which is the first calculating device who was the inventor of it
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Answer:
Pascal's calculator
Explanation:
Pascal's calculator (also known as the arithmetic machine or Pascaline) is a mechanical calculator invented by Blaise Pascal in the early 17th century. Pascal was led to develop a calculator by the laborious arithmetical calculations required by his father's work as supervisor of taxes in Rouen.
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the calculation device is abacus and it was invented by Canmer about in 500BC
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