AT&T AT&T Bell Labs AT-3 ATA ATA point ATA-2 ATA-4 Atanasoff, John Vincent Atanasoff-Berry Computer ATAPI Atari AtFS Athena Atherton Technology Athlon
| ATIS ATK ATLAS Atlas Autocode ATM ATM Forum ATMP atob ATOLL atomic ATRAC ATS Attachment Unit Interface attenuation atto-
| attoparsec attribute Attribute Translation System Attributed File System ATX au aubergine audio Audio IFF Audio Processing Technology Audio Video Interleave audiographic teleconferencing audiographics AudioOne Augmented Backus-Naur Form
|