The eMARC is a redstone computer. It can add 3-bit numbers (for all you non computer geeks out there, numbers from 0-7.) It can also display pictures on the screen. It has 4 picture slots on it, and in the world download all of them have images. You can make your own images in it, also. You just have to fly back in the wiring! This computer took a long time to build, and it was my 1st computer. Feedback is appreciated!