#include <LiquidCrystal.h>

// set constants to screen dimensions:
const int numRows = 2;
const int numCols = 16;

//specify which Arduino I/O pins = RS,RW,E,DB4,DB5,DB6,DB7
LiquidCrystal lcd(2, 3, 4, 9, 10, 11, 12);

void setup()
{
   // set up the LCD's number of columns and rows: 
  lcd.begin(numCols,numRows);//specify screen dimensions
  lcd.clear();//clear the screen
  lcd.setCursor(0,0); // set cursor to col 0 row 0
  lcd.print("Wait a second");// print from cursor location
  delay(1000); // wait 1 second
  lcd.setCursor(0,0); // set cursor to col 0 row 0
  lcd.print("1st Hello World!");// print from cursor location
  delay(1000); // wait 1 second
  lcd.setCursor(0,1); // set cursor to col 0 row 1
  lcd.print("2nd Hello World!");// print on row 1
  
}

void loop() {}