用ATmega16实现的多功能带音乐闹铃（老鼠爱大米）的数字时钟，有3个功能键设置。具体功能为：秒表计时，闹铃音乐，时钟，校时设置。可以学习状态机的编程思想。-ATmega16 achieve with the music with multi-function alarm (Lao Shu Ai Da Mi) digital clock, There are three function keys installed. Specific functions : stopwatch time, the alarm music, the clock, setting up schools. State machine learning programming ideas.