Olivetti 'Divisumma 18' portable calculator

Bellini, Mario

1973

Portable calculator, 'Divisumma 18', plastic / rubber / metal / electronic components, designed by Mario Bellini, made by Olivetti, Ivrea, Italy, 1973

Powerhouse

A yellow and peach Olivetti Divisumma 18 portable calculator is shown from a top-down perspective against a white background. The calculator features a numerical keypad, function buttons, and a small display screen with a paper roll. A portable printing calculator made of heavy duty moulded yellow plastic. The main body of the calculator includes the keyboard and printer and has soft touch rubber moulding which covers the keyboard area. There is a sliding On/Off switch left of the keyboard and a selector for 0, 2, 3, or 4 fixed decimal places. At the far left a small red lamp indicates a low-battery and doubles as an error warning. The synthetic rubber keypad is soft to touch but the mechanism beneath has been designed with spring steel which imparts a light but positive action. The Olivetti Divisumma 18 portable calculator was designed by Mario Bellini. Bellini