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...ally be categorized as analog, discrete, or mixed-signal (a combination of analog and discrete) electronic circuits. ==Analog circuits==

In [https://en.wikipedia.org/wiki/Electronics electronics], '''modulation''' is the [[process]] of varying one or more properties of ...of conveying a [[message]] signal, for example a digital bit stream or an analog audio signal, inside another signal that can be [[physically]] [[transmitte

...means unwanted [[sound]] or noise pollution[1]. In both analog and digital electronics, noise or [[signal]] noise is an unwanted [[random]] addition to a wanted s ...dos.co.uk/cgi-bin/FlexiData.cgi?SOURCE=Articles Audio Measuring Articles - Electronics]

...books compares electrical circuits to hydraulics. Another example is the [[analog ear]] based on electrical, electronic or mechanical devices. ...nnels are used to test scale models of wings and aircraft, which act as an analog to full-size wings and aircraft.