100% working redstone computer. It is an 8 bit computer (1-128 in binary). It has installed a demo program (addition). The computer has 2 outputs (for desplay, or controlling other redstone devices). The RAM has 4 cells of memory. It is 100% reprogrammable, because of the red part (program memory). I have put up a binary display to make it easier to understand the computer :) Good luck!