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Xerox 820 information


Xerox 820
Xerox 820
ManufacturerXerox
Release dateJune 1981; 42 years ago (1981-06)
Discontinued1985
Media96 kB 5¼-inch floppy disks, 300 kB 8-inch floppy disks
Operating systemCP/M 2.2
CPUZilog Z80A clocked at 2.5 MHz
Memory64 KB RAM, 4 KB to 8 KB ROM
DisplayMono CRT, 80 x 24 characters text, two intensity levels
GraphicsTTL / composite video CRT interface
InputKeyboard
Dimensions32.8 × 38.1 × 34.3 cm
Mass13.6 kg (30 lb)

The Xerox 820 Information Processor is an 8-bit desktop computer sold by Xerox in the early 1980s. The computer runs under the CP/M operating system and uses floppy disk drives for mass storage.[1] The microprocessor board is a licensed variant of the Big Board computer.

  1. ^ "Xerox 820 Microcomputer". www.longleaf.net. Retrieved 2022-11-25.

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