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History
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Prototype of the first all-electronic desktop calculator marketed by Sumlock Comptometer Ltd of the UK
Prototype of the first all-electronic desktop calculator marketed by Sumlock Comptometer Ltd of the UK
The macaroni box (1885)
The macaroni box (1885)
Model A (1905)
Model A (1905)
Model J (1930s)
Model J (1930s)
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Four of Pascal's calculators and one machine built by Lépine in 1725, Musée des Arts et Métiers
Four of Pascal's calculators and one machine built by Lépine in 1725, Musée des Arts et Métiers
Replica of Schickard´s calculator
Replica of Schickard´s calculator
Detail of a replica of an 18th-century calculating machine, designed and built by German Johann-Helfrich Müller.
Detail of a replica of an 18th-century calculating machine, designed and built by German Johann-Helfrich Müller.
A mechanical calculator from Anton Braun, dated 1727
A mechanical calculator from Anton Braun, dated 1727