Difference Engine

The Difference Engine is a mechanical calculator developed by Charles Babbage in 1822. It can compute several sets of numbers and make a hard copies of the results. Due to a lack of funding, he was never able to complete a full-scale functional version of this machine. However, in June 1991, the London Science Museum completed the Difference Engine No. 2 for the bicentennial year of Babbage's birth and later completed the printing mechanism in 2000. Below is a video from Wired magazine that gives a good overview of the Difference Engine No. 2 shown at the Computer History Museum.

Analytical Engine, Computer History, Engine, Hardware terms, Machine