Exam-style question
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A system is described as using a signal that changes between separate levels rather than changing smoothly. How should the signal be classified?.
- A.Analogue signal
- B.Digital signal
- C.Analogue data
- D.Continuous data
Model answer
What a good answer should say
- Digital signal
Explanation
Why this works
A signal that changes between separate levels is a digital signal. The question describes the signal, not the data being represented.
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