Outcomes
        In this lesson you will  
        - distinguish between information encoded in digital and analog forms 
 
          - describe carrier wave 
 
          - describe amplitude modulation as a means of sending analog information over electromagnetic carrier waves 
 
          - describe frequency modulation as a means of sending analog information over electromagnetic carrier waves 
 
          - describe pulse modulation as a means of sending digital  information over electromagnetic carrier waves
 
        
Prerequisites
        To be successful in this lesson, it would be helpful to know the following: 
        
        - electromagnetic radiation 
 
          - electromagnetic spectrum