AFIPS
American Federation of Information Processing Societies
AIPS
Astronomical Image Processing System
BIPS
Billions Instructions Per Second
CIPS
Canadian Information Processing Society
CIPSO
Common Internet Protocol Security Option
AA
American national standard code for information interchange (ASCII) Art
AASP
American national standard code for information interchange (ASCII) Asynchronous Support Package
ABTS
American standard code for information interchange (ASCII) Block Terminal Services
ACE
American national standard code for information interchange (ASCII) Compatible Encoding
AES
Advanced Encryption Standard