The BBC Model A was created as a lower-cost variant to encourage higher sales outside of the schools sector. It was launched at a price of GBP £235 (compared with GBP £335 for the Model B). This price rose to GBP £299 as Acorn found they couldn't make it at the lower price.
Acorm released two versions of the Model A
- ANA01 - The standard Model A
- ANA02 - Fitted with the optional Econet interface chips and socket
While physically identical, the Model A lacked a number of internal components and interfaces.
- 16Kb of RAM instead of 32Kb (The empty spaces were fitted with sockets to simplify upgrades)
- 6522 VIA Chip
Rear interface sockets
- RGB port
- Serial port
- Analogue port
Underside interface sockets
- User port
- Centronics (printer) port
- 1MHz Bus
All of these components could be installed to bring the machine up to full Model B specifications, and it is quite difficult to find an unmodified Model A now.