The Thomson TO 8 is the successor of the Thomson TO 7/TO 7/70. This machine was, like the Thomson MO 5 very used in french schools. It was compatible with the TO 7 and the other members of its family (Thomson MO 6, Thomson TO 9 and Thomson TO 9 plus). It has three basics on ROM : The Basic 1.0 of the TO7, The Basic 512 and the Basic DISK. Almost all memory (235 KB) was accessible with basic thanks to a transparent 16 KB bank switching mechanism and up to 17 programs can be loaded simultaneously in memory and it is possible to switch between them. An optional 3.5" floppy disk drive (640 KB) was available.
A new version of the TO 8 was launched few times after, the Thomson TO 8D, this computer had the same characteristics but had a built-in 3.5" floppy disk drive.