title: What is Biased Notation?
body: <p>I have read:
  "Like an unsigned int, but oﬀset by −(2^(n−1) − 1), where n is the number of bits in the numeral. Aside:
  Technically we could choose any bias we please, but the choice presented here is extraordinarily common." - <a href="http://inst.eecs.berkeley.edu/~cs61c/sp14/disc/00/Disc0.pdf" rel="nofollow">http://inst.eecs.berkeley.edu/~cs61c/sp14/disc/00/Disc0.pdf</a></p>
  
  <p>However, I don't get what the point is. Can someone explain this to me with examples? Also, when should I use it, given other options like one's compliment, sign and mag, and two's compliment?</p>