The utility model discloses a digital control electron tone system, including singlechip, broadcast module, keyboard and piece external memory, the singlechip includes a plurality of inputoutput interface, the broadcast module is connected on an inputoutput interface, each button of keyboard corresponds respectively to be connected on an inputoutput interface, is used for controlling singlechip work, the piece external memory with the singlechip is connected for the scale information of storage melody, the singlechip is according to the follow corresponding frequency signal is exported extremely to the different scales that acquire among the piece external memory the broadcast module.