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telephone is envented by Alexander Graham Bell, he was very interested in how human make and hear speech, beacause he was a teacher of the deaf. He invented a microphone that could send sounds of speech down a wire. Then he invented a reciver that could collect incoming speech sounds. These became the two main parts of telephone. One day, when bell was in his laboratory, he spilled some acid on his trousers. Over the microphone, he called out to his assistant for held. Mr Watson, came here I want you. At that time, Mr Watson was on a different floor of the building. But he heard Bell's voice clearly over the new device. Bell had invented the first telephone. It was 10th March 1876. Telephone is the best option of communication.

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13y ago

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