Launched in April 1982, the Sinclair ZX Spectrum was a revolutionary 8-bit home computer developed by Sinclair Research Ltd. as the successor to the ZX81. Featuring a Z80A CPU, color graphics, and either 16KB or 48KB of RAM, it was priced to appeal to the mass market. Its iconic rubber keyboard, affordability, and easy-to-learn Sinclair BASIC made it a smash hit, especially in the UK and Europe. The Spectrum became a platform for bedroom coders, indie game developers, and a booming software ecosystem. Over 5 million units were sold, cementing its legacy as one of the most influential computers in history.
Technical Information | |
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Name | ZX Spectrum |
Manufacturer | Sinclair Research Ltd |
Launched | Friday, April 23, 1982 |
Discontinued | 1/1/1986 |
Country | United Kingdom |
CPU | Z80A |
Power | 9V DC (external PSU) |
Expansion | Edge connector for peripherals, joysticks, RAM, printers |
Storage | Cassette tape (1200 baud typical), MIcrodrives, Floppy Drives |
Keyboard | 40-key rubber keyboard with BASIC keyword shortcuts |
Sound | 1-bit beeper (later models added AY-3-8912 sound chip) |
ROM | 16 KB (BASIC interpreter, OS routines) |
RAM | 16 KB or 48 KB |
Display | TV output – 256×192 pixels, 15 colors (with attribute clash) |
CPU Speed | 3.5 MHz |
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