const int tombol1 = 2;
  const int tombol2 = 3;
  const int tombol3 = 4;
  const int tombol4 = 5;
  const int lampu1 = 8;
  const int lampu2 = 9;
  const int lampu3 = 10;
  const int lampu4 = 11;

void setup() {
 pinMode(tombol1, INPUT);
 pinMode(tombol2, INPUT);
 pinMode(tombol3, INPUT);
 pinMode(tombol4, INPUT);
 pinMode(lampu1, OUTPUT);
 pinMode(lampu2, OUTPUT);
 pinMode(lampu3, OUTPUT);
 pinMode(lampu4, OUTPUT);

 digitalWrite(tombol1, HIGH);
 digitalWrite(tombol2, HIGH);
 digitalWrite(tombol3, HIGH);
 digitalWrite(tombol4, HIGH);

}
  
void loop() {
  if(digitalRead(tombol1)==LOW){
    digitalWrite(lampu1, HIGH);
  }else{
    digitalWrite(lampu1, LOW);
  }
  if(digitalRead(tombol2)==LOW){
    digitalWrite(lampu2, HIGH);
  }else{
    digitalWrite(lampu2, LOW);
  }
  if(digitalRead(tombol3)==LOW){
    digitalWrite(lampu3, HIGH);
  }else{
    digitalWrite(lampu3, LOW);
  }
  if(digitalRead(tombol4)==LOW){
    digitalWrite(lampu4, HIGH);
  }else{
    digitalWrite(lampu4, LOW);
  }
}