HARDER,EDWIN,L. AND THE ANACOM - ANALOG COMPUTING AT WESTINGHOUSE

Since the end of the First World War, when the number and scale of ele ctric power networks increased, railroads were electrified, and power equipment became more complex, it has been important to do computation al analyses as part of the design process. In the interwar period and during the Second World War, Westinghouse Electric Company created a s eries of specialized analog computing devices for use in its design wo rk. These were replaced in 1946 by a general-purpose analog computer, the Anacom, which remained in operation until 1991. The following arti cle describes these machines and the man, Edwin L. Harder, who was res ponsible for many of them.