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Radio Shack / Tandy TRS-80 CoCo


The Tandy TRS-80 Color Computer was known to be called "CoCo" (Color Computer) by its users. It uses its own version of BASIC, "Tandy Color BASIC" instead of Microsoft BASIC which most other computers used.


CoCo 1

  • The original version of the Color Computer sported a large silver-gray case with a calculator-like "chiclet keyboard", and was available with memory sizes of 4K, 16K, or 32K.
  • The model 1 went through three revisions before the model 2 was released, which also went through several revisions before the next and final model 3. In 1983 there was even a "Micro CoCo", the MC-10.


CoCo 2

  • Radio Shack introduced the Color Computer 2 in 1983 with a new graphics chip that added support for lowercase text. During the production run for the CoCo 2, the original keyboard was replaced by a full-stroke keyboard.
  • For CoCo enthusiasts, this is the model where the name changed from Radio Shack TRS-80 Color Computer to Tandy Color Computer.


CoCo 3

  • Tandy took things to the next level with the Color Computer 3 in 1986. Memory started at 128 KB and went as high as 512 KB.
  • CoCo 3 had a new graphics chip called GIME, which gave it graphic resolutions up to 640 pixels wide by 225 rows, and up to 16 colors displayed from a palette of 64.
  • After a 10 year run, Tandy dropped the Color Computer in 1990.