Hersteller
- ADD-Master (1)
- Addo (1)
- Addo-X (3)
- ADM Corporation (2)
- Admate (8)
- Advanced Micro Systems (1)
- Advanced Technologies (1)
- Agfa (6)
- Aires (1)
- Aitel (1)
- Alcatel (15)
- Allen (18)
- Alphacom (1)
- Alwright Data (1)
- AM International (6)
- Amerex (4)
- American Datacom (1)
- AMT (17)
- Anadex (3)
- Anita (1)
- Anitech (1)
- Anker Data System (ADS) (13)
- Apollo (3)
- Apple (8)
- Apricot (2)
- Arrow (1)
- Arts Computer Prodaktion (2)
- Ascom (3)
- ASF (1)
- ASI (1)
- Assmann (3)
- Astrojet (7)
- Atari (5)
- Aurora (16)
- Aviv (1)
- Axiom (4)