// program done on 31/01/2024 by AMALJITH A
// implement a D flip flop with input D (slide switch) and outputs as Q and Q_Not


const int D_pin = 2;  // D input connected to digital pin 2 (slide switch)
const int Q_ledpin = 4;  // Q output connected to LED, digital pin 4
const int Q_Notledpin = 5;  // ~Q output connected to LED, digital pin 5

bool D = 0;  // Initial value for D
bool QNext = 0;  // setting ~Qnext state is initially low

void setup() {   // assigning the inputs and outputs to the selected pins
  pinMode(D_pin, INPUT);
  pinMode(Q_ledpin, OUTPUT);
  pinMode(Q_Notledpin, OUTPUT);
}

void loop() {
  //read input of switch state 
  D = digitalRead(D_pin);

  // Output conditions based on D flipflop characteristic equation Qn+1 =D
  QNext = D;

  // Update output LEDs
  digitalWrite(Q_ledpin, QNext);
  digitalWrite(Q_Notledpin, !QNext);

  delay(100);
}