The 17th Century
William Oughtred invents the slide rule in 1622 and is revealed by his student Richard Delamain in 1630.[2] Wilhelm Schickard built the first automatic calculator called the “Calculating Clock” in 1623. [3]Some 20 years later, in 1643, French philosopher Blaise Pascal invented the calculation device later known as the Pascaline, which was used for taxes […]
