Multiple choice technology operating systems

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

  1. Napier

  2. Babbage

  3. Pascal

  4. Leibniz

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gottfried Wilhelm Leibniz developed the Stepped Reckoner in 1673, a mechanical calculator that could add, subtract, multiply, divide, and find square roots. Napier invented logarithms, Babbage designed the Analytical Engine (19th century), and Pascal built the Pascaline (addition only).