CAB500
The CAB500 was a French transistor-based drum computer, designed at SEA around 1957 by Alice Recoque.

The computer had an incremental compiler for a language, PAF (Programmation Automatique des Formules) similar to Fortran, designed by Dimitri Starynkevitch in 1957-1959. CAB 500's first model was delivered in February, 1961, and more than a hundred exemplars were built.  It had a magnetic drum memory of   rotating at   and could invert a square matrix of order 25 in half an hour.

The CAB 500 weighed about .

References 

Transistorized computers