Xerox 820


The Xerox 820 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. The microprocessor board is a licensed variant of the Big Board computer.

Xerox introduced the 820 in June 1981 for $2,995 with two ​5 14-inch single-density disk