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Write the comparative study between Multiplexer, Encoder, Decoder andDemultiplexer.

Question

Write the comparative study between Multiplexer, Encoder, Decoder and Demultiplexer.

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Solution

A comparative study between Multiplexer, Encoder, Decoder, and Demultiplexer can be understood by defining each term and then comparing their functions and uses.

  1. Multiplexer (MUX): A multiplexer is a combinational circuit that selects binary information from one of many input lines and directs it to a single output line. The selection of a particular input line is controlled by a set of selection lines. The multiplexer is used in data routing, data compression, and data communication.

  2. Encoder: An encoder is a circuit that changes a set of signals into a code. It performs the opposite operation of a decoder. Encoders are used in numerous applications, including data multiplexing, error detection and correction schemes, and in the design of sequential circuits.

  3. Decoder: A decoder is a combinational circuit that converts binary information from n coded inputs to a maximum of 2^n unique outputs. They are used in various applications, including data demultiplexing, memory address decoding, and data decoding.

  4. Demultiplexer (DEMUX): A demultiplexer performs the reverse operation of a multiplexer. It takes a single input and routes it to one of several outputs. It is used in data routing, data distribution, and data communication.

Comparative Study:

  • Functionality: Multiplexers and demultiplexers are used for data routing, while encoders and decoders are used for data transformation.

  • Operation: Multiplexers select one input from many and send it to a single output, while demultiplexers take a single input and route it to one of many outputs. On the other hand, encoders convert a set of signals into a code, while decoders convert coded inputs into unique outputs.

  • Use: Multiplexers are used when data from multiple sources need to be sent over a single line, while demultiplexers are used when data from a single source needs to be sent to multiple destinations. Encoders are used when data needs to be compressed or transformed into a different format, while decoders are used when data needs to be decompressed or transformed back to its original format.

In conclusion, while all four devices are used in data processing and communication, they each serve unique roles and are used in different scenarios.

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