title: Whats the difference between UInt8 and uint8_t
body: <p>What is the differnce between <code>UInt8</code> and <code>uint8_t</code>, or <code>UInt16</code> and <code>unit16_t</code>?</p>
  
  <p>What does the <code>_t</code> imply?</p>