include <LiquidCrystal_I2C.h> 

LiquidCrystal_I2C lcd(0x27,16,2)
int timer = 0;

void setup() {
  lcd.init();
  lcd.clier();        
  lcd.backlight();
}

void loop() {
  lcd.setCursor(0,0);
  lcd.print("Timer in second:");
  lcd.setCursor(0,1);
  lcd.print(Timer);
  timer = Timer + 1;
  dela(1000);
}