Analogue and digital
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What is an analogue signal?
A signal that can have any value of amplitude and changes continuously.
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What is a digital signal?
A signal that only has two possible values — it is either “on” or “off,” represented by 1s and 0s.
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How do analogue signals vary?
They fluctuate continuously in amplitude.
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How do digital signals vary?
They switch between discrete high and low values (binary).
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What is one advantage of digital over analogue signals?
Digital signals are less affected by noise and can be transmitted and processed more reliably.
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What is one advantage of analogue signals?
They can represent smooth, continuous changes — useful for natural signals like soun
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