void setup() {
 DDRD=B11111100;
 DDRB=B11111111;
 PORTD=B00000001; //pinMode(0, INPUT_PULLUP);
 }
void loop() {


 //Tugas 3. Program 3 Persimpangan

 {
 PORTB=B00001100; PORTD=B00100100; //1
  delay(5000);
 PORTB=B00010010; PORTD=B01000100; //2
  delay(1000);
  PORTB=B00100001; PORTD=B10000100; //3
  delay(5000);
  PORTB=B00010001; PORTD=B01001000; //4
  delay(1000);
  PORTB=B00001001; PORTD=B00110000; //5
  delay(5000);
  PORTB=B00001010; PORTD=B00101000; //6
  delay(1000);
 } 

 }