Pascal's calculator (also known as the arithmetic machine or Pascaline), a mechanical calculator invented by Blaise Pascal in the early 17th century. Pascal was led to develop a calculator by the laborious
La Pascaline (calculation machine of Blaise Pascal)
Amazon.com: Pascaline Mechanical Calculator 1642 Poster Print by Science Source (24 x 18): Posters & Prints
Definition of Pascaline | PCMag
Pascaline; a mechanical calculator invented by Blaise Pascal in 1642. The wheels are numbered from 0-10 and correspond to units, tens, hundreds, thousands, tens of thousands, and hundreds of thousands Stock Photo - Alamy
Blaise Pascal - first digital calculating machine | Educalc.net