Revise GCSE Physics

Question:How would you explain the main difference between a Digital signal and an Analogue Signal?

Aside from the types of values that the two signals can take:

The main difference is that attenuation and interference (noise) are less of an issue for Digital signals because noise and attenuation do not immediately change the value of the meaning of the signal, so the information being sent is preserved even though the appearance of the signal is slightly altered.

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