A circuit that changes a code into a set of signals is called

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RRB ALP Electronics Mechanic 21 Jan 2019 Official Paper (Shift 3)
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  1. Encoder
  2. multiplexer
  3. Decoder
  4. Selector

Answer (Detailed Solution Below)

Option 3 : Decoder
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Types of DIgital circuits

1.) Decoder

F4 Vinanti Engineering 06.02.23 D6

  • A decoder is a circuit that changes a binary code into a particular set of signals.
  • The set of signals can be decimal, octal, or hexadecimal.
  • It converts N inputs into 2N outputs.

2.) Encoder

F4 Vinanti Engineering 06.02.23 D7

  • An encoder is a circuit that changes a particular set of signals into binary code.
  • It converts 2N inputs to N outputs.

3.) Multiplexer

F4 Vinanti Engineering 06.02.23 D8

  • A multiplexer is a circuit that has 2n input lines and a single output line.
  • It converts multiple inputs into a single output.
  • The output is produced as per the status of the selection line.

4.) Demultiplexer

F4 Vinanti Engineering 06.02.23 D9

  • A demultiplexer is a circuit that has n input lines and a 2n output line.
  • It converts single input into multiple outputs.
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