vb应用数据库进行存储实时数据，并用控件画出实时曲线-vb database application to store real-time data, and draw real-time control curve

本代码主要是一个CChart图表控件的使用，该图表曲线显示很方便，通用性很好。-CChart is a powerful plotting tool for 2D & 3D data visulization in C++ interface, with interaction of mouse and keyboard. Please read the file Document\Userguide.chm for detailed infomation. The VC6 proj