Leibniz Calculating Machine

The first great mathematical success of Gottfried Wilhelm von Leibniz (1646 - 1716) was his creation of a calculating machine in 1672. It was apparently the first machine capable of multiplication, division, and root extractions, and was impressive enough to get Leibniz elected to the Royal Society of London in 1673.

Source: http://world-information.org/wio/program/objects/1039194997