Logic Gate Implementation

Solving Approach

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Code

/*Paste your code here*/
// Define the input pins for the two switches
const int inputA_pin = 2;
const int inputB_pin = 3;

// Define the output pins for the four LEDs
const int or_led_pin = 8;
const int and_led_pin = 9;
const int nand_led_pin = 10;
const int nor_led_pin = 11;

void setup() {
  // Set the input pins with internal pull-up resistors
  pinMode(inputA_pin, INPUT_PULLUP);
  pinMode(inputB_pin, INPUT_PULLUP);
  
  // Set the LED pins as outputs
  pinMode(or_led_pin, OUTPUT);
  pinMode(and_led_pin, OUTPUT);
  pinMode(nand_led_pin, OUTPUT);
  pinMode(nor_led_pin, OUTPUT);
}

void loop() {
  // Read the state of the buttons
  // A button press reads as LOW due to the internal pull-up resistor
  bool inputA = !digitalRead(inputA_pin); // Invert the logic for clarity
  bool inputB = !digitalRead(inputB_pin);

  // Implement the logic for each gate and set the LED outputs

  // OR Gate: True if input A OR input B is true
  digitalWrite(or_led_pin, inputA || inputB);

  // AND Gate: True if input A AND input B are both true
  digitalWrite(and_led_pin, inputA && inputB);
  
  // NAND Gate: The inverse of AND
  digitalWrite(nand_led_pin, !(inputA && inputB));
  
  // NOR Gate: The inverse of OR
  digitalWrite(nor_led_pin, !(inputA || inputB));
}

Output

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