the abacus
In 1957, IBM released the first commercial all-transistor calculator named IBM 608.
The first calculator was never launched, because it was in fact a mechanical calculator.
The very first calculator ever used could be an abicus, an electronic calculator, or even your brain. The first calculator invented was the abacus.
Blaise Pascal
No, it wasn't. The first calculator was called the pascaline.
who invented the first mechanical digital calculator
abacus Casio made the first graphing calculator in 1985.
calculator and human computers used them.
The first adding calculator machine was invented by Blaise Pascal.
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.
HELOC calculator can be found online at Free Calculator, First Niagara, and Money Zine. Other places once can find the Heloc calculator is Vertex 42 and First Tennessee.
the first ever calculator was said to be used by Blaise Pascal's father to count his money.