The personal computing revolution started in 1974 with the 2 MHz Intel 8080, Intel’s first 8-bit CPU capable of addressing 64 KB of memory. (The earlier 8008 from 1972 could only address 16 KB.) But there was a parallel path, a new CPU family that Motorola launched in 1974.
In 1977, Radio Shack became one of the first companies to sell personal computers, but it didn’t have a model with color graphics until 1980. This is the story of the Radio Shack Color Computer.