calculator. Curry was impressed and encouraged Sinclair to adopt it as a product. In June 1978, Science of Cambridge launched its MK14 microcomputer in kit form. In May 1979, Jim Westwood, Sinclair's chief engineer, designed a new microcomputer based on the Zilog Z80 microprocessor. Sinclair Instrument Ltd introduced the computer as the ZX80 in February 1980, as both a kit and ready-built. In November 1979, Science of Cambridge Ltd was renamed Sinclair Computers Ltd. Commercial success and home computers In March 1981, Sinclair Computers was renamed Sinclair Research Ltd and the Sinclair ZX81 was launched. In February 1982, Timex Corporation obtained a license to manufacture and market Sinclair's computers in the USA under the name Timex Sinclair. In April the ZX Spectrum was launched. In July Timex launched the TS 1000 (a version of the ZX81) in the United States. In March 1982 Sinclair Research Ltd made an £8.55m profit on turnover of £27.17m, including a £383,000 government grant to develop a flat screen. In 1982 Clive Sinclair converted the Barker & Wadsworth mineral water bottling factory at 25 Willis Road, Cambridge, into the company's new headquarters. (Following Sinclair's financial troubles, the premises were sold to Cambridgeshire County Council in December 1985.) In January 1983 the ZX Spectrum personal computer was presented at the Las Vegas Consumer Electronics Show. In September the Sinclair TV80 pocket television was launched, but was a commercial failure. In 1983 the company bought Milton Hall in the village of Milton, Cambridgeshire, for £2m, establishing its MetaLab research and development facility there. In late 1983 Timex decided to pull out of the Timex Sinclair venture which, due to strong competition, had failed to break into the United States market. However, Timex computers continued to be produced for several years in other countries. Timex Portugal launched improved versions, the TS 2048 and 2068; that company also developed and launched the FDD3000, a floppy disk system, although it was not well received by the market. Mid-1980s developments The Sinclair QL was announced on 12 January 1984, shortly before the Apple Macintosh went on sale. The QL was nowhere near as successful as Sinclair's earlier computers. It suffered from several design flaws, and Your Sinclair noted that it was "difficult to find a good word for Sinclair Research in the computer press". Fully working QLs were not available until late summer and complaints against Sinclair regarding delays were upheld