Who developed a mechanical device in the 17th century that could add, subtract, multiply, divide and find square roots?

Who developed a mechanical device in the 17th century that could add,

1.	Who developed a mechanical device in the 17th century that could add, subtract, multiply, divide and find square roots?
A.	Napier
B.	Babbage
C.	Pascal
D.	Leibnitz
E.	None of the above
Answer» E. None of the above

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Who developed a mechanical device in the 17th century that could add, subtract, multiply, divide and find square roots?

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