Introduced in 1984, the Thomson MO5 is the first computer in the MO series. It will be discontinued in 1986, when the MO6 will replace it.

Like most 8bits computers, the MO5 has it's OS (aka Monitor) and a BASIC interpreter built in ROM. The floppy controller comes with an additional ROM, and will automatically boot floppies. The floppies contain an extended BASIC (Disc BASIC) that adds commands to the ROM one, mostly to help with disc access.

There are several versions of the MO5. The first revision is not compatible with the RAM expansion. All the later ones are. The MO5 was later upgraded to get a mechanical keyboard, and there was a “Michel Platini” limited edition (just a different color for the case).

• Lightpen
• Tape
• 17V input
• SCART Video output
• Expansion port
• Cartridge port