#include <LiquidCrystal.h>

int Contrast = 145;
int a = 0;
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup()
{
  analogWrite(6, Contrast);
  lcd.begin(16, 2);
   pinMode(7, OUTPUT); 
   pinMode(8, INPUT_PULLUP);
}

void loop()
{

  if (a == HIGH)
  {
    digitalWrite(7, HIGH);
    lcd.print("lampu on");
  }
  else
  {
    digitalWrite(7, LOW);
    lcd.print("lampu off");
  }

}