说明：  看到有朋友需要这样的程序，包括串口接收并波形显示，并存储，以及回放功能，所以顺便做了一个，希望对大家有用！
(See friends need for such a program, including the serial receive and waveform display, and storage, and playback capabilities, so the way to do one, and I hope useful!)