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analog signal

   Also found in: Medical, Financial, Acronyms, Wikipedia 0.01 sec.
analog signal [′an·əl‚äg ′sig·nəl]
(electronics)
A nominally continuous electrical signal that varies in amplitude or frequency in response to changes in sound, light, heat, position, or pressure.


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For more than 60 years, television programs have been broadcast using an analog signal.
It is difficult to detect when degradation occurs in an analog signal but a digital systems?
The biggest problem is that a digital signal is either all there or not there at all, unlike an analog signal that will fade or get scratchy when it's weaker, but doesn't go silent.
 
 
 
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