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左移流水灯

#include<reg52.h>
#include<intrins.h>

#define uint unsigned int
#define uchar unsigned char
uint temp;


  void delay()
  {
    uint i,y;
     for(i=0;i<300;i++)
       for(y=0;y<400;y++);
  }	


       void main()
	    {  
		temp=0xfe;
		P2=temp;
	   while(1)
	   {
	   	
		temp=_crol_(temp,1);
		P2=temp;
		delay();
	   
	   }

			 
	   
	
		
		
	         
		   
		
		}