The Z-89 is a personal computer introduced in 1979 by Heathkit, but produced primarily by Zenith Data Systems (ZDS) in the early 1980s. It combined an...

H89 and Z-89) were based on the Z80 processors and ran either HDOS or CP/M operating systems. Long after products bearing only the Zenith name had accounted...

form as the WH89. These were later sold by Zenith Electronics with their name on the front as the Zenith Z-89. MITS announced the Altair 8800 in January...

having previous experience with its pioneering Z80-based Heathkit H89 and Zenith Z-89 products. However, other computers were made integrating the Z80 with...

Heath/Zenith was in the vanguard of companies to start selling personal computers to small businesses. The H-89 kit was re-branded as the Zenith Z-89/Z-90...

around." Buckley began writing on computers in 1982, starting with a Zenith Z-89. According to his son, Buckley developed an almost fanatical loyalty...

based OS for Harris' computers (MCX) HDOS – ran on the H8 and Heath/Zenith Z-89 series HT-11 – a modified version of RT-11 that ran on the Heathkit H11...

H8 computer system and later also available for the Heathkit H89 and Zenith Z-89 computers. The author was Heath Company employee Gordon Letwin, who later...

others) HBN Computer (Le) Guépard HC-88 HC-2000 Heath/Zenith Heathkit H90|H90 and Heathkit H89/Zenith Z-89 Hewlett-Packard HP-85 / HP-87 (with addition of CP/M...

Microprocessor Trainers (300, 1200, 2400 baud) Heathkit H8 (300 and 1200 baud) Zenith Z-89 — also sold as the Heathkit H89 (300 and 1200 baud) MicroBee Systems...