Windows CE下2D图形（曲线表格）的绘制，基于GDI。-2D graphics under Windows CE (curve form) of the mapping, based on the GDI.

接受串口数据显示、绘制实时曲线，也可自动依照随机数据绘制曲线，并且可以将数据保存为EXCEL格式，本程序采用两种方法保存两个表格，其中一个是完全正常的，另外一个功能还不完善。-Receiving serial data, real-time curve drawing, random data can be automatically drawn in accordance with the curve, and the data can be saved as EXCEL format, th