frequency+=100;
if(frequency>108500) //频率如果大于108.5MHz frequency=87500;
search();
desplay(frequency/100); //调用显示
//频率设定为87.5MHz
} if(!KEY2) {
delays(250); //延时消抖 frequency-=100; if(frequency<87500)
//频率如果小于87.5MHz
//手动设臵频率,-0.1MHz;
frequency=108500; //频率设定为108.5MHz
search();
desplay(frequency/100); //调用显示
}
desplay(frequency/100); //调用显示 } }
30
附录B
收音机PCB布线图
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