ZX81
1981

  • Original Price : £69.95
  • Memory RAM : 1K
  • Memory ROM : 8K
  • CPU : Z80 @ 3.25MHz
  • Video Output : RF Modulator
  • Display Resolution Text : 24 lines x 32 characters
  • Display Resolution Pixels : 64 x 48
  • Colours : 2
  • OS Language : Sinclair BASIC
  • IO Ports : tape-recorder and Z80 Bus

The ZX81 was launched in 1981 by Sinclair and came in kit form for £49.95 or fully assembled for £69.95. The ZX81 offered 1KB of memory and an 8-bit CPU with a speed of 3.25 MHZ.

Trivia

BASIC is an acronym for Beginners All-purpose Symbolic Instruction Code

8-bit is an early computer hardware device or software program that is capable of transferring eight bits of data at the same time.

8-bit computer manufacturers Sinclair, Acorn and Tangerine (Oric) were all based within a few miles of each other in Cambridgeshire England.

ZX81

Year of Release : 1981

Manufacturer : Sinclair

Original Price : £69.95

Memory RAM : 1K

Memory ROM : 8K

CPU : Z80 @ 3.25MHz

Display Resolution Text : 24 lines x 32 characters

Display Resolution Pixels : 64 x 48

Colours : 2

OS Language : Sinclair BASIC

View Sinclair

Peripherals

Photo Name Manufacturer Year Specification Original Price Action
ZX Printer ZX Printer Sinclair 1981 32 characters or 256 pixels £59.95 View More
ZX 16K RAM ZX 16K RAM Sinclair 1981 16K RAM Pack Expansion £29.95 View More

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Retro 8-Bit Computer Collection from 1979 to 1986.

A short history of retro 8-bit computers spanning from 1979 with the Atari 400 through to 1986 and the ZX Spectrum 128.

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