Digital

Question

Which device changes serial data to parallel data

and which device changes parallel data to serial data?

How to check this

Answer 1

Serial data means one bit is being transmitted at a time and parallel data means more than one bit being transmitted at a time..

So most familiar of parallel to serial data converter is multiplexer..The reason being in multiplexer we provide  2ⁿ input bits and corresponding to that we get 1 bit as output according to the selection lines.

On the other hand , serial to parallel data converter is demultiplexer(decoder as well)..where we have one input (in case of demultiplexer) or one enable input(in case of decoder) but we have 2ⁿ bits as output bits..

Comments

2ⁿ to n rt?

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In multiplexer it is 2ⁿ to 1

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yes, MUX is 2ⁿ : 1 whereas encoder is 2ⁿ : n