Pascal's Arithmetic Machine


  • Mechanical calculator invented by Blaise Pascal in the 1642s.
  • Add or Subtract two numbers
  • Released to the public in 1645
  • Considered the first calculator, first working calculator of the 17th century
  • Used gears and gravity to mechanically calculate numbers.
  • Blaise Pascal went through 50 prototypes before deciding on the final design.
  • One of the first mechanical calculators.
  • Refrences