// Program done on 2/02/2024 by Amaljith A
// Implement an SR flip-flop with inputs as S and R, outputs as Q and Q_Not.

const int switchSPin = 2;  // Slide switch for Set (S)
const int switchRPin = 3;  // Slide switch for Reset (R)
const int ledQPin = 4;     // LED for Q output
const int ledQNotPin = 5;  // LED for Q' (complement of Q) output

// Variables to store current and next state
bool Q = 0;       // Current state of Q = Qn
bool Q_Not = 0;   // Current state of Q_Not = (Qn+1)
bool S, R;        //variables to store Inputs S and R

void setup() {
  // Set pins of switch and LED's as inputs or outputs
  pinMode(switchSPin, INPUT);
  pinMode(switchRPin, INPUT);
  pinMode(ledQPin, OUTPUT);
  pinMode(ledQNotPin, OUTPUT);
}

void loop() {
  // Read the state of the switches
  S = digitalRead(switchSPin);
  R = digitalRead(switchRPin);

  // output based on the characteristic equation for SR flipflop
  Q = S + (Q * !R);
  Q_Not = R + (!Q * !S);

  // Update the LEDs
  digitalWrite(ledQPin, Q);
  digitalWrite(ledQNotPin, Q_Not);

  // Add a small delay for stability
  delay(100);
}