Calculating Machine

The 17th Century - Calculating Clocks: Unsuccessful Mechanical Calculators
... Both Pascal and Leibniz tried to design some kind of calculating clock before inventing their machines ... those who have curiosity to see the Arithmetic Machine, and to operate it, (1645) When, several years ago, I saw for the first time an instrument which, when carried, automatically ... The only 17th century calculating clocks that have survived to this day do not have a machine wide carry mechanism and therefore cannot be called mechanical calculators ...

Pascal's Calculator - History - Tercentenary Celebration
... his achievement...when he invented the calculating machine - essentially a practical instrument - Pascal was already well known in the realm of pure mathematics ... The invention of the calculating machine illustrated Pascal's extraordinary creative imagination, allied with mathematical genius and precision, and tempered with critical penetration ... René Cassin, Pascal tercentenary celebration, London, (1942) Pascal's invention of the calculating machine, just three hundred years ago, was made while he was a youth of nineteen ...

Carl Friden - Friden Calculating Machine Company
... Carl Friden left the Marchant Calculating Machine Company in 1934 (during the Depression) to establish his own calculator company ... already had a number of patents to his credit, including an early calculating machine ...