编译时请将个头文件 添加在一起 ， 该程序实现 可调的电子钟，没有使用时钟芯片，对时分秒，年月日，星期 都可以调，还有掉电保护的功能，新手-Compile-time file with your head, the program to achieve adjustable electronic bell, do not use the clock chip, minutes and seconds of time, date, week, can be transferred, as we