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An Anonymous Coward writes:

https://www.theregister.com/2021/03/05/zx81_at_40/ [theregister.com]

It has been 40 years since the launch of Sinclair's ZX81, a device that welcomed countless Brits to the delights of home computing at the dawn of the 1980s.

Released on 5 March 1981, the ZX81 was the successor to 1980's ZX80 and, like its predecessor, was based around a Z80 CPU. Both machines also featured 1KB of memory and required a UHF television to display the monochrome output.

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