Hersteller
- ACT (2)
- ADD-Master (3)
- Addo (1)
- Addo-X (3)
- Address Express (1)
- ADM Corporation (2)
- Admate (4)
- Adrema (2)
- Advanced Micro Systems (1)
- Advanced Technologies (1)
- Agfa (8)
- Aitel (3)
- Alcatel (25)
- Allen (18)
- Alpha Data (1)
- Alpha Numeric System (1)
- Alps (1)
- Altos (2)
- Alwright Data (1)
- AM International (6)
- AMS Computertechnik (1)
- Anadex (3)
- Anita (1)
- Anitech (1)
- Anker Data System (ADS) (12)
- Anzac Computer Equipment (10)
- Apeco (1)
- Apollo (11)
- Apple (41)
- Apricot (3)
- Arrow (1)
- Ascom (3)
- ASI (1)
- AT&T (9)
- Atari (1)
- Aurora (10)
- Avaya (5)
- Aviv (1)
- Axiom (1)