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 16 K words (of 32 bits) rotating at 3000 rpm (50 rotations/s) and could invert a square matrix of order 25 in half an hour.
References
CAB500 Wikipedia(Text) CC BY-SA