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The very first calculator ever used could be an abicus, an electronic calculator, or even your brain. The first calculator invented was the abacus.
It is one of the first hand held caculator but was invented by many people!!!!!!!!
The first solid state electronic calculator was invented in the 1960's. They are available in many different sizes. Smaller ones hold less capacity than say a graphing calculator that has more functions.
who invented the first mechanical digital calculator
it is an electronic