qt设计便携式心电仪界面的时候，需要的心电信号产生程序。-qt interface design portable ECG apparatus when needed ECG generator.

QWT是QT的第三方类库，按照此文档添加到QT后运用里面的控件画出坐标系，心电图波形等。-QT QWT is a third-party library, which added to the QT use the controls to draw the coordinate system, ECG waveforms.

利用QT读取单片机发送的串口数据，并实时显示心电波形图。子线程接收数据，主线程画图(Using QT to read the serial data sent by single chip microcomputer and display the ECG waveform in real time. Zi Xiancheng receives data, master thread drawing)