51单片机控制的，电子时钟，万年历，可以显示年月日时分秒、星期、时间日期设置、闹钟设置、并且带有proteus仿真图和c程序。ds1302、lcd1602、蜂鸣器等零件。-51 single-chip control, electronic clock, calendar, you can display the month, day, every minute, day of the week, the date and time settings, alarm settings, and w