Calculating machine designed by Pascal] / Louvet sculpt. Rue Galande No. 51. | Library of Congress
Who invented the mechanical calculator and when did they do it? Why are they not famous for this invention? - Quora
Pascaline | Mechanical Calculator, Addition Device, Subtraction | Britannica
Pascal's calculator - Wikipedia
Alberto Tufaile on X: "@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" / X