The Babbage Engine Exhibit opens May 10 at the Computer History Museum in Mountain View, Calif. The central artifact of the exhibit, a faithful construction of Englishman Charles Babbage's Difference ...

The Computer History Museum in Mountain View, Calif., willl unveil a recreation of Charles Babbages 19th century mechanical digital calculator, the Difference Engine No. 2. Starting in May, many will ...

As you might expect from its name, the "Difference Engine" is a strangely difficult object to describe. You might start by imagining the side of a large crib with uprights ringed by small metal wheels ...