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As early as 300BC, before numbers were invented, the Abacus was used to keep track of the sale of goods
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The Pascaline was the first adding and subtracting machine. It was invented by Blaise Pascal in France. He developed it to deal with taxes.
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The first vaccum based caclulator is intorduced by Anita
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Sharp introduces the first transistor calculator called the CS-10A
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After many revisions to the calculator, Sharp introduces the first electric calculator.
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Texas instriments introduces the TI-83, an advanced graphiing calculator
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The first color screen, computer algebra system calculator is introduced by Texas Instruments
