Facts About The Burroughs Adding Machine The Burroughs Adding Machine can still be purchased today from sites like eBay, ...

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 ...

But once upon a time there were machines that could perform only a subset of these functions; these might be classified somewhere between computers and calculators. One such machine was the ...

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 ...

How did this venerable businessman and public figure enter the world of mechanical calculators? In the early 1900s, the ...