普中A2关于数码管轮播8

代码如下：

#include "reg52.h"
 typedef unsigned int u16;
 typedef unsigned int u8;
 sbit LSA=P2^2;
 sbit LSB=P2^3;
 sbit LSC=P2^4;
 void delay(u16 i){
    
    
 	 while(i--);
 }
 void Led(){
    
    
 	 u8 i;
	 for (i=0;i<8;i++){
    
    
	 delay(2000);
	 	P0=0xff;
	 	  switch(i){
    
    
		    case(0):
			  LSA=1;LSB=1;LSC=1; break;
			case(1):
			  LSA=0;LSB=1;LSC=1; break;
			case(2):
			  LSA=1;LSB=0;LSC=1; break;
			case(3):
			  LSA=0;LSB=0;LSC=1; break;
			case(4):
			  LSA=1;LSB=1;LSC=0; break;
			case(5):
			  LSA=0;LSB=1;LSC=0; break;
			case(6):
			  LSA=1;LSB=0;LSC=0; break;
			case(7):
			  LSA=0;LSB=0;LSC=0; break;
		  } 
		 delay(3000);
		 P0=0x00;
		 
	 }
 
 }
 void main(){
    
    
 	   while(1){
    
    
	   	 Led();
	   }
 	   
 }