Describe digital and analouge signal including the correct use of measurments?

Answer 1

digital signals are measured by state, either 1 or 0. that is the binary system (only two numbers, 1 and 0). it can be compared to a light bulb. when you turn it on, that's a 1. when you turn it off, that's a 0. the recieving station is timing the arrival of these signal states and sends that information to a processor which makes sense of it all. an analog system has an infinitely variable signal potential. it looks more like a wave, and no processor is necessary to interpret the signal. that wave, in audio electronics, is exactly proportional to the actual sound wave that propogated through air to the microphone which turned that into an electrical signal which was sent to a recording device. the recorded wave then controls electrical voltage in the playback device which then sends that signal straight to the amplifiers. an analoge signal may be measured with a regular multimeter or oscilloscope. a digital signal requires a computer or signal analyzer to interpret the signal. that's not quite everything, but there's way too much to explain here.

Answer 2

Any signal that is expressed in 0s and 1s is a digital signal,
example music on a audio-CD.
Your voice as recorded on a cassete is an analog signal.
A VHS tape has video in analog. A DVD has video in digital signal.

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