用atmega16做的万年历,使用内部时钟,三个按键,四个数码管显示,可查询年、月、日、时、分、秒。可自由设置时间。在本人自己的板子上，一天相差不到10秒-Atmega16 to do with the calendar, using the internal clock, three buttons, 4 digital LED display that provides access year, month, day, hour, minute, seconds. Be free to set the time. In my own board, the day was less than 10 seconds