NAME  

820

MANUFACTURER  

Xerox

TYPE  

Professional Computer

ORIGIN  

USA

YEAR  

1981

END OF PRODUCTION 

1985

BUILT IN LANGUAGE 

Basic 80 on disk

KEYBOARD  

AZERTY/QWERTY, full-stroke keyboard

CPU  

Zilog Z80 A

SPEED  

2.5 MHz

RAM  

64 kb

ROM  

4 or 8 kb

TEXT MODES 

80 x 24

COLORS  

Monochrome

SOUND  

No sound

SIZE / WEIGHT 

Main unit with monitor 325 (W) x 380 (D) x 340 mm (H) / 14 Kg

I/O PORTS 

Serial 9600 bauds, Internal Expansion Slot, External Floppy Connector

OS  

CP/M 2.2

POWER SUPPLY 

Built-in PSU

PERIPHERALS  

Printer, 8" 160 kb or 5.25" 80 kb floppy disk drives

PRICE  

$3999 (USA 1982)

 

Xerox 820

Xerox 820

 The Model 820 is an attempt from Rank Xerox to enter the professional micro-computer market. But the 820 is a bit weak with its Z80 at only 2,5 Mhz and its 96kb 5''1/4 disk-drives (83k formated). Fortunately, higher capacity 8'' disk-drives were also available (300 kb each). Apparently, a 10Mb hard disk was also proposed.

Communication was focused on the fact that the Xerox 820 could suit to a lot of professions, and indeed, thanks to its CP/M compatibility a lot of different software was available (Wordprocessor, Supercalc, AGIS billing, SAARI, Wordstar 3.0, Mailmerge 3.0, Supersort 1.6, Calcstar, Infostar 1.0, FIGARO hair-dresser management, etc...).

The Xerox 820 was followed by the Xerox 820-II.