title: Difference between bit and sbit?
body: <p>What is the difference between the <code>bit</code> and <code>sbit</code> keywords in Keil C51 for the 8051 Microcontroller? </p>
  
  <p>When should <code>sbit</code> be used and when <code>bit</code>? </p>
  
  <p>Some examples would be very helpful.</p>