Hersteller
- Acom Computer (5)
- Actrix Computer (1)
- Acufast (3)
- Adcomp (1)
- ADD-Master (4)
- Addo (1)
- Addo-X (3)
- Address Express (1)
- ADM Corporation (2)
- Admate (10)
- ADP (2)
- Adrema (3)
- Adressograph Multigraph (2)
- Advanced Computer (4)
- Advanced Technologies (1)
- AEG (1)
- Agfa (6)
- Aitel (1)
- Alcatel (19)
- ALL (2)
- Allen (20)
- Alpha (1)
- Alpha Data (1)
- Alpha Numeric System (1)
- Alphacom (1)
- Alps (2)
- Altos (2)
- Alwright Data (2)
- AM International (6)
- AM Jacquard (1)
- Amerex (8)
- American (1)
- Amstrad (17)
- AMT (19)
- Anadex (69)
- Anchor (1)
- Anita (1)
- Anitech (3)
- Anker Data System (ADS) (55)
- Anzac Computer Equipment (12)
- Apollo (11)
- Apple (49)
- Applied Computer Systems (3)
- Apricot (2)
- Arrow (1)
- Ascom (3)
- ASI (2)
- Aster (8)
- Astrojet (7)
- Astron (1)
- AT&T (13)
- Atil (3)
- ATV Systems (1)
- Avaya (3)
- Avery Dennison (1)
- Avision (5)
- Axiom (2)
- Axis (1)
- Axonix (3)
- Azurdata (3)
