> Two centuries ago Leibnitz invented a calculating machine which embodied most of the essential features of recent keyboard devices Mmm, not exactly. The firs

> Two centuries ago Leibnitz invented a calculating machine which embodied most of the essential features of recent keyboard devices Mmm, not exactly. The first calculating machine was invented by Blaise Pascal in 1642, three centuries before that article was written. Leibnitz "expanded on Pascal's ideas" [0] and produced his version of the machine in 1673. [0] http://www.gwleibniz.com/calculator/calculator.html http://www.gwleibniz.com/calculator/calculator.html