Let me think.......
Why are u asking me u should know it.
Blaise Pascal
Blaise Pascal
Pascaline
Gottfried Leibniz
it yor face your face
Pascaline
The 'Difference Engine' - it was a mechanical calculator.
The history of the calculator begins with the abacus was a sort of hand operated mechanical calculator using beads on rods. It was first used by Sumerians and Egyptians around 2000 BC.
Abacuses, a calculator's predecessor was used as early as 2400 B.C. A German named Wilhelm Schickard invented the first digital mechanical calculator in 1623. The first smaller calculators, called comptometers were invented in 1884 by a U. S. citizen named Dorr E. Felt. There were numerous other upgrades after this including one built into a desk, made by the Japanese, but that is all I wish to say.
Invented by Blaise Pascal (1623-1662), it was called a Pascaline, a mechanical calculator that used connected gears to perform additions.
he invented the first mechanical calculator.
The oldest calculator, the abacus, was invented in ancient Egypt(unknown date). The first Mechanical calculator, known as the Calculating clock, was invented by Willhelm Schickard in 1623. The first electronic desktop calculator were announced by the Bell Punch Co, in Uxbridge England in 1961. Finally, the first handheld computer was invented in 1980.