*主要功能：ds1302和12864（st7920)组成的时钟读取和 * 显示，可显示时间、日期和星期。 *续:可在此基础上加入按键调整时间和农历显示-* Main features: ds1302 and 12864 (st7920) composed of the clock reading and* display, can display time, date and week.* Added: You can adjust this time based on the join