#include <LiquidCrystal.h>

LiquidCrystal lcd(12,11,10,9,8,7);

void setup() {
  // put your setup code here, to run once:
  pinMode(2, INPUT_PULLUP);
  lcd.begin(16,2); //hace el conteo
  lcd.print("Clase Microcontroladores");

}

void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(2)==HIGH)
  {

  lcd.display();
  lcd.setCursor(0,1);
  lcd.print("Segundos ");
  lcd.print(millis()/1000);

  }
  else{

    lcd.noDisplay();
    
  }

}