1940: Clive Marles Sinclair is born
1958: Leaves school. Editor of Practical Wireless.
1961: Formed Sinclair Radionics.
1962: Microamplifier - smaller than a half crown. Joins MENSA.
1964: Sinclair logo appears for the first time.
1966: Microvision TV (£99.95). Chris Curry joins.
1968: System 2000 complete hi-fi system
1972: First calculator - Sinclair Executive (£79.95).
1973: Cambridge calculator (£29.95). Nigel Searle joins.
1974: Scientific calculator (£29.95).
1976: First problems. Black Watch launched. Company loses £335,000. NEB buys a 43% stake for £650,000.
1977: Collapse of calculator market. NEB injects further £1.9m. Black Watch scrapped.
1978: £2m loss. First microcomputer designed and sold to Newbury Labs. Emerges two years later as the New Brain.
1979: Sinclair splits from NEB. Sets up Science of Cambridge with Chris Curry. Curry splits off and sets up Acorn. Sinclair sets up Sinclair Research.
1980: ZX80 (£99.95)
1981: ZX81 (£69.95)
1982: Spectrum launched 16K (£125) 48K (£175). 300,000 ZX81s sold. Turn-over up to £30m.
1983: Spectrums sell at 12,000 a week. Microdrives (£49.95). Sinclair is Guardian Young Businessman and is knighted in the Queen's Birthday Honours. Flat Screen TV (£79.95).
1984: QL (£399). Turn-over up to £77m. Flotation of 10% values Sinclair Research at £134m. Spectrum Plus (£179).
1985: C5 launched by Sinclair Vehicles. Cash crisis at Sinclair Research. Maxwell steps in, and out. £10m raised by sale of Spectrum to Dixons.
1986: Spectrum 128 (£179). Amstrad takes over computer business. Sinclair moves on.
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