#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() {
  lcd.begin(16, 2);
  lcd.print("Tanhaoze NO.077095");
}

void loop() {
  lcd.setCursor(0, 1);
  lcd.print(millis() / 1000);  // millis函数: 从程序运行开始到此时间点的时长(ms)
}