单片机程序，用单片机的蜂鸣器来实现电子琴功能-SCM procedures, using SCM to achieve buzzer organ function

简单的电子琴程序，利用51单片机装入该程序即可使用。几首简单儿歌-Simple piano program, the use of 51 single-chip loading, the program can use. A few simple nursery rhymes