//This is the LCD control program. This code is used to control 2 16x2 LCD displays simultaneously.

#include<LiquidCrystal.h>
String data;
String LCD;

LiquidCrystal lcd1(2,3,4,5,6,7);  //RS, EN, D4, D5, D6, D7
LiquidCrystal lcd2(8,9,10,11,12,13);
void setup()
{
    Serial.begin(9600);
    lcd1.begin(16,2);
    lcd2.begin(16,2);
    lcd1.setCursor(0,0);
    lcd2.setCursor(0,0);
    lcd1.print("Hello");
    lcd2.print("World");
    lcd1.clear();
    lcd2.clear();
    delay(2000);
}

void loop()
{
    Serial.println("Enter the LCD you wish to display data in: ");
    while (Serial.available()==0) {
    }
    LCD = Serial.readString();
    Serial.print("The chosen LCD is = ");
    Serial.println(LCD);
    
    Serial.print("Enter the data you wish to display: ");
    while (Serial.available()==0) {
    }
    data = Serial.readString();
    Serial.println("The data is =");
    Serial.println(data);
    
    if(LCD == "1")
    {
      lcd1.clear();
      lcd1.print(data);
      LCD = '0';
    }
    else if(LCD == '2')
    {
      lcd2.clear();
      lcd2.print(data);
      LCD = '0';
    }
    delay(1000);
}