In 1642, at the age of 19, a French mathematician name Biaise Pascal, invented the Pascaline. The Pascaline is the first mechanical and automatic calculator.It represents the position of digit with the help of gears in it. The machine is sometimes called adding machine or Pascal’s calculator.

Gottfried Leibniz a German mathemation modified the Pascal calculator in 1673. He developed a machine called Liebniz Calculator which could perform various calculation based on multiplication and division as well.