In the 1970s, inexpensive electronic calculators, using microchips, displaced adding machines altogether. Calculating machines, which could multiply (and, sometimes, divide), met a similar fate. The ...

Dalton Adding Machine James Lewis Dalton (1866-1926) (see biography of James Lewis Dalton) was a successful businessman and amateur mechanic from Poplar Bluff, Butler County, Mo. He was the owner of ...

At one point the Burroughs Adding Machine Company had around ninety percent of the calculator market. The company made a habit of buying other companies before they had a chance to become real ...