void init_timer()
{
  volatile char *Timer1_TCCR1A;
  Timer1_TCCR1A=0x80;
  volatile char *Timer1_TCCR1B;
  Timer1_TCCR1B=0x81;  
  volatile char *Timer1_TCNT1H;
  Timer1_TCNT1H=0x85;
  volatile char *Timer1_TCNT1L;
  Timer1_TCNT1L=0x84;

    *Timer1_TCCR1A=0x00;
    *Timer1_TCCR1B=0X03;
    *Timer1_TCNT1H=0xFA;
    *Timer1_TCNT1L=0x1E;  
}

void h_w_delay(int a)
{
  volatile int i=0;
for(i=0;i<=a;i++)
{
    init_timer();
    volatile char *Timer1_TIFR1;
    Timer1_TIFR1=0x36;
    while((*Timer1_TIFR1&0X01)==0X00);
    *Timer1_TIFR1 |= 0x00;  // Clear overflow flag
}
}
void setup() {
  // put your setup code here, to run once:
  volatile char *dir1,*dir2;
  dir1=0x30;
  dir2=0x107;
  *dir1=0xFF;
  *dir2=0xFF;
}

void loop() {
  // put your main code here, to run repeatedly:
  volatile char *output1,*output2;
  volatile long i,j,k,l,m;
  output1=0x31;
  output2=0x108;
  volatile char num[10]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x67};
  //Serial.begin(9600);
  for(i=0;i<10;i++)
  {
    for(j=0;j<10;j++)
    {
      for(k=0;k<10;k++)
      {
        for(l=0;l<10;l++)
        {
             *output2=0x0E;
             *output1=num[i];
              //Serial.println(i);


               h_w_delay(4);
                            *output1=0x00;
             *output2=0x0D;
             *output1=num[j];
             //  Serial.println(j);
               h_w_delay(4);
                 *output1=0x00;
             *output2=0x0B;
             *output1=num[k];
                  //   Serial.println(k);
               h_w_delay(4);
                 *output1=0x00;
             *output2=0x07;
             *output1=num[l];
                //          Serial.println(l);
               h_w_delay(4);
                 *output1=0x00;

      }
    }
  }
}
}