51单片机控制DAC0832产生正弦波,如何用定时器改变频率,求代码!_百度...答:下面的程序是使用定时器改变幅值的,你要是确定是定时器改变频率的话,把具体的要求贴出来 include <reg51.h> unsigned int i;code unsigned char Sin[128]={ 64,67,70,73,76,79,82,85,88,91,94,96,99,102,104,106,109,111,113,115,117,118,120,121,123,124,125,126,126,127,127,...