#include <LiquidCrystal.h>
LiquidCrystal Lcd(2,0,4,16,17,5);
int Led=12;
int Switch=14;
  void setup()
  {
    pinMode(Led, OUTPUT);
    pinMode(Switch, INPUT);
    Lcd.begin(16,2);
  }
  void loop()
  {
    int a;
    a=digitalRead(Switch);
    if(a==1)
    {
      digitalWrite(Led, HIGH);
      digitalWrite(Led, LOW);
    }
    else
    {
      Lcd.clear();
      Lcd.setCursor(0,0);
      Lcd.print("123456789");
      delay(1000);
    }
  }