Telecommunication plays an important role in our life today. Generally telecommunication is the transmission of signal over a distance for purpose of sending information. By sharing information, human can get such a development today. information is even considered to be one of standard criteria to assess life quality of a man. Life quality of a man is assessed according to the amount of information he get and means of approaching information.
In earlier time telecommunication was done slowly by mean of simple methods such as the use of smoke signals, drums, semaphore, flags or heliograph, and usually could transfer a bit of information. For example, the use of smoke by indian can be understood as "the enemy has been sighted". For a longer distance and more detail massage, pegeon post was used.
Since the electronics was established and applied in communication, telecommunication has made a great advance toward all the fields of life today. Telecommunication is now understood as a system consists of three elements: a transmitter that takes information and converts it to a signal; a transmission medium that carries the signal; and a receiver that receives the signal and converts it back into usable information. For example, in a TV broadcast the broadcast tower is the transmitter, free space is the transmission medium and the TV is the receiver. Some other telecommunication system such as mobile phone, computer in net work act as both a transmitter and receiver or transceiver. Telecommunication has a significant social, cultural and economic impact on modern society.
Social impact it can be said that telecommunication bring people nearer. By using mobile phone, internet people in over the world can talk to each other, sharing information, photographs, profiles, events. There are even communities founded by internet users. No longer we must wait for weeks, months to get hand writing letters. All now done just a phone