title: Two's Complement of a Fractionary Binary Number
body: <p>Two's Complement of 1101 = 0011 (invert all the bits and add 1 to the right-most bit)</p>
  <p>I know how to apply Two's Complement to whole numbers, I just don't know how to do it to fractionary ones.</p>
  <p>For example, Two's Complement of 1101.011:</p>
  <ul>
  <li>0011.100 (invert all bits and add 1 to the whole part) ?</li>
  <li>0010.101 (invert all bits and add 1 only to the right-most fractionary bit) ?</li>
  <li>Or maybe something else entirely ?</li>
  </ul>
  <p>I've searched this before and just couldn't find an understandable answer. Thx a lot in advance =)</p>