Heath Co. (Benton Harbor, Mich.)

Many early hobbyists cut their teeth on building an H8 from a kit, and it’s not unusual to meet engineers with fond memories of the system. An H8 alone has limited functionality; you want to find one with the H9 or later H19 terminal. Working floppy drives enhance the value of this system, too. The H11 was introduced simultaneously with the H8 and is internally identical to the DEC PDP-11/03.

The H-89 was also sold in assembled form only by Zenith Data Systems as the Z-90. (Zenith purchased Heath from Schlumberger in 1979.) One CPU handled system operation, and the other video operation. The main difference between the two models is that the H-89 came with a floppy drive standard.

The H-100 was similar to the Zenith Z-100, and was sold in both kit and assembled form. The HS-151 was similar to the Zenith Z-150. The HS-161 was similar to the Zenith Z-160.

Heath Heathkit H8 Digital Computer (1977, early micro)
Original Retail Price: $375 kit
Base Configuration: 8080A CPU, nine S-50? slots, 8K RAM (64K max), 1K ROM, 9-digit LED, integral keypad, Benton Harbor BASIC, HASL-8 assembler, TED-8 text editor, power supply, enclosure
Video: 24-line x 80-column text
Size/Weight: 16.25 x 6.5 x 17 inches
Important Options: HDOS, cassette interface, external 5.25- or 8-inch floppy disk drive, paper tape reader, cassette recorder, H9 terminal, serial and parallel interfaces, H14 printer

Heath Heathkit H11 Digital Computer (1977, early micro)
Original Retail Price: $1,295 kit
Base Configuration: DEC LSI-11/2 CPU, seven LSI bus (Qbus) slots, 4K RAM (32K max), cassette port, power supply, enclosure
Size/Weight: 6.5 x 19 x 17 inches
Important Options: HT-11 operating system, 5.25- or 8-inch floppy disk drive, paper tape reader, cassette recorder, H9 terminal, serial and parallel interfaces, H14 printer

Heath Heathkit H-88/H-89 All-in-One Computer (desktop)
Original Retail Price: $1,295 (H-88)/$1,695 kit, $2,895 assembled (H-89)
Base Configuration: two 2.048MHz Z80 CPUs, 16K RAM (64K max), integral 12-inch monochrome CRT, integral keyboard/keypad, RS-232C port, BASIC
Video: 24-line x 80-column text
Important Options: CP/M 2.2 or HDOS 2.0, 5.25-inch floppy disk drive, external dual 5.25- or 8-inch floppy disk drives, H14 or H24 printer

Heath H-100 (1983, desktop)
Base Configuration: 8085 and 8088 CPUs, CP/M-85 and Z-DOS, five S-100 slots (four open), 128K RAM (768K max), 5.25-inch floppy disk drive, integral monochrome CRT, integral keyboard/keypad, two RS-232C and one parallel port, Z-BASIC
Video: 25-line x 80-column text, 640 x 225 graphics, eight colors

Heath HS-151 Personal Desktop Computer (1984, desktop PC)
Original Retail Price: $1,899 to $2,199 kit, $2,699 to $4,799 assembled
Base Configuration: 4.77MHz 8088 CPU, MS-DOS, four ISA slots, 128K RAM (640K max), 5.25-inch floppy disk drive, RGB and composite ports, keyboard/keypad, two RS-232 and one parallel port
Video: 640 x 200 graphics
Size/Weight: 16 x 6.25 x 16.5 inches, 42 lbs.
Important Options: second 5.25-inch floppy disk drive, 10MB hard disk drive

Heath HS-161 Personal Portable Computer (1984, transportable PC)
Original Retail Price: $2,799 to $3,199
Base Configuration: 4.77MHz 8088 CPU, MS-DOS, four ISA slots, 128K RAM (640K max), 5.25-inch floppy disk drive, integral 9-inch monochrome CRT, RGB and composite video ports, keyboard/keypad, two RS-232 and one parallel port
Video: 640 x 200 graphics
Size/Weight: 19.5 x 8.37 x 19.12 inches, 39 lbs.
Important Options: second 5.25-inch floppy disk drive, 10MB hard disk drive

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