Sinclair Research Ltd.

Sinclair Research Ltd is a consumer electronics company founded by Sir Clive Sinclair in Cambridge, England (originally as Sinclair Radionics in 1961) to sell hi-fi equipment, calculators, radios and other products. In 1966 Sinclair created but never sold the world's first pocket television. In 1972 they marketed the world's first pocket calculator, the Sinclair Executive. Many other pocket calculator variants followed including the Sinclair Cambridge, the Sinclair Scientific and the Sinclair Oxford.

In the 1980s Sinclair entered the personal computer market with the ZX80 at £99.95, at the time the cheapest personal computer for sale in the UK. In 1982 the ZX Spectrum was released, later becoming Britain's best selling computer, competing aggressively against Commodore and Amstrad. At the height of its success, and largely inspired by the Japanese Fifth Generation Computer programme, the company established the "MetaLab" research centre at Milton Hall (near Cambridge), in order to pursue Artificial Intelligence, Wafer Scale Integration, formal verification and other advanced projects. The combination of the 1984 failures of the Sinclair QL computer and TV80, and the 1985 Sinclair C5 electric vehicle bankrupted the company, and a year later Sinclair sold the rights to their computer products and brand name to Amstrad. Sinclair Research Ltd still exists today, continuing to market Sir Clive Sinclair's newest inventions.