Charles Babbage, the 19th century British mathematician, philosopher, and engineer, has been called the "father of computing" for the powerful calculating machine he devised in the 1830s: the Babbage Analytical Engine. Babbage never built it, but now a team of British researchers at the Science Museum in London are combing through his blueprints to see if they can –  and to see see if it works.    John Graham-Cumming is a programmer working on creating the Babbage Analytical Engine.