1 minute speech about the telephone invention
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Modern man enjoys a number of wonderful gifts of science. The telephone is one of them. It is the quickest means of conveying messages from one place to another. After the invention of this instrument, man has conquered time and space.
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.
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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.
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