title: What is difference between inportb() and inport() function?
body: <p>I've newly started learning <code>System Programming</code>. I got confused with these two functions. could any one tell me what are the differences between these Functions </p>
  
  <p><code>inportb()</code> and <code>inport()</code> </p>
  
  <p><code>outportb()</code> and <code>outport()</code>
   ??</p>