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193
Figure wheel and drawing by Charles Babbage, 19th century.
Figure wheel and drawing by Charles Babbage, 19th century.
'Magic Brain' calculator, c 1960.
William Oughtred, English mathematician, 17th century.
'Baby Calculator', 1958-1962.
Napier's Bones, c 1690.
Design for Clifton Suspension Bridge by I K Brunel, c 1830.
'Anita' Mk VIII electronic desk calculating
William Oughtred, English mathematician, 1646.
A sectioned Sinclair Executive pocket calculator, 1972.
Brunsviga calculating machine, c 1950.
John Napier, Scottish mathematician, c 1600s.
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