I think most of the "feature sizes" that Charles Babbage worked with were smaller than that. 300mm is actually a standard wafer size. I think that's what most

I think most of the "feature sizes" that Charles Babbage worked with were smaller than that. 300mm is actually a standard wafer size. I think that's what most modern fabs use now; there was some push to move to 450, but I think the major players have all determined it to be more trouble than it's worth for now. I don't keep up-to-date on these sorts of things though so maybe 450mm wafers are used for some significant products now. That said, the wafer size doesn't really tell you anything about how advanced their lithography is.