int a = 2;
int b = 3;
int c = 4;
int d = 5;
int e = 6;
int f = 7;
int g = 8;
String input = "";

void setup() {
 Serial.begin(9600);
}

void loop() {
  Serial.println("Masukkan Angka :");
  if (Serial.available() > 0){
    input = Serial.readStringUntil('\n');
    input.trim();

    if (input == '0'){
      digitalWrite(a, 1);
      digitalWrite(b, 1);
      digitalWrite(c, 1);
      digitalWrite(d, 1);
      digitalWrite(e, 1);
      digitalWrite(f, 1);
    }
    else if (input == '1') {
      digitalWrite(b, 1);
      digitalWrite(c, 1);
    }
    else{
      Serial.print("");
  
    }
    Serial.println("");

  }
  Serial.println("Masukkan Angka :");
  delay(100);






}