Panasonic HHC

The Panasonic HHC was a handheld computer with a one-line LCD, modular ROM software and expansion through a distinctive docking and cartridge system.

It was an early attempt to package programmable business and field applications in a battery-powered handheld before standard notebook computers existed.

Notable Features

• One-line LCD
• Modular ROM and peripheral system
• Battery-powered handheld construction

Historical Significance

• It was an early attempt to package programmable business and field applications in a battery-powered handheld before standard notebook computers existed.

Collector’s Notes

• Application modules, printer/cassette dock and documentation are often more difficult to find than the base unit.
• Memory, storage, displays and expansion hardware should be documented because configurations often changed during a system’s working life.

Specifications

Technical Information
Name	Panasonic HHC
Manufacturer	Panasonic
Launched	Thursday, January 1, 1981
Country	Japan
CPU	CMOS 6502-family processor
Units Sold
Form Factor	Handheld computer
Power	AA batteries or AC adapter
Networking	None
Operating System	Application firmware and BASIC options
Expansion / I/O	ROM modules and proprietary peripheral dock
Keyboard	Integrated calculator-style keyboard
Storage	Internal memory and optional cassette through dock
Sound	Beeper
Colours	Monochrome
Graphics	Text display
Display	Single-line LCD
ROM	Application ROM modules and system firmware
RAM	4 KB standard; expandable
CPU Speed	Approximately 1 MHz