This Day in History: April 22

Today: December 9, 2016
Mechanical Calculator Designer Schickard Born

April 22, 1592

Mechanical Calculator Designer Schickard Born

Wilhelm Schickard, creator of an early calculating machine, is born in Germany. Schickard uses wooden gears to build an adding machine in 1623, called the "calculating clock," that could add and subtract up to six-digit numbers.