void setup() {
  for (int i = 0; i < 8; i++) {
    pinMode(i, OUTPUT);
  }
}

void loop() {
  int myBit = 0b01001101;
  displayBits(myBit);
  delay(2000);

  int notMyBit = ~myBit;
  displayBits(notMyBit);
  delay(2000);
}

void displayBits(uint8_t bits) {
  for (int i = 0; i < 8; i++) {
    digitalWrite(i, bitRead(bits, i));
  }
}