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 updated version of the Heathkit H8 microcomputer and H19 terminal in a new case that also provided room for a built-in floppy disk on the right side of the display.

The US$2295 Z-89 is integrated in a terminal-like enclosure with a non-detachable keyboard, 12-inch monochrome CRT with a 80x25 character screen, 48 KB RAM, and a 5.25" floppy disk drive.

[1] The keyboard is of high build quality and has an unusual number of special purpose keys: REPEAT, ESC, Tab ↹, CAPS, CTRL, SCROLL, RESET, BREAK, BACK SPACE, LINE FEED, DELETE, and three with white, red, and blue squares.

[2] BYTE wrote that the H89 "has a number of unique hardware features and the same excellent software support and documentation as the original H-8 system".