Crazy what people can do with redstone! I wish i could do that. I can barely make a pressure plate light up a torch let alone make a calculator. Whoever can do that has my respect!

P.S. I like the music!

Thanks i'm planning a tutorial on redstone/commentary on how the calculator works soon so it should all be clear soon .

Very nice

Any particular reason why you didn't use the new Repeaters as opposed to the old way of continuing a long signal?