AT89S52的万年历程序源码，12864显示，除正常时钟外还有具有报时，闹钟，日历，电子书，定时等功能，自己写的，-AT89S52 source of the calendar program, 12864 showed that, in addition to normal with time but also have a clock, alarm clock, calendar, e-books, and other functions from time to time, wrote