Includes bibliographical references (pages 221-232) and index.

One night in the late 1930s, in a bar on the Illinois-Iowa border, John Vincent Atanasoff, a professor of physics at Iowa State University, after a frustrating day performing tedious mathematical calculations in his lab, hit on the idea that the binary number system and electronic switches, combined with an array of capacitors on a moving drum to serve as memory, could yield a computing machine that would make his life easier. Then he went back and built the machine. It worked, but he never patented the device, and the developers of the far-better-known ENIAC almost certainly stole critical ideas from him. But in 1973 a court declared that the patent on that Sperry Rand device was invalid, opening the gates to the computer revolution. Biographer Jane Smiley makes the race to develop digital computing as gripping as a real-life techno-thriller.--From publisher description.