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Sinclair ZX-80
Manufacturer Sinclair CPU 3.25MHz Z-80 Keyboard 40 key membrane
Introduced February 1980 RAM 1k  Display 32x24 (64x48) B&W
Shipped January 1980 ROM 4k BASIC Storage Cassette
Discontinued March 1981 OS None  Ports  
Production 70,000 Bus   Slots  
Brochure Peripherals/Upgrades Software