History of Sinclair Computers 1980: February - Sinclair Research announces the ZX80 computer in the North American market.

- Sinclair Research announces the ZX80 computer in the North American market. 1981: March - Sinclair unveils the ZX81 in the UK, based on the Z80A microprocessor.

- Sinclair unveils the ZX81 in the UK, based on the Z80A microprocessor. 1981: December - Sinclair Research reports that it has shipped 250,000 ZX81 personal computers.

- Sinclair Research reports that it has shipped 250,000 ZX81 personal computers. 1982: April - Sinclair Research introduces the Sinclair ZX Spectrum in the UK.

- Sinclair Research introduces the Sinclair ZX Spectrum in the UK. 1982: July - Timex Computer begins selling the Timex Sinclair 1000 through over 1000 Timex retail outlets.

1982: August - Sinclair Research reports that it has shipped 500,000 ZX81 personal computers in over 30 countries.

- Sinclair Research reports that it has shipped 500,000 ZX81 personal computers in over 30 countries. 1983: January - Timex introduces the Timex/Sinclair 2000, which is their re-packaged Sinclair Spectrum for the North American market. Source: Chronology of Events in the History of Microcomputers



