Replica, made by E Rognon in 1926. Blaise Pascal (1623-1662), was France´s most celebrated mathematician and physicist. This calculator is an exact re... - SuperStock
Pascal's calculator, mechanical calculator invented by Blaise Pascal (1623-1662) in ca 1645, Stock Photo, Picture And Rights Managed Image. Pic. DAE-10179835 | agefotostock
The Schickard Calculator from 1623
The History Of The Calculator: When was the Calculator First Invented?