#define ledMerah 5
#define ledKuning 4
#define ledHijau 2
#define ledBiru 1
void setup() {
  // put your setup code here, to run once:
pinMode (ledMerah,OUTPUT );
pinMode (ledKuning,OUTPUT);
pinMode (ledHijau,OUTPUT );
pinMode(ledBiru,OUTPUT ) ;
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(ledMerah,HIGH );
digitalWrite(ledKuning,HIGH);
digitalWrite(ledHijau,HIGH);
digitalWrite(ledBiru,HIGH);
delay(1000) ;
digitalWrite(ledMerah, LOW);
digitalWrite(ledKuning, LOW);
digitalWrite(ledHijau, LOW);
digitalWrite(ledBiru, LOW);
delay(2000);
}