Cost of Ownership |
| TCP | Transmission Control Protocol |
| TCPA | Trusted Computing Platform Alliance |
| TCP/IP | Transmission Control Protocol / Internet Protocol |
| TDMA | Time Division Multiple Access |
| TDP | Thermal Design Power |
| TEDS | Transducer Electronic Data Sheet |
| TFT | Thin Film Transistor |
| TFTP | Trivial File Transfer Protocol |
| TIPC | Transparente Inter-Process Communication |
| TKIP | Temporal Key Integrity Protocol |
| TLB | Translation Lookaside Buffer |
| TLD | Top-Level-Domain oder |
| | Tag Library Descriptor |
| TLM | Transaction Level Modelling |
| TLS | Transport Layer Security |
| TM | Transactional Memory |
| TOS | The Operating System oder |
| | Tramiel Operating System (Betriebssystem der Atari-Computer) |
| TPC | Transmitter Power Control oder |
| | Transaction Processing Performance Council |
| TPI | Tracks Per Inch |
| TPM | Trusted Platform Module |
| TPoX | Transaction Processing over XML |
| TRT | Total Recovery Time |
| TS | Timeserver oder |
| | Terminal Server oder |
| | TeamSpeak oder |
| | Transport Stream |
| TSC | Time Stamp Counter |
| TSP | Traveling Salesman Problem |
| TSO | Time-Sharing Option |
| TTL | Time-to-live oder |
| | Transistor-Transistor-Logik |
| TV | Television |
| TWAIN | Toolkit Without An Interesting Name |
| TWI | Two-wire Interface |

## U

| UAA | Universal Audio Architecture |
| UAC | User Account Control |
| UART | Universal Asynchronous Receiver Transmitter |
| UAT | User Acceptance Test |
| UBE | Unsolicited Bulk Email |
| UC | Unified Communications |
| UCD | User Centered Design |
| UCE | Unsolicited Commercial E-Mail |
| UCP | Universal Computer Protocol |
| UCS | Universal Coded Character Set |
| UDDI | Universal Description, Discovery and Integration |
| UDF | Universal Disk Format |
| UDF | User Defined Function |
| UDMA | Ultra-Direct Memory Access |
| UDP | User Datagram Protocol oder |
| | Usenet Death Penalty |
| UEFI | Unified Extensible Firmware Interface |
| UFS | Unix File System |
| UHCI | Universal Host Controller Interface |
| UI | User Interface oder |
| | User Interaction |
| UID | User Identifier (siehe Benutzerkennung) oder |
| | User Interface Design |
| UMA | Uniform Memory Access oder |
| | Unified Memory Architecture oder |
| | Universal Multimedia Access |
| UMB | Upper Memory Block |
| UMDF | User-Mode Driver Framework |
| UML | Unified Modeling Language |
| UMTS | Universal Mobile Telecommunications System |
| UPnP | Universal Plug and Play |
| UPS | Uninterruptible Power Supply |
| URI | Uniform Resource Identifier |
| URL | Uniform Resource Locator |
| USB | Universal Serial Bus |
| USV | Unterbrechungsfreie Stromversorgung |
| UTF | Unicode Transformation Format |
| UTM | Unified threat management |
| UTP | Unshielded Twisted Pair |
| UUG | Unix User Group |
| UUID | Universally Unique Identifier |
| UWB | Ultra Wide Band |
| UXD | User Experience Design (siehe User Experience) |
| UXGA | Ultra Extended Graphics Array |

## V

| VAFC | VESA Advanced Feature Connector |
| VB | Visual Basic – in den 2 Varianten Visual Basic Classic (steht für die VB-Versionen bis VB6) und Visual Basic .NET (mit der Abkürzung VB.NET) |
| VBA | Visual Basic for Applications |
| VBS | Visual Basic Script |
| VC | Visual Composer |
| VCD | Video-CD oder virtual channel descriptor |
| VCI | virtual channel identifier |
| VCS | Version Control System (Versionsverwaltung) |
| VDR | Video Disk Recorder (Festplattenrekorder) |
| VDSL | Very High Speed Digital Subscriber Line (Variante von DSL) |
| VESA | Video Electronics Standards Association |
| VFAT | Virtual FAT |
| VFC | VESA Feature Connector |
| VFS | Virtual Filesystem Switch |
| VGA | Video Graphics Array |
| VHDL | Very High Speed Integrated Circuit Hardware Description Language |
| VIM | Vi IMproved |
| VLAN | Virtual Local Area Network |
| VLB | VESA Local Bus |
| VLIW | Very Long Instruction Word |
| VLSI | Very Large Scale Integration |
| VM | Virtuelle Maschine |
| VMS | Virtual Memory System |
| VNC | Virtual Network Computing |
| VO | Virtual Organisation (im Grid-Computing) |
| VoIP | Voice over IP |
| VP | Visual Programming |
| VPI | Virtual Path Identifier |
| VPL | Visual Programming Language |
| VPN | Virtual Private Network |
| VR | Virtual Reality |
| VRAM | Video Random Access Memory |
| VRML | Virtual Reality Modeling Language |
| VRRP | Virtual Router Redundancy Protocol |
| VSAM | Virtual Storage Access Method (IBM-Großrechner) |
| VST | Virtual Studio Technology |
| VTAM | Virtual Terminal Access Method (IBM-Großrechner) |
| VTS | Virtual Tape Server |
| VXLAN | Virtual Extensible LAN |

