7th August 2003, 2:36 PM
Hard to say, but the computer's most basic construct can be traced all the way back to the 1800's, before electricity (well, before it got used by us). It was something called the analytical engine.
"On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question." ~ Charles Babbage (1791-1871)