关于51单片机的外部中断使用方法答:代码如下:include define uchar unsigned char sbit led=P1^0;uchar code duan[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};uchar code wei[3]={0x06,0x05,0x03};void delay(uchar c);void ini_()//初始化函数,设置中断触发方式,开中断 { EA=1;IT0=0;EX0=1;...