Pascal's (1623-1664) digital counting machine (1642) showing; top; two of the train of number wheels which were viewed through windows in the casing of the machine. Engraving from Denis Diderot Encyclopedie; Paris; 1751-1780

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TOP29133305

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達志影像

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RM

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須由TPG 完整授權

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no

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no

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No

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