Tuesday, 28 February 2012

History of Communication System


Communication is the basic process of information exchange
History:
  • Telegraph was invented in 1844
  • Telephone was invented in 1876
  • Radio was demonstrated in 1895
  • Marconi demonstrated transatlantic radio transmission in 1901
  • Television was invented in 1923
  • Color TV began in 1954
  • First communication satellite was launched in 1962
  • Now the current technologies are wireless transmission, fiber optic networks
Back                                                Contents                                           Next            

No comments:

Post a Comment