#include <LiquidCrystal.h>
LiquidCrystal lcd(11,10,4,5,6,7);


void setup() {
  // put your setup code here, to run once:
    lcd.begin(16,2);
}

void loop() {
  // put your main code here, to run repeatedly:
    lcd.print("Hello world");
    delay(1000);
    lcd.clear();
}