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A series of personal computers sold by Tandy Radio Shack. The '80' refers to the use of Zilog Z-80 processor (NOT Intel 80x8x).

There were 7.5 computers in the TRS-80 line: Models I, II, III, 4, 100, 102, 200. The Model 4P was a portable version of the Model 4 with no tape drive -- only 2 1/2-height single sided disk drives.

Later models that Radio Shack produced were not TRS-80 machines -- they were based on the Intel 80x8x architecture. These included Tandy 1000, Tandy 2000, Tandy 3000, and others. The 1000 had a proprietary Color card. The 2000 was a powerful machine for its time, but was based on the Intel 80186, so when IBM didn't build a computer based on this chip, it failed. It was used to design a boat for the America's Cup.

The TRS-80 GUI, DeskMate, was proprietary, but no more than Windoze at the time.

Many joke about "TRaSh-80" machines but several models were in fact classics of their time.


(Tandy RadioShack-80) An early line of personal computers from Tandy Corporation (later renamed RadioShack). In 1977, the TRS-80, along with the Apple II and Commodore PET, ushered in the personal computer revolution. The operating system for the TRS-80 was TRS-DOS, sometimes affectionately called "Trash-DOS." See RadioShack and personal computer. See also TSR.

The TRS-80
This ad suggested every home should have a TRS-80. At an initial price of USD $599, it was relatively affordable, and it contributed to the explosion of personal computers in the 1980s. (Image courtesy of RadioShack Corporation.)
References in periodicals archive ?
First an IBM XT-compatible Tandy 1000 and then an IBM AT-compatible Tandy 3000 supplanted the TRS-80, and 27 or so MS-DOS machines were purchased for placement around the school.
In the days of the TRS-80 and the Apple II, I had a hammer and everything in the world was a nail.
Throughout more than 18 years in the videogames industry, Rob Craig has designed and created games for dozens of gaming platforms starting with the TRS-80 computer, Commodore 64, Atari 2600 and expanding to Internet, wireless, location-based systems and interactive television.
In the late 1970s, Bob bought one of the very first Radio Shack computers, the TRS-80, and taught himself to use it and then to write programs; he wrote two programs for use in his medical office.
The school had a Radio Shack TRS-80 (affectionately known as the "Trash 80") and a Commodore Pet.
In 1982 it was a nationwide asbestos litigation database running on a Wang minicomputer and accessible through portable TRS-80 computers.
Joe has 25 years' experience as a software developer and has been a personal computing enthusiast since purchasing a TRS-80 Model 1 in 1980.
BUSINESS WIRE)--March 31, 1998--Perseus today announced the immediate availability of a new version of Perseus SurveySolutions written specifically for the Tandy/Radio Shack TRS-80 Model I.