七段式数码管的模拟控件，VC++开发。可以直接在其他项目中使用-Seven-segment LED analog control, VC++ development. Can be directly used in other projects

配套李英的《VC++编程与项目开发》的ActiveX控件实例代码，适合初学者入门VC++编程-Supporting Li Ying s "VC++ programming and project development," the ActiveX control instance code for beginner VC++ Programming