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Telecommunication
It is the science and technology of communication by electronic transmission of impulse or it is an electronic system of transmitting messages like by telephone, telegraph, mobile phones, television, radio, internet etc. In modern society, telecommunication becomes a main medium of conversation including voice and music, full motion pictures or computer files. The use of telecommunication began with use of drums and smoke signals in South Africa, china, in America. Alex gender, Graham Bell invented Telephone, Marconi invented radio, J.L Baird discovered television in the field of telecommunication and this becomes great part of world's economy.
A typical system of telecommunication consists of mainly three basic concepts, Firstly, a transmitter that transmits the signal, a transmission signal that carries the signal, thirdly a receiver that receives the signal and converts it into useful information. Signals may be analog or digital. Now days it become main part of modern society. People work their mostly on telephones. Business use telecommunication for expend their business and home owner use telephone to manage their home services. A world wide network of computers is called internet in which one computer is connected to another computer to transmit the information. Any computer my convey information using its IP address.
Telecommunication sector have been recognized as one of the best recruiters in the Indian jobs market. Telecommunication sector has been reinvigorated due to high speed internet access, clear telephone calls, and high - definition television programs. Besides this telecom sector employee thousand workers and making major investments. On line telecommunication centre programs make it easy to develop skills in operators and programmers. People use different communicating technology for sending and receiving messages.
E-Mail or electronic mail is a message transmitted through computer in which both sender and receiver connected to on line server. It is now become main medium of telecommunication. Fax
machine transmits exact image or document through telephone lines. Similarly, voice mail is an answering machine in which a caller leaves a voice message in the mail box and caller's message is stored in the disk. Electronic meetings are held with the help of videoconferencing in which participant commutate with each other from different part of the country. It involves television cameras, communication soft wares and computers.
More Information
Internet is the fastest and global mean of communication and million of people use this daily. Realty is that telecommunication is not a new technology. It started in the 1800s with the discovery of telegraph in which sounds transmitted manually. Then typewriter developed in 1900s to transmit the written words.Telecommnication showed a wide and rapid change since 1960s. Due to the developed of modem technology. New technology has created competition and network services throughout the world. There are to ways of communication through computer network, mainly LAN's and WAN's. In LAN's People communicate with each other through small geographical area of about hundred kilometers. It may confine within a room or buildings. Whereas WAN covers a large area such as cable system. Through telecommunication individuals and business access information very fastly at electronic speed from anywhere in the world. By telecommunication businesses can provide better products and services to their customers. Telecommunicating and information technology play a important role in protecting environment and promote development activities. Latest telecommunication technologies extremely useful in conducting environmental activities such as observation of earth, degradation of ecosystem, remote sensing, studying process of floods, draughts or of cyclones, wild fauna, develop forest resources and control deforestation.
Telecommunication reduces paper consumption which really saves forests. Telecommunicating and teleconferencing replace the use of transport especially in urban areas, thus low the level of pollution by non exposure of greenhouse gases like CO2 and saves energy.
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