ZX81

From HwB

Sinclair Research logo

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

Contributions

Sources