int ledPin1 = 12; // Pin for LED 1
int ledPin2 = 11; // Pin for LED 2

void setup() {
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  Serial.begin(9600);
  Serial.println("Enter:");
}

void loop() {

  char command = Serial.read();
  if (command == 'A' || command == 'a') {
    digitalWrite(ledPin1, HIGH); // Turn on LED 1
    Serial.println("Press A:LED1 ON");
  } 
  else if (command == 'X' || command == 'x') {
    digitalWrite(ledPin1, LOW); // Turn off LED 1
    Serial.println("Press X:LED1 OFF");
  } 
  else if (command == 'B' || command == 'b') {
    digitalWrite(ledPin2, HIGH); // Turn on LED 2
    Serial.println("Press B:LED2 ON");
  } 
  else if (command == 'Y' || command == 'y') {
    digitalWrite(ledPin2, LOW); // Turn off LED 2
    Serial.println("Press Y:LED2 OFF");
  }
}