title: C Read char as binary
body: <p>This is actually part of a project I'm working on using an avr. I'm interfacing via twi with a DS1307 real-time clock IC. It reports information back as a series of 8 chars. It returns in the format:</p>
  
  <pre><code>// Second : ds1307[0]
  // Minute : ds1307[1]
  // Hour   : ds1307[2]
  // Day    : ds1307[3]
  // Date   : ds1307[4]
  // Month  : ds1307[5]
  // Year   : ds1307[6]
  </code></pre>
  
  <p>What I would like to do is take each part of the time and read it bit by bit. I can't think of a way to do this. Basically lighting up an led if the bit is a 1, but not if it's a 0. </p>
  
  <p>I'd imagine that there is a rather simple way to do it by bitshifting, but I can't put my finger on the logic to do it. </p>