Rockefeller Differential analyzer
a one-hundred-ton machine with 2000 vacuum tubes and 150 motors, and weighed 100 tons
It was an analog computer. An analog computer carries out an analogy of a real physical process
It was invented 1942 (19 St. 16 Min, 26 Nov 1860 Jahr – 14 St. 5 Min, 21 März 1942 Jahr)