单片机电子钟，用C语言开发。

设计制作一个电子钟并且能够显示日历，用LED数码管直接显示，能够通过按键调整时间、年月日，功能为按第一个键为Mode（模式）键，被调整的相应调整区域开始闪烁，第二个键（Add键）加一，第三个（Sub键）减一，中间的键（Add键）可以使时分秒和年月日相互切换。-MCU clock, using C language development. Designed an electronic clock and can display a calendar, with LED digital display directly, through buttons adjust the time, years on, press the function key for the first Mode (mode) key areas to be adjusted to adjust the flashes, the first Two button (Add button) plus a third (Sub key) minus one, the middle button (Add button) can make each day, hour, and the years to switch.