#include <LiquidCrystal.h>
LiquidCrystal lcd(23,22,19,18,5,17);
String x;

void setup() {
 lcd.begin(16,2);
 pinMode(13,OUTPUT);
 Serial.begin(9600);
 Serial.println("Enter the Input :");
}

void loop() {
if(Serial.available()>0)
{
  x=Serial.readStringUntil( '\n');
  lcd.setCursor(0,0);
  if(x =="ON")
  {
    digitalWrite(13,HIGH);
    lcd.print("LED ON");
  }

else if(x =="OFF")
{
  digitalWrite(13,LOW);
  lcd.print("LCD OFF");
}
}
}