The very first calculator ever used could be an abicus, an electronic calculator, or even your brain. The first calculator invented was the abacus.
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the first ever calculator was said to be used by Blaise Pascal's father to count his money.
A calculator is used to find mathematical equation that are very difficult. Calculators also help to make life easier with the use of technology.
i am used to count some call this a manual calculator it's also called abacus
The first calculator was never launched, because it was in fact a mechanical calculator.
A Texas Instruments graphing calculator can be used as a basic calculator, a scientific calculator and a graphing calculator.