Who developed a mechanical device in the 17th century that could add, subtract, multiply, divide and find square roots?
Leibnitz developed a mechanical device in the 17th century that could add, subtract, multiply, divide and find square roots.
A mechanical computer is built from mechanical components such as levers and gears, rather than electronic components. The most common examples are adding machines and mechanical counters, which use the turning of gears to increment output displays.