void setup() {
  volatile char *Dir_F;    //port F
  Dir_F=0X30;
  *Dir_F=0XFF;

  volatile char *Dir_K;
  Dir_K=0X107;              //PORT K
  *Dir_K=0XFF;
}

void loop() 
{
  volatile char *output_F;
   output_F=0X31;       //PORT F
   *output_F=0X4F;

   volatile char *output_K;
   output_K=0X108;      //PORT K
   *output_K=0XFD;

}