Contents:
- Aardvark Business Computers Ltd
- A Adkins and Co.
- Accounting & Computer Systems Ltd
- ACT Ltd
- Action Communication Systems Inc.
- Adage Inc.
- AddressographMultigraph
- Adler
- ADM Business Systems
- ADSAnkers Data Systems Ltd
- Advance Digital Peripherals Ltd
- Advanced Micro Devices (UK) Ltd
- AEI
- AEP International
- AFAMinerva
- AGFAGevaert
- AIM Air Conditioning
- Alacra
- Allied Business Systems Ltd
- Alpha Data Inc.
- Alphameric Keyboards Ltd
- Altergo Computers Ltd
- Amdahl Corporation
- Ampex Corporation