void setup() {
  // put your setup code here, to run once:
DDRD=B11111111;
}

 void loop()
 /* {
  // put your main code here, to run repeatedly:
  //berjalan satu led
PORTD=B10000000;
delay (100);
PORTD=B01000000;
delay (100);
PORTD=B00100000;
delay(100);
PORTD=B00010000;
delay (100);
PORTD=B00001000;
delay(100);
PORTD=B00000100;
delay(100);
PORTD=B00000010;
delay(100);
PORTD=B00000001;
delay(100);
}
*/
 /*
{
  //kelap kelip
PORTD=B11111111;
delay(500);
PORTD=B00000000;
delay(500);
}
*/
/*
 {
  //ganjil genap
  PORTD = B10101010;
  delay(500); 

  PORTD = B01010101;
  delay(500);
}
*/
/*
{
  //flip flop kanan kiri
PORTD=B11100000;
delay (300);
PORTD=B00011100;
delay (300);
}
*/
/*
{
  //tubrukan lalu kembali lagi
PORTD=B10000100;
delay (300);
PORTD=B01001000;
delay (300);
PORTD=B00110000;
delay (300);
PORTD=B01001000;
delay (300);
PORTD=B10000100;
delay (300);
}
*/
/*
{//berjalan
  //
PORTD=B00000000;
delay (300);
PORTD=B10000000;
delay (300);
PORTD=B11000000;
delay (300);
PORTD=B11100000;
delay (300);
PORTD=B11110000;
delay (300);
PORTD=B11111000;
delay (300);
PORTD=B11111100;
delay (300);
}
*/
/*
{
  //traffic light
PORTD=B10000100;
delay (3000);
PORTD=B01000100;
delay (3000);
PORTD=B00110000;
delay (3000);
PORTD=B00101000;
delay (3000);
}
*/