Which was the first calculating device ? when and by whom was it devel

1.	Which was the first calculating device ? when and by whom was it developed
Answer» ong>Answer: The first mechanical CALCULATING machine was invented in 1642 by Blaise Pascal, a 19-year-old Frenchman. Pascal's machine USED GEARS and could add and subtract. Pascal's gear system was widely used in mechanical calculators built during the next few hundred YEARS.

Which was the first calculating device ? when and by whom was it developed

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ong>Answer:

The first mechanical CALCULATING machine was invented in 1642 by Blaise Pascal, a 19-year-old Frenchman. Pascal's machine USED GEARS and could add and subtract. Pascal's gear system was widely used in mechanical calculators built during the next few hundred YEARS.

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Which was the first calculating device ? when and by whom was it developed​

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Which was the first calculating device ? when and by whom was it developed