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 ...

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 manually operated, non-printing ...

THE news has recently been released of a major advance in the development of equipment for extensive numerical calculations, in the successful completion of a large calculating machine based on the ...

Frustrated by human error, mathematician and inventor Charles Babbage designed a machine to perform mathematical functions and automatically print the results. Library of Congress When today’s number ...

A "memory system" capable of storing 64,000 digits and leading a computing machine through a complex mathematical problem of 4000 steps was shown at the unveiling of Harvard University's new Mark III ...