TS-Desk is a discontinued range of all-in-one desktop computers manufactured by Theorysonic.
Theorysonic invented the first computer with GUI operating system from 1965 to 1973. The prototype of the TS-Desk was exhibited in 1968. The prototype uses the TheoryTron TS-421 television set as the monitor while the keyboard and the console were homemade and they're assembled in the homemade wooden case. In 1985, Theorysonic announced the TS-Desk line is canceled and replaced by the TheoryDesk line, making TS-Desk VI the last TS-Desk computer.
The TS-Desk runs TS-OS.