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On This Day - 25th October

... um had passed half a million machines. The figure covered mail-order and retail sales between April 1982 and August 1983. Sinclair said the Spectrum had sold faster than the ZX81 over comparable periods and promised continued support throug ...

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ZX Spectrum Keyboards and Keyboard Accessories

... um No.9, November 1984, p.63 29. "SPECTRUM & ZX-81 KEYBOARDS - advert", Sinclair User No.7, October 1982, p.56 30. Protos Computer Systems - advert, ZX Computing, December 1982/January 1983, p.115 31. Add-On Electronics - advert, Sinclair U ...

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ZX Spectrum 16K and 48K

... cts ZX Spectrum 16K and 48K Introduction The ZX Spectrum was launched by Sinclair Research in April 1982, following the success of the ZX81. Designed by Richard Altwasser and developed with Sinclair's emphasis on keeping costs low, it combi ...

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ZX Spectrum Sound Amplifiers and Synthesizers

... ir User, No.32, November 1984, p.88 4. "Plug-in Sound amplifier", Sinclair Projects, No.1, December 1982/January 1983, p.6 5. "Sound box for Spectrum", Sinclair Projects, No.3, April/May 1983, p.10 6. "More sound from your Spectrum" - adver ...

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Page Revised: 07/09/2026