Blaise Pascal's (1623-1664) digital counting machine (1642) showing (top) two of the train of number wheels which were viewed through windows in the casing of the machine. From Denis Diderot Encyclopedie, Paris, 1751-1780. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Heritage Images / Ann Ronan Picture Library |
Taille de l’image : | 2572 px × 4075 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |