title: Interrupts and exceptions
body: <p>I've seen several question on here about <a href="https://stackoverflow.com/questions/tagged/exception?sort=votes">exceptions</a>, and some of them hint at <a href="https://stackoverflow.com/search?s=interrupt+exception">interrupts as exceptions</a>, but none make the connection clear.</p>
  
  <ul>
  <li><p>What is an interrupt?</p></li>
  <li><p>What is an exception? (please explain what exceptions are for each language you know, as there are some differences)</p></li>
  <li><p>When is an exception an interrupt and vice-versa?</p></li>
  </ul>