Ever heard of the Baghdad Battery? http://en.wikipedia.org/wiki/Baghdad_Battery Its possible that an Ancient culture had the capacity to create electricity.
Greeks from way back when were really smart. Archimedes invented all kinds of highly advanced technology that we use today. A water pump. A giant claw that Greece used to attack ships with. Supposedly a large heat ray to sink ships. a bunch of advanced mathematics too
Yes I actually have heard of that. But electricity is easier than a computer IMO. That many gears and such is harder to believe.