//Configuration de pins
int regA1=13;
int regA0=12;

int regB1=7;
int regB0=6;

int regR1=3;
int regR0=2;

void setup() {
//Configuration de registres
//entrée registre A(2bits)
pinMode(regA1, INPUT_PULLUP);
pinMode(regA0, INPUT_PULLUP);

//entrée registre B(2bits)
pinMode(regB1, INPUT_PULLUP);
pinMode(regB0, INPUT_PULLUP);

//entrée registre R(2bits)
pinMode(regR1, OUTPUT);
pinMode(regR0, OUTPUT);

//Activation transmission Serial
  Serial.begin(9600);

}



void loop() {
  //Conversion de pins entrée A en entier sur deux bits
  int regA = (digitalRead(regA1) << 1) + (digitalRead(regA0) << 0);
  //Conversion de pins entrée B en entier sur deux bits
  int regB = (digitalRead(regB1) << 1) + (digitalRead(regB0) << 0);


//implementation PORTE LOGIQUE

//PORTE AND
int regR = ~(regA & regB); //0b10 & 0b11=0b10  ou     0b01 & 0b11 = 0b01 

digitalWrite(regR1,(regR & 0b10));
digitalWrite(regR0,(regR & 0b01));


Serial.println(regA);
Serial.println(regB);
Serial.print("RESULT=");
Serial.println(regR);

delay(500);



}