# include, sbit LED =, P0 ^ 0;, sbit ADDR0 =, P1 ^ 0;, sbit ADDR1 =, P1 ^ 1;, sbit ADDR2 =, P1 ^ 2;, sbit ADDR3 =, P1 ^ 3;, sbit ENLED =, P1 ^ 4,, void 主要(){,//void 即函数类型,//以下为声明语句局部,unsigned int 小姐:=,0;,//界说一个无符号整型变量,我,并赋初值,0,//以下为履行语句局部,ENLED =, 0;,//U3, U4 两片,74 hc138 总使能,ADDR3 =, 1,,//使能,U3 使之正常输入,ADDR2 =, 1,,//经,U3 的,Y6 输入开启三极管,Q16 ADDR1 =, 1;, ADDR0 =, 0;, while (1) {, LED =, 0;,//点亮小灯,for (i=0;, i<30000;,我+ +);,//延时一段工夫,LED =, 1,,//熄灭小灯,for (i=0;, i<30000;,我+ +);,//延时一段工夫,},}
