#include <LiquidCrystal.h>
const int numRows = 2;
const int  numCols = 20;
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
void setup()
{
  lcd.begin(20, 2);
  lcd.print("hello, world!");
}
void loop()
{
  lcd.setCursor(0, 2);
  lcd.print(millis() / 1000);
}