The first computer used in Switzerland was the Zuse Z4, an electromechanical calculating machine that was developed in Germany during the Second World War, expanded after the end of the war, and made available on loan to the Institute for Applied Mathematics at ETH Zurich in the early 1950s.
1955_ComputerZuse_@Fotografie von Hans Gerber, 1955 (ETH-Bibliothek Zürich, Bildarchiv, Bestand Comet Photo AG, Com_M04-0265-0002).