Tandy 1000 HX

The Tandy 1000 HX updated the keyboard-integrated EX with a 720KB 3.5-inch drive and MS-DOS in ROM for fast startup. It retained the 7.16 MHz 8088 and PLUS expansion system.

The HX became one of the most recognisable Tandy home computers and offered a compact bridge between appliance-like home machines and DOS compatibility.

Notable Features

• Processing is provided by Intel 8088-2 at 7.16 MHz.
• The standard memory configuration was 256KB standard; expandable to 640KB.
• Display hardware provided Tandy/PCjr-compatible sixteen-colour graphics.

Historical Significance

• The HX became one of the most recognisable Tandy home computers and offered a compact bridge between appliance-like home machines and DOS compatibility.
• Storage-only and minor motherboard revisions are documented on this page rather than treated as separate products.

Collector’s Notes

• Confirm the catalogue number, processor, memory and drives because similar Tandy cases were sold in several configurations.
• Original DeskMate or system disks, keyboards, monitors and Radio Shack documentation add historical value.

Specifications

Technical Information
Name	Tandy 1000 HX
Manufacturer	Tandy
Launched	Thursday, January 1, 1987
Discontinued	1990
Launch Price	$699
Country	United States
CPU	Intel 8088-2 at 7.16 MHz
Units Sold
Operating System	MS-DOS 2.11 in ROM and DeskMate
I/O	RGB, composite, printer, serial option, joysticks, external floppy and three PLUS connectors
Keyboard	Integrated keyboard
Storage	Built-in 720KB 3.5-inch floppy drive
Sound	SN76496-compatible three-voice sound plus noise
Graphics	Tandy/PCjr-compatible sixteen-colour graphics
Display	External composite or RGB monitor; 80 x 25 text
ROM	PC BIOS with MS-DOS 2.11 in ROM
RAM	256KB standard; expandable to 640KB
CPU Speed	7.16 or 4.77 MHz