#include <reg51.H> 
unsigned char code taba[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; 
unsigned char code tabb[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; 

void delay1(void) 

{
  unsigned char i,j,k; 
  for(k=10;k>0;k--) 
  for(i=20;i>0;i--) 
  for(j=248;j>0;j--); 

} 

 /*************************
 從左到右平滑移動三次，其次從右到左平滑移動三次，再次從上到下平滑移動三次