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A Ampere
AA Atomic absorption
AAF Advanced Authoring Format
AAGR Annual Average Growth Rate
AAS Atomic absorption spectroscopy
ABC Activity-based costing
ABE Acceptor bound exciton
ABM Activity-based management
ABS Antilock braking system
Ac Actinium
AC Alternating current; Activated carbon
ACA Anisotropically Conductive Adhesive
ACCESS Analysis computer for component engineering services support
ACFA Advanced CMOS Frame Aligner
ACI After clean inspection
ACIA Asynchronous Communications Interface Adapter
ACT Alternative control techniques; actual cycle time
ADC Analog-to-digital converter
ADE Advanced development environment
ADI After develop inspection
ADIG Application development interface guidelines
ADIO Analog/digital input/output
ADL Add lot
ADMA Advanced DMA controller
ADP Administrative data processing
ADPCM Adaptive differential pulse code modulation
ADR Astra Digital Radio
ADSL Asymmetric Digital Subscriber Line
ADT Applied diagnostic techniques
ADTV Advanced Definition TV
AE Auger electron; Atomic emission; Acoustic emission
AEC Advanced Equipment Controller; Architecture, Engineering and Construction
AECS Automated Equipment Control System
AEI After etch inspection; Automated equipment interface
AEM Analytical Electron Microscopy
AES Auger Electron (Emission) Spectroscopy; Advanced Encryption Standard
AF Audio Frequency
AFC Automatic Frequency Control; Automatic Flow Controller
AFD Application framework definition
AFM Atomic Force Microscopy
AFT Automatic Fine Tuning
A-GEMTF Advanced GEM Task Force
Ag Silver
AGC Automatic Gain Control
AGP Accelerated Graphics Port
AGV Automated guided vehicle
Ah Ampere-hour
AHF Anhydrous hydrogen flouride
AI Artificial intelligence; Adobe Illustrator image format
AIS Adhesive Interconnect System
Al Aluminum
Al2O3 Aluminum oxide (aka alumina or sapphire)
ALD Atomic layer deposition
ALE Atomic layer epitaxy; Application Logic Element
AlGaAs Aluminum Gallium Arsenide
AlGaN Aluminum Gallium Nitride
ALI ATM Line Interface
ALS Advanced light source; Advanced low-power Schottky
ALS Advanced light source; Advanced low-power Schottky
ALT Alternating
ALU Arithmetic logic unit
ALVT Advanced low voltage technology
Am Americium
AM Amplitude modulation; Ante meridiem (before noon)
AMC Airborne molecular contamination
AMD Alpha micro devices
AMDM ATM Multiplexer/DeMultiplexer (QSI)
AMH Automated material handling
AMHS AMH Systems
AMI Alternate Mark Inverse Code
AML Automatic model linking
AMLCD Active Matrix LCD
AMM Acoustic Mismatch Model; Analog Multimeter
Amp Amplifier
AMPS Advanced Mobile Phone System
AMRAAM Advanced Medium Range Air-to-Air Missile
AMT Advanced manufacturing technology
AMU Atomic mass unit
AND Logic term - AND
ANN Artificial Neural Network
ANOVA Analysis Of Variance
ANPA American Newspaper Publishers Association
ANSI American National Standards Institute
AOI Automatic Optical Inspection; And-Or-Invert
AOQL Average Outgoing Quality Level
AOV Air-Operated Valve
AP Adhesion Promoter
APA Advanced Performance Algorithm
APB Anti Phase Boundary
APC Advanced Process Control; Automatic Phase Control
APCD Add-on Pollution Control Devices
APCFI Advanced Process Control Framework Initiative
APCVD Atmospheric Pressure Chemical Vapor Deposition
APD Avalanche Photo Diode
APEC Advanced Process Equipment Control
API Application Programming Interface; Atmospheric Pressure Ionization
APIMS Atmospheric Pressure Ionization Mass Spectroscopy
APM Atmospheric Passivation Module; Acoustic Plate Mode
APS American Physical Society
APT Advanced Probe Technology; Automatically Programmed Tools
APVD Alcatel Plasma Vapor Deposition (Alcatel-France)
APW Augmented Plane Wave
AQI ACCESS Query Interface
AQL Acceptance Quality Level: Acceptable Quality Level
AQTX Aquatic Toxicity
Ar Argon
AR Aspect Ratio
ARAMS Automated Reliability, Availability, and Maintainability Standard
ARC Antireflective Coating
ARCOFI Audio Ringing Codec Filter
ARDE Aspect-Ratio-Dependent Etching
ARIB Association of Radio Industries and Businesses
ARIMA Auto Regressive Moving Average with Integration
ARINC Aeronautical Radio Incorporated
ARO After Receipt of Order
ARPA Advanced Research Projects Agency (formerly DARPA)
ARPES Angular Resolved Photo Electron Spectroscopy
ARPES Angular Resolved Photo Electron Spectroscopy
ARPU Average Revenue Per User
ARS Angle-Resolved Scattering
ARUPS Angle-Resolved UV Photoemission Spectroscopy
ARXPS Angle Resolved XPS
As Arsenic
ASAP Advanced Stepper Application Program
ASCII American Standard Code for Information Interchange
ASE Amplified Stimulated Emission
ASF Windows Media Technology File Format
ASFU Application Specific Full Use
AsH3 Arsine
ASLAC Advanced Subscriber Line Audio processing interface
ASLIC Advanced Subscriber Line Interface
ASO Automatic Shut-Off
ASP Advanced Strip and Passivation; Advanced Strip Processor; Application Service Provider; Advanced Simple Profile
ASIC Application-Specific Integrated Circuit
ASME American Society for Mechanical Engineering
ASPaRC Ability of Solder Paste to Retain Components
ASR Automated Send Receive
AS/RS Automated Storage and Retrieval System
ASSMBE All Solid Source MBE
ASSP Application Specific Standard Product
ASTM American Society for Testing and Materials
ASTTL Advanced Schottky TTL
ASW Augmented Spherical Wave
Async Asynchronous
At Astatine
ATDF Advanced Tool Development Facility
ATDSEM Apply/Develop Track Specific Equipment Model
ATE Automatic Test Equipment
ATF Automation Test Facility (recently renamed SIL)
ATG Automatic Test Generation
ATLAS Abbreviated Test Language for All Systems
ATM Atmosphere; Asynchronous Transfer Mode
ATP Advanced Technology Program; Adenosine TriPhosphate
ATPG Automatic Test Pattern Generation
ATR Attenuated Total Reflectance; Air Transport Rack
ATR-FTIR Attenuated total reflectance Fourier transform infrared spectroscopy
ATSC Advanced Television Systems Committee
ATT Attenuated
atto 1.00E-18 (1/1,000,000,000,000,000,000; symbolized by the prefix a
Au Gold
AVC Automatic Volume Control
AVP Advanced Vertical Processor
AVS Advanced Visualization System
AVT Accelerated Vesication Test
AWE Asymptotic Waveform Evaluation
AWG American Wire Gauge
AWGN Additive White Gaussian Noise
AWS Advanced Wet Station