Associazione Archivio Storico Olivetti - Olivetti "Divisumma 24" calculating machine

The Divisumma 24 is a super-automatic writing calculator from 1956 designed by Natale Capellaro and designed by Marcello Nizzoli. It is capable of performing all four operations and has a memory. Thanks to this product, Olivetti "takes home" the prize for technological innovation: the Divisumma 24 is a jewel of precision mechanics and has no rivals on the world market. The machine remained on the market until the early 1970s; in 1967, the millionth unit was produced.