What year was a functioning Difference Engine built from Babbage's original plans?
1991
1985
2000
1975
Answer
In 1991, a functioning Difference Engine was constructed using Charles Babbage's original plans. The successful completion of the engine demonstrated that Babbage's designs would have worked if they had been built during his lifetime.
Cracking the Code: The Charles Babbage Chronicles - A Quiz on the Father of Computing!