bn:00973537n
Noun Concept
Categories: French inventions, Blaise Pascal, Mechanical calculators
EN
Pascal's calculator  Arithmetic Machine  Blaise Pascal's calculator  Pascal's adder  Pascal calculator
EN
Pascal's calculator is a mechanical calculator invented by Blaise Pascal in 1642. Wikipedia
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EN
Pascal's calculator is a mechanical calculator invented by Blaise Pascal in 1642. Wikipedia
DISCOVERER OR INVENTOR