/*************************************************************************
                                   8個LED流水燈實驗
**************************************************************************/
#include"reg51.h"
#define uint unsigned int
#define uchar unsigned char
const tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
void delay(void)    //延時
{
      uint i;
	       for(i=0;i<35530;i++);
}
void main(void)
{      uchar x;
         while(1)            
         {       for(x=0;x<8;x++)
		              {   P0=tab[x];
					      delay();}
         }
}