实时数据绘制，比较简单的操作，实现串口数据曲线绘制-Real-time data mapping, a relatively simple operation, to achieve serial data curve drawing

基于mfc的绘图程序，实时监视串口，动态显示曲线，对于初学者很有帮助-Mfc-based drawing program, serial real-time monitoring, dynamic display curve for beginners