You're working on code that's extremely low level. we're talking BIOS and hardware level. You have a program that can do a lot of good stuff with data from the hardware, but it takes Hexadecimal codes, and the raw output of the hardware code is in Binary. You need a way using JavaScript to convert binary numbers into hexadecimal ones. You're going to receive the binary data in 8-bit chunks and you have to return it's hexadecimal value as a string. No function convertBinaryArrayToHex(arr) { return an array of hexadecimal values

function convertBinaryArrayToHex(arr) {
  var res = [];
  for (var i = 0; i < arr.length; i += 4) {
    var value = 0;
    for (var j = 0; j < 4; j++) {
      value += arr[i + j] << (3 - j);
    }
    res.push(value.toString(16));
  }
  return res.join('');
}