#include "reg51.h"
#include "intrins.h"
#define uchar unsigned char
#define uint unsigned int

//ÑÓʱ³ÌÐò 
void mDelay(unsigned int Delay)
  { unsigned int i;
    for(;Delay>0;Delay--)
      { for(i=0;i<124;i++)
          {;}
      }
   }

void main()
  { unsigned char OutData=0xfe;
    for(;;)
      {
        P1=OutData;
        OutData=_crol_(OutData,1); //Ñ­»·×óÒÆ
        mDelay(1000); /*ÑÓʱ1000ºÁÃë*/
      }
}