## W

| W2K | Windows 2000; „2k“ (Aussprache: ˈtuː ˈkeɪ), eine im Englischen gebräuchliche Abkürzung, bedeutet 2 Kilo: 2 × 1.000, also 2.000 |
| W2Kx | Windows 2Kx (Windows 2003 = W2K3, Windows 2008 = W2K8) |
| W3C | World Wide Web Consortium |
| WAIS | Wide Area Information Servers |
| WAMP | Windows-Apache-MySQL-PHP oder |
| | Windows-Apache-MySQL-Perl |
| WAN | Wide Area Network |
| WAP | Wireless Application Protocol |
| WBEM | Web-Based Enterprise Management |
| WCM | Web Content Management |
| WCS | Web Coverage Service |
| WDDX | Web Distributed Data Exchange |
| WDS | Wireless Distribution System |
| WEP | Wired Equivalent Privacy |
| WFS | Web Feature Service |
| WIDL | Web Interface Definition Language |
| WIMP | WIMP (Benutzerschnittstelle) für Windows, Icons, Menus, Pointing device |
| WINE | Wine Is Not an Emulator (rekursives Akronym) |
| WINS | Windows Internet Naming Service |
| WISP | Wireless Internet Service Provider |
| WLAN | Wireless Local Area Network (Kabelloses Lokales Netzwerk) |
| WLL | Wireless Local Loop |
| WMA | Windows Media Audio |
| WML | Wireless Markup Language |
| WMM | Wireless Multimedia |
| WMS | Web Map Service |
| WOL | Wake on LAN |
| WORM | Write Once Read Multiple |
| WPA | Wi-Fi Protected Access |
| WQVGA | Wide Quarter Video Graphics Array |
| WRS | Web Registry Service |
| WS-CDL | WS-Choreography Description Language |
| WSDL | Web Services Description Language |
| WSDM | WS-Distributed Management |
| WSH | Windows Scripting Host |
| WSRF | WS-Resource Framework |
| WSRM | WS-Reliable Messaging |
| WSUXGA | Wide Super Ultra Extended Graphics Adapter |
| WSVGA | Wide Super Video Graphics Array |
| WSXGA | Wide Super Extended Graphics Array |
| WTS | Windows Terminal Server (Terminalserver) |
| WUXGA | Wide Ultra Extended Graphics Array |
| WVGA | Wide Video Graphics Array |
| WWAN | Wireless Wide Area Network |
| WWW | World Wide Web |
| WXGA | Wide Extended Graphics Array |
| WYSISLWYG | What You See Is Sort-of Like What You Get (sprich: wiesel-wig) (deutsch: „Was Du siehst ist in etwa wie das, was du bekommst“), zynische Bezeichnung für WYSIWYG-Programme, die nicht halten, was sie versprechen |
| WYSIWYG | What You See Is What You Get (sprich: wi-zi-wig) (deutsch: „Was du siehst ist was du bekommst“). Bezeichnung für graphische HTML-Editor und Textverarbeitungsprogramme, bei denen das gedruckte Ergebnis genau so aussieht wie auf dem Bildschirm |

## X

| X3D | Extensible 3D (VRML-Nachfolger) |
| XAML | eXtensible Application Markup Language |
| XAMPP | Extended Apache/MySQL/PHP/Perl |
| XGA | Extended Graphics Array |
| xHCI | Extensible Host Controller Interface |
| XHTML | Extensible Hypertext Markup Language |
| XI | Exchange Infrastructure (Seit SAP NetWeaver 7.0: PI – Process Integration) |
| XILP | XILP: Internet Links People |
| XML | Extensible Markup Language |
| XML-RPC | Extensible Markup Language Remote Procedure Call |
| XMPP | Extensible Messaging and Presence Protocol |
| XMS | Extended Memory Specification |
| XMSF | Extensible Modeling and Simulation Framework |
| XOG | XML Open Gateway |
| XR | Extended Reality |
| XrML | Extensible rights Markup Language |
| XSD | XML Schema Definition |
| XSL | Extensible Stylesheet Language |
| XSL-FO | Extensible Stylesheet Language – Formatting Objects |
| XSLT | XSL Transformation |
| XSS | Cross-Site-Scripting |
| XT | Extended Technology |

## Y

| Y2K | Year 2000; „2k“ (Aussprache: ˈtuː ˈkeɪ), eine im Englischen gebräuchliche Abkürzung, bedeutet 2 Kilo: 2 × 1.000, also 2.000 |
| YAGNI | You Ain’t Gonna Need It |
| YaST | Yet another Setup Tool |

## Z

| ZBR | Zone Bit Recording |
| ZKS | Zylinder/Kopf/Sektor, siehe CHS-Adressierung |
| ZFS | Zettabyte File System |
| ZOI | Zero One Infinity |