Rockefeller Differential Analyzer

The as Rockefeller Differential Analyzer was an analog computer, which was developed in the 1930s with funding from the Rockefeller Foundation of Vannevar Bush and Samuel H. Caldwell.

The Rockefeller Differential Analyzer represents an evolution of the differential analyzers. The mechanical components of this analog computer should be replaced by electronic ones. Data entry was carried out from 1935 via tape. The computing machine weighed 100 tons, in her 2000 tubes, over 300 km of cable, 150 engines and thousands of relays were used.

She was ready since 1942, but was made ​​public because of the war until after 1945. The Rockefeller Differential Analyzer was until the end of the Second World War, the most powerful computing machine.