| A | B |
|---|
| AC | Alternating Current |
| ACL | Access Control List |
| ACPI | Advanced Configuration Power Interface |
| ACT | Activity |
| ADSL | Asymmetrical Digital Subscriber Line |
| AES | Advanced Encryption Standard |
| AGP | Accelerated Graphics Port |
| AHCI | Advanced Host Controller Interface |
| AP | Access Point |
| APIPA | Automatic Private Internet Protocol Addressing |
| APM | Advanced Power Management |
| ARP | Address Resolution Protocol |
| ASR | Automated System Recovery |
| ATA | Advanced Technology Attachment |
| ATAPI | Advanced Technology Attachment Packet Interface |
| ATM | Asynchronous Transfer Mode |
| ATSC | Advanced Television System Committee |
| ATX | Advanced Technology Extended |
| AUP | Acceptable Use Policy |
| A/V | Audio Video |
| BD-R | Blue-ray Disk Recordable |
| BIOS | Basic Input/Output System |
| BNC | Bayonet-Neill-Concelman or British Naval Connector |
| BSOD | Blue Screen of Death |
| BTX | Balanced Technology Extended |
| CAD | Computer Aided Design |
| CAPTCHA | Completely Automatic Public Turing Test to tell Computers and Humans Apart |
| CAS | Column Access Strobe |
| CCFL | Cold Cathode Fluorescent Lamp |
| CD | Compact Disc |
| CD-ROM | Compact Disc-Read-Only Memory |
| CD-RW | Compact Disc-Rewritable |
| CDFS | Compact Disc File System |
| CERT | Computer Emergency Response Team |
| CFS | Central File System or Common File System or Command File System |
| CGA | Computer Graphics and Applications |
| CIDR | Classless Inter-Domain Routing |
| CIFS | Common Internet File System |
| CMOS | Complementary Metal-Oxide-Semiconductor |
| CNR | Communications and Networking Riser |
| COMx | Communication Port (x=Port Number) |
| CPU | Central Processing Uni |
| CRT | Cathode Ray Tube |
| DAC | Discretionary Access Control |
| DB-25 | Serial Communications D-shell Connector, 25 Pins |
| DB-9 | 9 Pin D Shell Connector |
| DC | Direct Current |
| DDoS | Distributed Denial of Service |
| DDR | Double Data-Rate |
| DDR RAM | Double Data-Rate Random Access Memory |
