Digital Logic Circuits (DLC) MCQs with answers Page - 10

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. When is it important to use a three-state buffer?

  • (A) when two or more outputs are connected to the same input
  • (B) when all outputs are normally high
  • (C) when all outputs are normally low
  • (D) when two or more outputs are connected to two or more inputs

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Q. After two clock pulses, the register contains

  • (A) 10111000
  • (B) 10110111
  • (C) 11110000
  • (D) 11111100

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Q. How much storage capacity does each stage in a shift register represent?

  • (A) one bit
  • (B) two bits
  • (C) four bits
  • (D) eight bits

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Q. The decimal number system represents the decimal number in the form of

  • (A) hexadecimal
  • (B) binary coded
  • (C) octal
  • (D) decimal

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Q. 29 input circuit will have total of

  • (A) 32 entries
  • (B) 128 entries
  • (C) 256 entries
  • (D) 512 entries

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Q. BCD adder can be constructed with 3 IC packages each of

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

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Q. The output sum of two decimal digits can be represented in

  • (A) gray code
  • (B) excess-3
  • (C) bcd
  • (D) hexadecimal

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Q. The addition of two decimal digits in BCD can be done through

  • (A) bcd adder
  • (B) full adder
  • (C) ripple carry adder
  • (D) carry look ahead

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Q. 3 bits full adder contains

  • (A) 3 combinational inputs
  • (B) 4 combinational inputs
  • (C) 6 combinational inputs
  • (D) 8 combinational inputs

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Q. The simplified expression of full adder carry is

  • (A) c = xy+xz+yz
  • (B) c = xy+xz
  • (C) c = xy+yz
  • (D) c = x+y+z

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