Digital Logic Circuits (DLC) MCQs with answers Page - 14

Here, you will find a collection of MCQ questions on Digital Logic Circuits (DLC). Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. In 1-to-4 demultiplexer, how many select lines are required?

  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 5

A

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Q. In a multiplexer the output depends on its

  • (A) data inputs
  • (B) select inputs
  • (C) select outputs
  • (D) enable pin

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Q. In 1-to-4 multiplexer, if C1 = 1 & C2 = 1, then the output will be

  • (A) y0
  • (B) y1
  • (C) y2
  • (D) y3

A

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Q. How many select lines are required for a 1-to-8 demultiplexer?

  • (A) 2
  • (B) 3
  • (C) 4
  • (D) 5

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Q. How many AND gates are required for a 1-to-8 multiplexer?

  • (A) 2
  • (B) 6
  • (C) 8
  • (D) 5

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Q. Which IC is used for the implementation of 1-to-16 DEMUX?

  • (A) ic 74154
  • (B) ic 74155
  • (C) ic 74139
  • (D) ic 74138

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Q. The word demultiplex means

  • (A) one into many
  • (B) many into one
  • (C) distributor
  • (D) one into many as well as distributor

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Q. Why is a demultiplexer called a data distributor?

  • (A) the input will be distributed to one of the outputs
  • (B) one of the inputs will be selected for the output
  • (C) the output will be distributed to one of the inputs
  • (D) single input to single output

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Q. In 1-to-4 multiplexer, if C1 = 0 & C2 = 1, then the output will be

  • (A) y0
  • (B) y1
  • (C) y2
  • (D) y3

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Q. What is the addition of the binary numbers 11011011010 and 010100101?

  • (A) 0111001000
  • (B) 1100110110
  • (C) 11101111111
  • (D) 10011010011

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