More Replicas of Historical Calculating Machines Found | blog@CACM | Communications of the ACM
Portrait of Blaise Pascal with his calculator - Stock Image - H416/0207 - Science Photo Library
Pascaline Calculator Explained — Everything You Need To Know - History- Computer
Blaise Pascal - Wikipedia
Pascaline | technology | Britannica
Mejora de color retrato de Blaise Pascal (1623-1662), un matemático francés, físico, inventor, escritor y filósofo católico y niño prodigio. Hizo contribuciones importantes al estudio de los fluidos, y aclarado los conceptos
Blaise Pascal - Complete Biography, History and Inventions -