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Replica of Pascal's calculator | Science Museum Group Collection
Calculating machine invented by Blaise Pascal (1623-63) in 1642 (wood and metal)
75 Pascal Calculator Photos and Premium High Res Pictures - Getty Images
Alberto Tufaile on Twitter: "@MIT_CSAIL Pascal's calculator (also known as the arithmetic machine or Pascaline) is a mechanical calculator invented by Blaise Pascal in the mid 17th century. https://t.co/SDx5N20rXp https://t.co/ELKibH2I5a" / Twitter
Blaise Pascal - first digital calculating machine | Educalc.net