int ledpin = 8; 
int ledkuning = 9;
int ledhijau = 10; 


void setup () {
  
  pinMode(ledpin, OUTPUT); 
  pinMode(ledkuning, OUTPUT); 
  pinMode(ledhijau, OUTPUT); 
}


void loop() {
  
  digitalWrite(ledpin, HIGH); 
  delay(1000); 

  digitalWrite(ledpin, LOW); 
  delay(1000); 

  digitalWrite(ledkuning, HIGH); 
  delay(1000); 

  digitalWrite(ledkuning, LOW); 
  delay(1000); 

  digitalWrite(ledhijau, HIGH); 
  delay(1000); 

  digitalWrite(ledhijau, LOW); 
  delay(1000); 
}