Mario Bellini, Divisumma 18, Olivetti | Innovation design, Icon design, Control panels
File:Divisumma 18 calculator, designed by Mario Bellini & A. De Gregori, Olivetti & Co., Milan, 1973, plastic case - Museum für Angewandte Kunst Köln - Cologne, Germany - DSC09676.jpg - Wikipedia
Divisumma 18 Electronic Calculator by Mario Bellini for Olivetti, 1973 for sale at Pamono
Divisumma 18 - Wikipedia
Olivetti Divisumma 18
File:Olivetti Divisumma-14.jpg - Wikipedia
Olivetti Divisumma 18
Olivetti Divisumma 18 Poster | designed by Egidio Bonfante f… | Flickr