对数字式电子时钟的模拟，实现对系统时间的显示，采用内存DC作图的方式，防止显示时间的闪烁，对学习VC下面的基础图像编程很有帮助。-Of digital electronic clock simulation, the realization of time on the system showed that the use of memory DC mapping the way to prevent the display flashes of time learning the basis