void setup() {
  // put your setup code here, to run once:
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(10, OUTPUT);

 pinMode(9, INPUT);
  pinMode(8, INPUT);
  pinMode(7, INPUT);
  pinMode(6, INPUT);

  Serial.begin (9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(13, 1);
  digitalWrite(12, 1);
  digitalWrite(11, 1);

  if (digitalRead(9) == 1 ){
    Serial.println( "Presionaste el 1");
  }

  if (digitalRead(8) == 1 ){
    Serial.println( "Presionaste el 2");
  }

  if (digitalRead(7) == 1 ){
    Serial.println( "Presionaste el 3");
     }

  

  }