#include <LiquidCrystal.h>
LiquidCrystal lcd (7,6,5,4,3,2);

int button= 9;
int flag;
int count;
int L1=13;

void setup(){
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("  MCA LAB  ");
delay(2000);
lcd.clear();
pinMode(button, INPUT);
pinMode(L1, OUTPUT); 
}

void loop(){
flag= digitalRead(button);
if(flag == 1){
count++;
delay(300);

if(count==1){
  digitalWrite(L1, HIGH);
  lcd.setCursor(0,1);
  lcd.print("ON");
  delay(3000);
  lcd.clear();
}
if(count==2){
digitalWrite(L1, LOW);
lcd.setCursor(0,1);
lcd.print("OFF");
delay(3000);
lcd.clear();
count=0;
}
}
}