DLR2416 is a four-digit 5x7 dot matrix display module with a built-in CMOS integrated circuit. This display is X/Y stackable. The integrated circuit contains memory, ASCII ROM decoder, multiplexing circuitry and drivers. Data entry is asynchronous and can be random. A display system can be built using any number of DLR2416s since each digit can be addressed independently and will continue to display until the next data entry.