ZX81
From HwB
Computer manufactured by Sinclair Research. Launched in 1980.
Contents |
Technical specs
| CPU: | Zilog Z80A, 3.25 MHz |
| ROM: | 8 KB |
| RAM: | 1 KB (externally expandable to 64KB, which of 56KB usable) |
| Text mode: | 32 x 24 |
| Graphical mode: | 64 X 48 (by half characters) |
| Colours: | black-and-white |
| Sound: | none |
| Price: | Assembled: £70 (UK, june 1981) Self-assembly kit: £50 (UK, june 1981) |
Connectors
- RF (for TV, UHF)
- Cassette (250 baud)
- Extension port