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From Analytical Engine to Electronic Digital Computer: The Contributions of Ludgate, Torres and Bush

Lookup NU author(s): Professor Brian RandellORCiD



This paper, based on an invited lecture given at MIT in March 1980, discusses the little-known work of Percy E. Ludgate (1883-1922), Leonardo Torres y Quevedo (1852-1936), and Vannevar Bush (1890-1974). These three inventors, who apparently were unaware of one another's existence, were all directly influenced by knowledge of Charles Babbage's Analytical Engine, and each played a significant role in the history of the development of program-controlled computers.

Publication metadata

Author(s): Randell B

Publication type: Article

Publication status: Published

Journal: IEEE Annals of the History of Computing

Year: 1982

Volume: 4

Issue: 4

Pages: 327-341

Date deposited: 07/12/2011

ISSN (print): 1058-6180

ISSN (electronic): 1934-1547

Publisher: IEEE Computer Society


DOI: 10.1109/MAHC.1982.10042


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