The LED matrix is a colorful display that you can control using the codeBit. Set it to SERIAL mode to program your own graphics, or switch it to SIGNAL mode to play with the five preset programs we engineered to get you playing with this Bit right out of the box. The case around each LED matrix features helpful dimples and magnets, which come in handy when using multiple matrices .The dimples help you position the displays correctly, and the magnets keep them from separating. Snap the cases together when they’re in the correct position, and push apart when they’re not – like the Bits themselves!