title: How to calculate decimal and hex values of one and two's complmement binary representation?
body: <p>For an example, assume an initial value of:</p>
  
  <p>0100 0011</p>
  
  <p>What is this in hex and what is it in decimal if using two's complement?</p>
  
  <p>Similarly, what is it in hex and decimal if using one's complement?</p>
  
  <p>More generally, how do you work out the hex and decimal values of both forms of binary representation?  </p>