title: System where 1 byte != 8 bit?
body: <p>All the time I read sentences like</p>
  <blockquote>
  <p>don't rely on 1 byte being 8 bit in size</p>
  <p>use <code>CHAR_BIT</code> instead of 8 as a constant to convert between bits and bytes</p>
  </blockquote>
  <p>et cetera. What real life systems are there today, where this holds true?
  <sub>(I'm not sure if there are differences between C and C++ regarding this, or if it's actually language agnostic. Please retag if neccessary.)</sub></p>