51单片机,公式怎么实现流水灯?答:mov r2,#07h ;再往回循环。loop1: rrc a ;带进位右移 mov p1,a ;输出到P1口。call delay ;延时一段时间 djnz r2,loop1 ;反复循环 jmp start ;重新开始 delay: mov r3,#20 ;延时子程序 d1: mov r4,#20 d2: mov r5,#248 djnz r5,djnz r4,d2 djnz r3,d1 ret end ...
51单片机8路流水灯! 用三个按键控制三个程序!每个按键对应一个程序...答:include<reg51.h> define uchar unsigned char sbit key1=P1^0;sbit key2=P1^1;sbit key3=P1^2;uchar led1[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};uchar led2[]={0xe7,0xdb,0xbd,0x7e};bit flag;void delay(uchar a){ uchar i;while(a--)for(i=0;i<120;i++)...