Telegraph and Morse Code

 . A device used to transmit and receive signals over long distances.
 . Name is originated from Greek letters:
    Tele        : far
    graphein : writings
 . Invented by American Samuel F.B. Morse  in 1836.
 . Message sent through it is called telegram.
 . Person who operates is called Telegrapher.
 . Morse code is used to send message, which is also invented by Samuel Morse.
 . First message was sent in 1884 using Telegraph.


 . Morse Code is used to send data which has dots and dashes to represent characters.
 . It worked by pushing operator key down to complete the electric circuit.
 . This action sends the electric signals across a wire to receiver at other end.
 . All it requires is wire, line of poles between station and receiver and battery.
 . Operators will be able to hear and understand code just by listening to clicking of receiver.
 . They translate code into English.

Impact of Telegraph:

 . Before invention of Telegraph, people used handwritten, horseback methods to send messages to longer distances.
 . It was the first device that can send messages electronically.
 . After invention of Morse and Telegraph, it became the fastest mode of long distant communication.
 . It laid groundwork for all later inventions like telephone, fax machine, internet.

Rise and Decline:

 . During World War II, telegraph system was extensively used with troops and leaders to communicate.
 . Post offices also used telegraph system as way to receive and deliver messages.
 . All the long distant communication was depended upon telegraph until 1870's.
 . In 1877, Telephone was invented and changed the way people communicate.
 . By the invention of telephone, need for telegraphs began to decline and phased out.
 . Later in 1895, Guglielmo Marconi invented Wireless Telegraph which transmits signals using radio waves.