How do computers and electronics actually work?

I know the mechanics of computers and the other parts to them and how they function but how did they get the function to function? No matter how hard I think, I can't think of how computers and other things got the function to function? Like, how did the people develop an artificial code and put it into the chips and things to allow them to function? It seems impossible but it is possible because we have it. Like, how can people put codes into metal and other non-living substances to allow them to support articifial intelligence and things? Like, people can type, use programs, access and do things on computers just because of chips and other components to computers. How and why is it possible?
______________________________

Wood Flooring|Flooring