#include  
#define T 24055
void Delay1(void);//high voltage
void Delay2(void);//low voltage
//void Delay(void);    code unsigned int high_time[]={1382,1473,1555,1636,1718,1800,1882,1964,2054,2120};
unsigned char i; 
main()
{
  unsigned char j;
  TMOD=0x10;
  i=0;
  while(1)
  {
    if(i<=10)
    {
      for(j=0;j<2;j  )
      {
        P1_0=1;
        Delay1();
        P1_0=0;
        Delay2();
      }
      i  ;
      
    }
    if(i>10)
      i=0;  
  }  
}
void Delay1()        
{
  TL1=65536-(high_time[i]-15);
  TH1=(65536-(high_time[i]-15))>>8;
  TR1=1;
  while(TF1==0);
  TF1=0;
  TR1=0;
}    void Delay2()
{
  TL1=(65536-(T-high_time[i]-15));
  TH1=(65536-(T-high_time[i]-15))>>8;
  TR1=1;
  while(TF1==0);
  TF1=0;
  TR1=0;
}