Invented by Leonardo Torres in 1920, the Torres calculating machine is a machine that solves essential addition, subtraction, multiplication, and division problems using a simple manner. It was a ...

In 1867, Frederick A. P. Barnard, a mathematician and the president of Columbia University in New York, served as a judge at the Exposition universelle, a world’s fair held in Paris. There he saw a ...

“The first digital use of the transistor for consumers was in a calculator,” says Rick Bensene, curator of the Old Calculator Web Museum. Our series on the birth of the transistor — and with it, the ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This full-keyboard manually operated ...

One of the world's first calculating machines will not go to auction as scheduled in France, after a Paris court provisionally blocked the historic item from being exported. Auction house Christie's ...

La Pascaline, the first mechanical calculator [AFP via Getty Images] One of the world's first calculating machines will not go to auction as scheduled, France, after a Paris court provisionally ...