>get bored
>make a small adder with a display out or redstone over the course of a few hours
As of now, it only has a half adder. Meaning it can only calculate up to 2. so 1+1, and 1+0. It's not much, but it's something. as soon as this guy on youtube uploads a more indepth tutorial on full adders, i'll be modifying it to calculate up to 9