void setup() {
  // put your setup code here, to run once:
  volatile char *dirf, *dirk;
  dirf = 0x30; dirk = 0x107;
  *dirf = 0xFF; *dirk = 0x00;
  volatile char *outf, *ink, x, count=0;
  outf = 0x31; ink = 0x106;
  
  *outf = 0x3F;
  while(1)
  {
  x = *ink;
  if((x & 0x01)==0x01)
  {
    count=count+1;
    if(count>9)
    {
      count=0;
    }
    switch(count)
    {
      case 0:
      *outf = 0x3F;
      break;
      case 1:
      *outf = 0x06;
      break;
      case 2:
      *outf = 0x5B;
      break;
      case 3:
      *outf = 0x4F;
      break;
      case 4:
      *outf = 0x66;
      break;
      case 5:
      *outf = 0x6D;
      break;
      case 6:
      *outf = 0x7D;
      break;
      case 7:
      *outf = 0x07;
      break;
      case 8:
      *outf = 0x07F;
      break;
      case 9:
      *outf = 0x6F;
      break;
    }
    
    delay(1000);
  }
  }
}

void loop() {
  // put your main code here, to run repeatedly:
  
}