Download

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.

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.