Almost every word in IT stands for something. It's very interesting to know what it means, because it ends up getting easier to understand what that applies for. E.g: "CODEC" COder / DECoder.
Here you are going to find a list of some abbreviations / acronyms. If what you are looking for is not on my list, you can check out the website http://www.techterms.com/ or http://www.abbreviations.com/ I believe these pages have every single translation for abbreviations, or if you prefer type your word here:
If you would like accurate technology references and definitions use the Webopedia search box below:

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Abbreviations / Acronyms Meaning |
|
| ALU | Arithmetic Logic Unit (Computer Components) |
| BIOS | Basic Input-Output System |
| CPU | Central Processing Unit |
| DLL | Dynamic Link Library |
| DNS | Domain Name System |
| FTP | File Transfer Protocol |
| GIF | Graphics Interchange Format |
| GUI | Graphical User Interface |
| HTML | Hyper Text Markup Language |
| HTTP | Hyper Text Transfer Protocol |
| IBM | International Business Machines |
| ISP | Internet Service Provider (UPC, Eircom) |
| JPEG | Joint Photographic Experts Group |
| LAN | Local Area Network |
| MAC-OS | Macintosh Operating System |
| MJPEG | Motion Joint Photographic Experts Group |
| MODEM | MOdulator/DEModulator |
| MS-DOS | Microsoft Disk Operating System |
| OEMS | Original Equipment Manufactores (Acer, Samsung) |
| PDA | Personal Digital Assitant |
| PNG | Portable Network Graphics |
| RAM | Random Access Memory |
| ROM | Read Only Memory |
| SMTP | Simple Mail Transfer Protocol |
| TCP/IP | Transmission Control Protocol / Internet Protocol |
| TLDs | Top Level Domains (.gov; .edu; .com) |
| USB | Universal Serial Bus |
| URL | Uniform Resource Locator |
| VPN | Virtual Private Network |
| WAN | Wide Area Network |
| WAP | Wireless Application Protocol |
| WIFI | Wireless Fidelity |
| WINDOWS (XP) | Experience |
| WWW | World Wide Web |
| XML | Extensible Markup Language |