51单片机C语言开发之花样流水灯程序

#include <reg52.h>typedef unsigned char uchar;typedef unsigned int uint; //int是16位的sbit ADDR0 = P1^0;sbit ADDR1 = P1^1;sbit ADDR2 = P1^2;sbit ADDR3 = P1^3;sbit ENLED = P1^4;void main(){    uchar i;    uint j;    ENLED = 0;    ADDR3 = 1;    ADDR2 = 1;    ADDR1 = 1;    ADDR0 = 0;    while(1){        for(i=0; i<=7; i++){            P0 = ~(0x01 << i);            for(j=0; j<20000; j++) ;        }        for(i=6; i>=1; i--){            P0 = ~(0x01 << i);            for(j=0; j<20000; j++) ;        }    }}