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A _________ is a multiple-input, multiple-output logic circuit which converts coded inputs into coded outputs, where the input and output code are different.
  • a)
    decoder
  • b)
    demultiplexer
  • c)
    multiplexer
  • d)
    encoder
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A _________ is a multiple-input, multiple-output logic circuit which c...
A decoder is a multiple-input, multiple-output logic circuit which converts coded inputs into coded outputs, where the input and output code are different.

What is a decoder?
A decoder is a combinational logic circuit that takes coded inputs and converts them into coded outputs. It has multiple input lines and multiple output lines. The input code is different from the output code, which means that the binary information represented by the input code is decoded to produce the output code.

Working principle of a decoder
The working principle of a decoder is based on the fact that each input combination corresponds to a unique output combination. The decoder has 2^n input lines and 2^m output lines, where n is the number of input lines and m is the number of output lines. The input lines are coded in binary format, and the output lines are also coded in binary format but with a different code.

Types of decoders
1. Binary decoder: This type of decoder has n input lines and 2^n output lines. Each input combination corresponds to a unique output line. The output lines are activated based on the input code, and the remaining output lines remain inactive.
2. BCD decoder: This type of decoder is used to decode a Binary Coded Decimal (BCD) input into its corresponding decimal output. It has 4 input lines and 10 output lines, representing the decimal digits 0 to 9.
3. 7-segment decoder: This type of decoder is used to decode a binary input into a 7-segment display output. It has 4 input lines and 7 output lines, representing the segments of a 7-segment display.

Applications of decoders
Decoders are widely used in various digital systems and circuits. Some common applications include:
- Address decoding in memory systems
- Data demultiplexing
- Digital display systems
- Error detection and correction
- Control circuits in microprocessors and microcontrollers

Decoders play a crucial role in digital electronics as they enable the conversion of coded information into meaningful output. They are essential components in various digital systems and circuits, providing the necessary decoding capabilities for efficient data processing and control.
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Community Answer
A _________ is a multiple-input, multiple-output logic circuit which c...
Encoder:
An encoder has 2n input lines and n output lines. In the encoder, the output lines generate the binary code corresponding to the input value which is active high.
Decoder:
It is a multi-input and multi-output logic circuit that converts coded inputs into coded outputs where input and output codes are different. Input code has fewer bits than output code. There is one to one mapping from input to output.
Multiplexer:
It is a digital switch. It allows digital information from several sources to be routed onto a single output line. A basic multiplexer has several data input lines and a single output line. The selection of a particular input line is controlled by selection lines. It is many to one mapping and provides the digital equivalent of an analog selector switch. Therefore it is the correct answer
Demultiplexer:
It is a circuit that receives information on a single line and transmits information on one of the 2n output lines. Selection of output line is controlled by values of n selection lines.
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A _________ is a multiple-input, multiple-output logic circuit which converts coded inputs into coded outputs, where the input and output code are different.a)decoderb)demultiplexerc)multiplexerd)encoderCorrect answer is option 'A'. Can you explain this answer?
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