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 ...

Most early calculating machines carried out multiplication as a form of repeated addition. To multiply, say, by thirteen, one set the carriage at its rightmost position, turned the operating crank ...

In the early 20th century, William A. Morschhauser of New York City became the exclusive American distributor of the Millionaire calculating machine. He placed machines at several United States ...

The last Pascaline arithmetic machine in private hands will be sold at Christie’s Paris on November 19 where it is expected to command a handsome sum between €2 million and €3 million ($2.4 million–$3 ...

Charles Babbage is widely recognized as a pioneer of the programable computer due to his ingenious designs for steam-driven calculating machines in the 19th century. But Babbage drew inspiration from ...