TRS-80 Color Computer-1 As taken directly from the Color Computer FAQ, by Steve Secord:

The first Color Computer, it was first sold in 1980 and originally had only Color BASIC, 4Kb of memory, 32-column screen, and a chiklet keyboard. It was based on a design originally from Motorola. It used a .89MHz MC6809E. A compact cassette recorder or Program Paks were used. Later versions came with 16Kb/32Kb/64Kb and Extended Color BASIC, required environment to handle disk drives. By changing memory chips, setting jumpers, and removing some capacitors, the CoCo 1 memory could be expanded up to 64Kb, minimum to run OS-9 Level 1.

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