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essay teliphone |
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Answer» Ans :- The telephone was invented by Graham Bell. The mechanical device of telephone is very simple. In every telephone set there is a transmitter and a receiver. The transmitter sends the voice of the speaker to the listener. The receiver receives the voice of the speaker. The two telephone sets are connected by wires. If the wires are detached anywhere, the communication is hampered. Nowadays, the use of wires has been replaced by the microwave telephone system. Mobile telephone is the latest development of the telephone system. The telephone is very useful. It helps all kinds of people beginning from merchants to doctors and lawyers. The latest information about the price and stock of the commodity in market can be available through telephone. |
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