In 1671, Gottfried Wilhelm von Leibniz invented a computer that was built in 1694. It could add, and, after changing some things around, multiply. While Thomas of Colmar was developing the desktop calculator, a series of very interesting developments in computers was started in Cambridge, England, by Charles Babbage (left, of which the computer store "Babbages" is named), a mathematics professor. With financial help from the British government, Babbage started fabrication of a difference engine in 1823. It was intended to be steam powered and ....