利用定时器产生不同频率的方法，组成乐谱由单片机进行信息处理，经过放大利用MCS-51单片机的P1.0口输出音乐。-Using the timer methods produce different frequencies, the score composed by the microcontroller to process information through the use of MCS-51 microcontroller amplification of P1.0 port outp