Of particular interest would be the theory of computation, because the construction of a mechanical computer might be accomplished much earlier—although, the construction of suitable clockwork would be required.
If you mean a universal mechanical computer (like Babbage’s analytical engine) then, as far as I know, none was ever built, because it’s actually really hard to have clockwork that good.
If you mean a universal mechanical computer (like Babbage’s analytical engine) then, as far as I know, none was ever built, because it’s actually really hard to have clockwork that good.