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How was the Rockefeller Differential Analyzer different from the earlier Differential Analyzer?
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Vannevar Bush
The first modern analog computer, the Differential Analyzer could solve certain classes of differential equations.
The Rockefeller Differential Analyzer, completed in 1935, was a more advanced iteration of the original differential analyzer developed by Vannevar Bush in 1931.12
While the earlier machine relied on a complex arrangement of gears, cams, and steel shafts to solve differential equations, the Rockefeller version was significantly more powerful. It stood as the most capable analog computer available prior to the emergence of digital computers around 1945. Due to its superior processing capabilities, the Rockefeller Differential Analyzer was specifically enlisted by the military during World War II to calculate ballistics tables, a task that demonstrated its increased utility over its predecessor.12