Leibniz’s calculating machine

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  • 1694

Hardware Description

Leibniz’s calculating machine (around 1694). Only a single calculating machine of Gottfried Wilhelm Leibniz has survived. The (lockable) stepped drum construction is viewed as the first four-function machine. The implementation of the tens carry proved to be difficult (© Gottfried-Wilhelm-Leibniz-Bibliothek – Niedersächsische Landesbibliothek, Hanover).
Bruderer, Herbert: Milestones in Analog and Digital Computing, Springer Nature Switzerland AG, Cham, 3rd edition 2020, 2 volumes
Bruderer, Herbert: Meilensteine der Rechentechnik, De Gruyter Oldenbourg, Berlin/Boston, 3. Auf-lage 2020, Band 1
Bruderer, Herbert: Meilensteine der Rechentechnik, De Gruyter Oldenbourg, Berlin/Boston, 3. Auf-lage 2020, Band 2
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