Who Invented Calculators
French Blaise Pascal invented the calculator.
He did this to help his dad who was a tax adjuster. Then Gottfried Leibnitz
improved on Pascal idea with a machine that would add, subtract, multiply,
John Napierin invented the movable multiplication
table engraved on a series of square section metal rods, called Napiers
We tend to take a cheap hand held calculator for
granted. They're easy to use and it's hard to imagine life with out them.
But not very long ago a hand held calculator was very expensive and very
different from the ones we use today.