说明：  1100011001的非归零码、曼彻斯特编码、差分曼彻斯特编码、调幅（ASK）、调频（FSK）和调相（PSK）的编码波形示意图
(1100011001 of the NRZ, Manchester encoding, differential Manchester encoding, AM (ASK), frequency modulation (FSK) and phase modulation (PSK) waveform diagram of the coding)