Who developed a mechanical device in the 17th century that could add, subtract, multiply, divide and find square roots ?
Correct answer: C. Leibnitz
- A. Pascal
- B. Napier
- C. Leibnitz
- D. Babbage
Explanation
Gottfried Wilhelm Leibniz developed the Stepped Reckoner in the 17th century, a mechanical calculator capable of addition, subtraction, multiplication, division, and square-root operations. Pascal’s earlier Pascaline mainly handled addition and subtraction.
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