Digital Electronics and Logic Design MCQs with answers Page - 32

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

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Q. The digital multiplexer is basically a combination logic circuit to perform the operation

  • (A) and-and
  • (B) or-or
  • (C) and-or
  • (D) or-and

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Q. How many lines the truth table for a four-input NOR gate would contain to cover all possible input combinations ?

  • (A) 4
  • (B) 8
  • (C) 12
  • (D) 16

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Q. How many truth tables can be made from one function table ?

  • (A) 1
  • (B) 2
  • (C) 3
  • (D) any no

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Q. A comparison between serial and parallel adder reveals that serial order

  • (A) is slower
  • (B) is faster
  • (C) operates at the same speed as parallel adder
  • (D) is more complicate d

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Q. What is the largest number of data inputs which a data selector with two control inputs can have ?

  • (A) 2
  • (B) 4
  • (C) 6
  • (D) 8

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Q. If a logic gates has four inputs, then total number of possible input combinations is

  • (A) 4
  • (B) 8
  • (C) 16
  • (D) 32

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Q. If a logic gates has four inputs, then total number of possible input combinations is

  • (A) input combination at the time
  • (B) input combination and the previous output
  • (C) nput combination at that time and the previous input combination
  • (D) present output and the previous output

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Q. A combinational logic circuit which generates a particular binary word or number is

  • (A) decoder
  • (B) multiplexer
  • (C) encoder
  • (D) demultiple xer

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Q. Which of the following circuit can be used as parallel to serial converter ?

  • (A) multiplexer
  • (B) demultiplexe r
  • (C) decoder
  • (D) digital counter

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Q. In which of the following adder circuits, the carry look ripple delay is eliminated ?

  • (A) half adder
  • (B) full adder
  • (C) parallel adder
  • (D) carry- look- ahead adder

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