ATM ☞ asynchronous transfer mode

►˜2DD☞ ☞   double-side double density

►˜2HD☞                ☞ double-side high density

►˜3D DDI☞   ☞   3 Dimensional Device Driver Interface

►˜4GL ☞      4th generation language

►˜4GT ☞       4 GB Ram Tuning

►˜A3D  ☞         Aural 3D

►˜ABI ☞     application binary interface

►˜ABS☞    air bearing surface

►˜ACE   Advanced Computing Environment

►˜ACPI      ☞  Advanced Configuration and Power Interface

►˜ACSM☞  Application Control State Machine

►˜ADB ☞  Apple Desktop Bus

►˜ADE ☞  automatic design engineering

►˜ADF ☞  Auto Document Feeder

►˜ADO   ☞  ActiveX Data Objects

►˜ADSI    ☞  Active Directory Service Interfaces

►˜ADT ☞  attribute definition table

►˜AGP  ☞   Accelerated Graphics Port

►˜AIF  ☞  application integration feature

►˜ALU☞  arithmetic logical unit

►˜AML ☞  ACPI Machine Language

►˜AMR ☞  Audio/Modem Riser

►˜AOAC ☞  always on/always connected

►˜API ☞  application programming interface

►˜APIC ☞   Advanced Programmable Interrupt Controller

►˜APM ☞   Advanced Power Management

►˜APNIC ☞  Asia Pacific Network Information Center

►˜ARC ☞   Advanced RISC Computing

►˜ASF ☞  Active Streaming Format

►˜ASL ☞  ACPI Source Language

►˜ASP ☞    active server page

►˜ASPI ☞  Advanced SCSI Programming Interface

►˜ATA ☞   AT Attachment

►˜ATAPI ☞   AT Attachment Packet Interface

►˜ATM ☞   asynchronous transfer mode

►˜ATM API ☞   asynchronous transfer mode application programming interface

►˜ATMS ☞  Automated Traffic Management Systems

►˜AT-UD ☞   Unimodem Diagnostics Command

►˜ATX ☞  AT eXtension

►˜AUI ☞  Attachment Unit Interface

►˜AVGA ☞  Advanced VGA