Braun ET 66

Braun ET 66, Dieter Rams and Dietrich Lubs for Braun
Pinot Dita from Kuwait, CC BY-SA 2.0

The pocket calculator with convex round buttons and a single yellow button for the equals sign.

The ET 66 built on Braun’s calculators of the 1970s. The shape and colours of its buttons have become the model for calculators on screens.

Materials: Plastic

Manufacture: Made for Braun.

The round buttons in rows.

The yellow equals button.