This dictionary offers a ready reference to the biographies of more than 160 individuals prominent in the history of data processing. It includes scientists, engineers, government officials, executives of major computer manufacturing companies, and users of data processing technology, and extends in time from antiquity through the 1980s. In an attempt to inform readers at all levels of specialization, the volume gives basic information to the general reader while providing reference materials that will serve the specialist as a starting point for further research.