A
- accreditation range
- accumulator
- accuracy
- accurate representation
- ACD
- ACE
- ACELP
- achromatic color
- ACID
- acknowledgment
- ACL
- ACM
- acoustic delay line
- acoustic detection
- acoustic model
- acoustic modem
- acoustic sensitivity
- acoustic sensor
- acoustic wave
- acoustics
- ACP
- ACPI
- acquisition time
- ACR
- acrostic
- ACS
- ACSE
- action
- action semantics
- action-packed game
- activating
- activation
- activation function
- activation record
- activation sequence
- active area
- active attack
- active cell
- active certificate
- active component
- active content
- active filter
- active high
- active hub
- active low
- active matrix screen
- active monitor
- active noise control system
- active object
- active open
