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Before Torchi and Schwilgué, there was White

Denis Roegel 1
1 MOSEL - Proof-oriented development of computer-based systems
LORIA - FM - Department of Formal Methods
Abstract : This brief note pushes further back the invention of key-driven calculating machines. Until recently, it was thought that the first such machine was Du Bois D. Parmelee's in 1850. Then, notice was made of Jean-Baptiste Schwilgué's machine (1844), then of Luigi Torchi's (1834), and now of James White's (1822). (Reprinted from IEEE Annals of the History of Computing, Institute of Electrical and Electronics Engineers, 2016, 38 (4), pp.92-93)
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Contributor : Denis Roegel <>
Submitted on : Tuesday, June 6, 2017 - 3:23:20 PM
Last modification on : Tuesday, December 18, 2018 - 4:38:25 PM


  • HAL Id : hal-01533478, version 1



Denis Roegel. Before Torchi and Schwilgué, there was White . ComputingEdge, IEEE Computer Society, 2017, pp.42-43. ⟨hal-01533478⟩



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