Sinclair ZX 81
Home computer, 1981, Sinclair. The ZX81 was sold both as a kit and assembled, and was the first home computer to reach a really large audience in Europe.
| Year | 1981 |
|---|---|
| Manufacturer | Sinclair Research Ltd (UK) |
| Model | ZX81 |
| Processor | Zilog Z80A at 3.25 MHz |
| ROM | 8 KB |
| RAM | 1 KB, expandable up to 64 KB (56 KB usable) |
| Display | 22 lines x 32 characters, 64 x 44 block graphics, monochrome |
| Interfaces | cassette recorder (jack), expansion bus, TV (RF UHF) |
| Operating system | Sinclair BASIC |
| Dimensions | 167 (W) x 175 (D) x 38 (H) mm |
| Weight | 0.34 kg |
| Price (1981) | 49 pounds as a kit, 59 pounds assembled |
Documentation
- Sinclair ZX 81 - Assembly instructions
- Sinclair ZX 81 - Service manual
- Sinclair ZX 81 - Service manual
- Sinclair ZX 81 - ZX81 BASIC programming manual (second edition)
- Sinclair ZX 81 - ZXpand expansion interface manual
- Sinclair ZX 81 - Schematics
- Sinclair ZX 81 - Software
