ZX81
Computer
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The ZX81 is a home computer that was produced by Sinclair Research and manufactured in Dundee, Scotland, by Timex Corporation. It was launched in the United Kingdom in March 1981 as the successor to Sinclair's ZX80 and designed to be a low-cost... Wikipedia
Date introduced: 1981
CPU: Z80 @ 3.25 MHz
Dimensions: 167 millimetres (6.6 in) wide by 175 millimetres (6.9 in) deep
Discontinued: 1984
Display: Monochrome display on UHF television
Graphics: 24 lines × 32 characters or; 64 × 48 pixels graphics mode
Introductory price: £49.95 kit, £69.95 assembled (£204–285/$279–390 at 2024 prices)