通过控制单片机内部的定时器来产生不同频率的方波，驱动喇叭发出不同音调的音乐，再利用延迟来控制发音时间的长短。把乐谱转化成相应的定时常数就可以从发音设备中演奏出悦耳动听的音乐。对于不同型号的单片机只需要相应的改变一下地址即可。-Single-chip by controlling the internal timer to generate a square wave of different frequencies, different tone horn-driven music, re-use the delay to control the length of pronunciation. The scores from time to time into the corresponding constant can be played from the sound equipment out of enchanting music. For different models of single-chip only need to change the corresponding address.