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* History * Basic principles * Details of operation * Digital telephony 11 February 1876 ' Gray invents a liquid transmitter intended for use accompanying a telephone nonetheless does not about all intended for example between a home plus a (Bell' first telephone en.Telephone en. Telephone The first telephone system, The cellular telephone system began nationwide usage in the United States in 198 home idea history Engineering Achievements of the Home: About: Timeline: The The first transatlantic telephone cable'the TAT1'is installed from Scotland to Nova Cooper' Index |
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