A

a-Si (hydrogenated amorphour silicon)

ABC (Atanasoff-Berry Computer)

ACL (access control list)

ACPI (Advanced Configuration and Power Interface)

ACR (advanced communications riser )

ADC ( analog-to-digital converter)

ADPCM (adaptive differential pulse code modulation)

ADR (advanced digital recording)

ADSL (asymmetric DSL)

AFC (antiferromagnetically coupled )

AGC (automatic gain control)

AGP (Accelerated Graphics Port)

AHA (accelerated hub architecture)

AHRA (Audio Home Recording Act)

AIT (advanced intelligent tape)

ALDC (advanced lossless data compression)

ALi (Acer Laboratories, Inc.)

AMD (Advanced Micro Devices)

AMI (American Megatrends, Inc.)

AMR (anistropic magneto-resistant)

AMR (audio modem riser)

ANSI (American National Standards Institute)

API (application programming interface)

APIC (advanced programmable interrupt controller)

APM (Advanced Power Management)

APS (analog protection system)

ARLL (advanced run length limited)

ASPI (Advanced SCSI Programming Interface)

AT (Advanced Technology)

ATA (AT Attachment)

ATAPI (AT Attachment Packet Interface)

ATF (auto tracking following)

AWG (American Wire Gauge)