Analog signal can be converted into a digital signal:
Ans.
An Analog signal can be converted into a digital signal by following the procedure as shown in the figure below.
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Fig. Block diagram of the analog to digital converter
Sampler:
It converts continuous amplitude continuous-time signal into continuous amplitude
discrete-time signal.
Quantizer:
It converts continuous amplitude discrete-time signal into discrete amplitude discrete-time signal. It approximates each sample into its nearest standard voltage level called quantization level. It is a process of rounding‐off the signal.
Encoder:
An encoder converts each quantized sample into a distinct codeword. Thus at the output of the encoder, we get digital code words.
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