const int inputA = 12;
const int inputB = 13;

const int pinAND  = 7;
const int pinOR   = 4;
const int pinNAND = 6;
const int pinNOR  = 5;

void setup() {
  pinMode(inputA, INPUT_PULLUP);
  pinMode(inputB, INPUT_PULLUP);

  pinMode(pinAND, OUTPUT);
  pinMode(pinOR, OUTPUT);
  pinMode(pinNAND, OUTPUT);
  pinMode(pinNOR, OUTPUT);
}

void loop() {
  bool A = (digitalRead(inputA) == LOW);
  bool B = (digitalRead(inputB) == LOW);

  digitalWrite(pinAND,  (A && B)  ? HIGH : LOW);
  digitalWrite(pinOR,   (A || B)  ? HIGH : LOW);
  digitalWrite(pinNAND, (!(A && B)) ? HIGH : LOW);
  digitalWrite(pinNOR,  (!(A || B)) ? HIGH : LOW);
}