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Computing (FOLDOC) dictionary
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computer A series of personal computers sold by TandyRadio 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 Intel80186, 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.