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 ...

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 ...