TRS-80 Model II was developed by Radio Shack., Released in 1979 Launched in October 1979. Despite its name, the Model II was not an upgrade of the original (Model I) TRS-80, but an entirely different system.
TRS-80 Model I was developed by Radio Shack., Released in 1978 Other Informations: The Model I combined the mainboard and keyboard into one unit, in what was to be a common case design trend throughout the 8-bit microcomputer era, although it had a [...]
