void setup()
{
  DDRB|=0x01;
  DDRD|=0X80;
}

void loop()
{
  PORTB|=0X01;
  PORTD&=~0X80;
  delay(1000); // Wait for 1000 millisecond(s)
  PORTB&=~0X01;
  PORTD|=0X80;
  delay(1000); // Wait for 1000 millisecond(s)
}