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In the decades following the development of the first electronic digital computers, the computer industry in the United States grew from nothing into an important and expansive sector of the American economy. Whereas in the early 1950s electronic computers were generally regarded as interesting but extravagant scientific curiosities, by 1963 these devices and their associated peripherals formed the basis of a billion-dollar industry. By the beginning of the 1970s, more than 165,000 computers had been installed in the United States alone, and the computer and software industries employed several hundred thousand individuals worldwide.
Nathan Ensmenger (Fri,) studied this question.