Alexander graham bell invented the harmonic or musical telegraph, which enabled

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asked Apr 4, 2018 220k views

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M Reddy · Answer 1 · 2018-04-07T21:23:49+0000

Telegraph with dot-and-dash marsh code basically limited to receive,send one message at a time. Bell extensive knowledge nature sound understand music and more than one message can be sent over a single telegraph wire at same time

Alexander graham bell invented the harmonic or musical telegraph, which enabled

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