Specifications

• Model	Sinclair ZX81
  Type	Home computer
  Released	March 1981
  Processor	NEC Z-80A @ 3.25MHz
  Memory	1 KB RAM, 8KB ROM
  Media	External tape
  Sound	1 channel, 5 octaves
  Graphics	24 lines x 32 characters (text) 64 x 44 pixels in graphics mode
  Ports	Extension port Cassette tape RF television
  Power	External Adapter
  Monitor	-
  OS	Spectrum Basic

  Sinclair ZX81

  The ZX81 is a home computer produced by Sinclair Research and manufactured in Scotland by Timex Corporation. It was launched in the United Kingdom in March 1981 as the successor to Sinclair's ZX80 and was designed to be a low-cost introduction to home computing for the general public. Read More