#include <reg52.h>

#include<instrins.h>

#define uchar unsigned char

#define uint  unsigned int

uchar code led[]={0xfe,0xfb,0xfd ,0xf7,0xef,0xbf,0xdf,0x7f};

delay(uint z)

{

   uint x,y;

   for(x=z;x>0;x--)

      for(y=110;y>0;y--);

}

main( )

{

   uint i;

   while(1)

   {

   P2=led[];

   delay(500);

   _crol_(led,1);

   }

}