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Computer Science 14 Online
OpenStudy (anonymous):

can someone tell me about the Evolution of telegraphy and telephony.

OpenStudy (anonymous):

Well, thats a huge topic. All about telecommunication from Bell till now. I think it's an abroad subject to be told in few lines. But I will Give you some words. Telecommunications it's all about transmission of information from a place to another. Those transmissions can be via radio frequency or wires. Telephone works with electric signal that's will be converted or decoded in a frequency that humans can hear. It's almost like in telegraphy.

OpenStudy (anonymous):

thank you

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