Q.Distinguish between an analogue signal and a digital signal, giving one everyday example of each.

An analogue signal varies smoothly and continuously over a range, with no smallest meaningful step -- an ordinary microphone's electrical output, directly following the continuously varying pressure of a sound wave, is a typical example. A digital signal is restricted to only a small, FIXED set of discrete levels -- almost always exactly two, HIGH (logic $1$) and LOW (logic $0$) -- a computer's internal data, built from transistor switches (Section 9.23) that themselves have only …

• Giving an example that is not genuinely continuous (analogue) or genuinely two-level (digital). …