基于QT4 QGrapicView的串口虚拟示波器，功能和界面模仿Serial_Digital_Scope V2，窗口大小可变，可显示波形已实现鼠标拖动和滚轮缩放。-Based on QT4 QGrapicView serial virtual oscilloscope, function and interface mimics Serial_Digital_Scope V2, variable size window that displays the waveform has been a