Inventor of calculator in 20 centuary
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PASCAL was the inventor
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The comptometer was the first commercially successful key-driven mechanical compometer, patented in the United States by Dorr E. Felt in 1887.
And it got world wide famous in the 20th century.
And Pascal was the first to invent calculator before 17th century.
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And it got world wide famous in the 20th century.
And Pascal was the first to invent calculator before 17th century.
HOPE IT WILL HELP YOU
PLEASE MARK ME AS BRAINLIEST.PLEASE
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