CAB 500
The CAB 500 (Calculatrice Automatique Binaire 500, or Binary Automatic Calculator 500) was a transistorized computer using drum memory designed between 1957-1959 by Société d'Electronique et d'Automatisme (SEA) and manufactured in about a hundred units, with the first one delivered in 1961. It was predominantly distributed in Europe, with a few units also being sold in China and Japan.