Computer Abbreviations Cheat Sheet
1 Nov 2026
Quick answer
A quick revision cheat sheet on computer abbreviations and full forms for SSC, Banking, Railway and state exams. It gathers the most-asked full forms for hardware, memory, files, networking and the web in one place, grouped for easy recall, so you can revise the computer-awareness section quickly before the exam.
Computer Abbreviations Cheat Sheet
Quick Revision
Exams ask the full form of common computer abbreviations. Here are the ones most often tested, grouped so they are easy to recall.
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1. Hardware and Processing
| Short | Full form |
|---|---|
| CPU | Central Processing Unit |
| ALU | Arithmetic Logic Unit |
| RAM | Random Access Memory |
| ROM | Read Only Memory |
| BIOS | Basic Input Output System |
| USB | Universal Serial Bus |
2. Files and Display
| Short | Full form |
|---|---|
| Portable Document Format | |
| GUI | Graphical User Interface |
| OS | Operating System |
| GB / MB / KB | Gigabyte / Megabyte / Kilobyte |
3. Networking and the Web
| Short | Full form |
|---|---|
| HTTP | HyperText Transfer Protocol |
| HTML | HyperText Markup Language |
| URL | Uniform Resource Locator |
| IP | Internet Protocol |
| ISP | Internet Service Provider |
| LAN / WAN | Local / Wide Area Network |
| DNS | Domain Name System |
| FTP | File Transfer Protocol |
4. Exam Quick Tips
- RAM is volatile (loses data when power is off); ROM is non-volatile.
- Do not confuse HTTP (transfer protocol) with HTML (the page language).
- LAN is a small local network; WAN spans large distances (the internet is a WAN).
Keep revising with the rest of the Basic Computer section:
How this was made: Drafted with AI assistance; spot-checked by the editor on 1 November 2026.