Sinclair ZX81

Sinclair ZX81

The ZX81 is a home computer produced by Sinclair Research and manufactured in Dundee, Scotland by Timex Corporation.

The final testing bench for the ZX81 at Dundee Timex, 3 February 1982

It was launched in the United Kingdom in March 1981 and could be bought by mail order in kit form or pre-assembled, the first inexpensive mass-market home computer that could be bought from high street stores, led by W.H. Smith and soon many other retailers.

ZX81 advert from The Home Computer Course magazine publication 1983