#define ledPin 2
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);

//DISPLAY WHILE BLINKING

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.setCursor(1, 0);
  lcd.print("Hello, CS110!");
  pinMode(ledPin, OUTPUT);
}

void loop() {
  lcd.setCursor(7, 1);
  lcd.print(millis() / 1000);
  delay(500);
  digitalWrite(ledPin, HIGH);
  delay(500);
  digitalWrite(ledPin, LOW);
  delay(500);
}