plz answer

Asked by  | 20th Jan, 2009, 08:08: PM

Expert Answer:

We could say a "signal" could be digital. But to move that signal around via an analog medium, such as a radio wave or a piece of wire, you would have to encode it via an analog means, such as modulation. It is true that digital signals travelling through the air must do it by piggybacking on something analog. So in a modem digital signal is converted into a anlog signal to transmit it.

Answered by  | 22nd Jan, 2009, 11:49: AM

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