DIGITAL COMMUNICATION



As we move forward in the 21st century, technological advancements have resulted in the digital transmission of communications media.
Digital Communication: refers to the conversion of sound, pictures and text into computer readable formats.
Analog Communication:
refers to the use of continuously signals corresponding to the light or sound signals originated from the source.





ADVANTAGES OF DIGITAL TRANSMISSION:



In Terms of Quality:

  • Since digital signals are not often swayed away by impedance and contortion the quality of transmission is better in comparison with the old analog systems.
  • Original transmission can be rejuvenated as long as the basic pattern of 1s and 0s is identified.
  • Any irrelevant noise can be eradicated from the transmission or recording.

In Terms of Channel Abundance:

  • Compression of digital messages allows lavish information to be eliminated. Thus, as multiple channels can be transmitted simultaneously, the total number of viewing choices increases.
  • Packet switching allows a number of users to share the same transmission channel at the same time by breaking digital information in to individually addressed chunks or packets.
  • There have been drastic increases in the available channel space for digital transmission. For instance, fiber optic systems use light to communicate information at higher speeds.

In Terms of User Control:

In order to cope with the increasing number of options available, user control programs have been developed. For instance,
  • Parental Control programs allow parents to instruct their computers in order to refrain their children from viewing unauthorized content on the internet.
  • V-Chip, an electronic tool automatically filters out adult and violent programming on television.



References:

  • Straubhaar, Joseph and Larose,Robert.Media Now. California: Allen, 2004.
  • Can you explain the basic difference between analog and digital technology? 2006. How stuff works Inc. 23 February 2006.
< http://electronics.howstuffworks.com/question7.htm >.
  • Advantages of Digital Technology. August 2005. Shop UK. 23 February 2006.
< http://www.shopuk.co.uk/blog/ >