用12864液晶写的时钟万年历，代节气显示哦-12864 Writing with LCD calendar clock, show Oh on behalf of Terms

1602液晶时钟，初试时间日期自动显示，可以设定时间，日期。-1602 LCD clock, first test time and date automatically, can set the time and date.

Keli3开发平台 AT89C52单片机 C语言 1602液晶显示 基本电子表功能 定时功能 DS1302实时时钟-Keli3 development platform AT89C52 single chip microcomputer C 1602 liquid crystal display the basic functions of electronic timing DS1302 real-time clock