Question: a- Why do we need sampling in analogue to digital conversion? b- What is the condition to sample a signal correctly? c- If a signal

a- Why do we need sampling in analogue to digital conversion? b- What is the condition to sample a signal correctly? c- If a signal is given by: v(t)=5+3sin500t1.2cos300t+0.5sin320t : What is the minimum frequency required and what is the practical range one may chose

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