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
Pascal Team / Blaise Pascal / Pascal's calculator
65 Pascal Calculator Photos and Premium High Res Pictures - Getty Images
Pascal calculator hi-res stock photography and images - Alamy
5 Amazing Innovations and Discoveries of Blaise Pascal
Pascaline | technology | Britannica
Calculator timeline | Timetoast timelines
File:Calculating machine replica, Blaise Pascal, c. 1642, TM21265 - Tekniska museet - Stockholm, Sweden - DSC01564.JPG - Wikimedia Commons
Portrait of Blaise Pascal with his calculator - Stock Image - H416/0207 - Science Photo Library