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Pascal's adding machine, known as the Pascaline, used a series of interlocking gears and wheels to perform addition and subtraction. When a user turned the dials corresponding to numbers, the gears would rotate, carrying over values to the next column when a sum exceeded ten, similar to how one carries over in decimal addition. The machine could add numbers up to 9999 and was one of the first mechanical calculators, demonstrating early concepts of mechanical computation.

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1.Abacus 2.Pascals Adding machine 2.Difference Engine 3.Analytical engine above were earliest computing devices.


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It did multiplication by repeated addition and shifting whereas Pascal's couldn't.


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What does the Stepped Reckoner pascals machine couldn't?

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