© 1976 by British Computer Society
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The difference engines
Department of Computer Science, University of Calgary, Calgary, Alberta, USA
This is a survey paper which deals with the development of the difference engines from their conception by Müller in 1786, through the attempts of Charles Babbage, their realisation by the Scheutz team, and their final practical use by Comrie in the period before the Second World War. The circumstances behind the development of the most famous engines are described in moderate detail, while the machines of secondary importance are mentioned in an attempt to cover the overall development of these special purpose devices.
Received July 1974.
* Department of Computer Science, University of Calgary, Calgary, Alberta, Canada T2N 1N4