Analog signal

Analog signal is a term used in engineering (especially electrical engineering, information engineering, and technical controls), ie a change in scale and in time or space, and which has all the values for each value of time (and / or any value space ). Also the term used kontiyu cues, to illustrate that the scale had a value of continuous (unbroken).

Examples of analog signals are electrical signals generated by electrical equipment of non-digital: the voice signal on conventional radio, the signal image (picture) on a conventional camera, a video signal on conventional television.

Source :http://id.wikipedia.org/wiki/Sinyal_analog