带实时曲线显示的一个上位机程序，可以查看相关控件的使用-With real-time curve shows a host computer program, you can view the use of related controls

之前用来进行串口通信读取下位机传送的压力值，并用Zedgraph控件作实时曲线显示。-Serial communication to read pressure value hardware,and show it with Zedgraph simutanously.