Rockefeller Differential Analyzer

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The Rockefeller Differential Analyzer was an advanced version of the Differential Analyzer invented in 1931. It was working in 1942, a year after the Zuse Z3. It was equipped with 2000 vacuum tubes, weight 100 tons, used 200 miles of wire, 150 motors and thousand of relays. The inventor of this machine was Vannevar Bush.