#include <LiquidCrystal.h>

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;

LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

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

  lcd.print("hello, world!");
 

}

void loop() {
  // put your main code here, to run repeatedly:
  lcd.noDisplay();
  delay(500);

  lcd.display();
  delay(500);


}