Personal Computer Museum

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The evolution of the first model sold by RadioShack that had the integrated screen.

Technical specifications of computer Tandy TRS-80 Model III

Manufactured by: Tandy
Launched: 1980
Units shipped: 0
Manufactured in USA
CPU: Zilog Z80 @ 2MHz
Memory: 4 KB ~ 48 KB
Hard drive: None
Operating system: TRSDOS

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Contemporary computers of Tandy TRS-80 Model III


Manufacturer: Sinclair
CPU: NEC D780C (Z80 clon) @ 3.25 MHz


It was the first computer available in the UK for one hundred pounds.

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Manufacturer: Commodore
Launched: Apr 1980
CPU: MOS Technology 6502 @ 1.108 MHz


This device was designed to compete with video game consoles using inexpensive components.

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Manufacturer: Apple
Launched: May 1980
CPU: Synertek 6502 @ 2 MHz


The Apple computer that wanted to take over the office market.

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Manufacturer: Tandy
Launched: Sep 1980
CPU: Motorola 6809E @ 0.895 MHz


The second model sold by RadioShack.

Despite sharing a name with the previous TRS-80, the Color Computer is a completely different and incompatible system, a radical change in design and compatibility with its Motorola 6809E processor instead of the previous Zilog Z80 models.

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