The Thomson MO5 is a home computer introduced in France in June 1984[2] to compete against systems such as the ZX Spectrum and Commodore 64.

This is done by a PROM circuit, where a two bit mask controls colour mixing ratios of 0%, 33%, 66% and 100% of the saturated hue.

The machine used cassette tapes for file storage, played on a proprietary player connected using a 5-pin DIN connector.

A RAM expansion adding extra 64 KB and a "Nanoréseau" network card could be plugged into it, but was incompatible with early MO5 machines.

[10][11] The MO5 was sold in a version featuring a mechanical keyboard and a white casing, in a limited edition named MO5 Michel Platini.

[12] An improved version, named Thomson MO5E ("E" for "Export", a model designed for foreign markets) was presented in 1985.