说明：  stc系列的单片机跟at的不同，其中一个特点是具有掉电不可刷的flash，这个源码虽然短小，但是告诉你怎样使用内部的flash，小而实用
(stc series with the SCM at different One of the new features is not brush with power off the flash, the source Although short, But to tell you how to use internal flash, and small and practical)