#Onthisday in history Blaise Pascal was born 19th June 1623 A.D. and died 19th August 1662 A.D. he was a French Mathematician, Physicist , writer, inventor and a Christian Philosopher. He was a child prodigy who was also educated by his Father, a Tax collector in Rouen. His earliest work was in the natural and applied sciences, he also made vital contributions to the study of fluids and clarified the concept of pressure and vacuum, which is generally attributed to the works of Evangelista Torricelli. He also wrote in the defence of the scientific method.

In the year of 1642 A.D. he was still a teenager but he started pioneering work on the calculating machines. But after the three years of effort and prototypes. He built 20 finished machines called the Pascal’s calculators.