The ZX81 sold in the United Kingdom for 69.95 pounds (built) or 49.95 pounds (as a kit) with 1KB of RAM. Another 16KB of RAM cost 50 Pounds. The equivilent machine in the US sold a year later for $100. It was amazing what programmers could fit into 16 KB. Unlike the bloatware of today they wrote very tight code.
You can try the ZX80 / ZX81 forums - http://www.rwapservices.co.uk/ZX80_ZX81/forums/
ZX80 - 1980 ZX81 - 1981 ZX Spectrum - 1982
Sir Clive Sinclair. His first attempt at a mass produced computer was the SInclair ZX80. This was followed by the Sinclair ZX81, and subsequently the ZX Spectrum.
The Sinclair ZX80, ZX81, Spectrum and QL personal computers.
Edward Page has written: '37 Timex 1000/Sinclair ZX-81 programs for home, school, office' -- subject(s): BASIC (Computer program language), Programming, Sinclair ZX81 (Computer), Timex 1000 (Computer) 'Practical TIMEX/Sinclair computer programs for beginners' -- subject(s): BASIC (Computer program language), Programming, Sinclair ZX81 (Computer), Timex 1000 (Computer)
Graham Charlton has written: 'The Turing criterion' -- subject(s): Programming, Sinclair ZX81 (Computer)
Richard Francis Altwasser has written: 'The Cambridge collection' -- subject(s): Sinclair ZX81 (Computer), Programming
It was made by Sinclair Research, founded by the inventor Sir Clive Sinclair. Besides the MK14, the ZX80 was the first home computer for under £100, supplied in kit form in 1980 for home-assembly. A more expensive assembled version was also available. Sinclair Research went on to produce the more successful ZX81 (1981) and ZX Spectum (1982), but then went into meltdown with three successive product failures: the Sinclair QL computer (1983), the TV80 pocket TV (1984) and finally the Sinclair C5 (1985). Sinclair Research was finally sold to Sir Alan Sugar's Amstrad, while Sir Clive retained Sinclair Research Limited as a one-man company to promote his inventions.
Zap Attack was an early computer game (1984) on the Sinclair ZX81. Zap Attack is also a generic term for programmed attack sequences as parts of edited computer games.
Trevor Toms has written: 'The ZX81 pocket book' -- subject(s): Computer games, Programming, Sinclair ZX81 (Computer) 'SORT' -- subject(s): Data processing, Management, Microcomputers, Retail trade, Small business 'Das Spectrum-Buch'
Ian Davies has written: '100 Ideas for Teaching Citizenship (Continuum One Hundreds)' 'Teaching the Holocaust' '44 dynamic ZX-81 games and recreations' -- subject(s): BASIC (Computer program language), Computer games, Computer programs, Programming, Sinclair ZX81 (Computer)
Sir Clive Sinclair - inventor of the ZX80, ZX81 and Spectrum computers. Sir Richard Branson - Founder of Virgin label covering air travel, trains, music etc Tim Berners-lee - inventor of the internet ! Margaret Thatcher - first female Prime Minister & former MP Sir Cliff Richard - recording artist. JK Rowling - Authoress Those are the ones that came to mind when I saw the question - there are MANY more...