Digital Electronics and Logic Design MCQs with answers Page - 47

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 largest truth table that can be implemented directly with an 8-line- to-1-line MUX has .

  • (A) 3 rows
  • (B) 4 rows
  • (C) 8 rows
  • (D) 16 rows

A

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Q. Parity generation and checking is used to detect .

  • (A) which of two numbers is greater
  • (B) errors in binary data transmission
  • (C) errors in arithmetic in computers
  • (D) when a binary counter counts incorrectly

A

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Q. A gate that could be used to compare two logic levels and provide a HIGH output if they are equal is a(n) .

  • (A) xor gate
  • (B) xnor gate
  • (C) nand gate
  • (D) nor gate

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Q. VHDL is very strict in the way it allows us to assign and compare such as signals, variables, constants, and literals.

  • (A) objects
  • (B) logic_vect ors
  • (C) designs
  • (D) arrays

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Q. The AND-OR-INVERT gates are designed to simplify implementation of .

  • (A) pos logic
  • (B) demorgans theorem
  • (C) nand logic
  • (D) sop logic

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Q. The output of a gate has an internal short; a current tracer will .

  • (A) identify the defective gate
  • (B) show whether the gate is shorted to v cc or ground
  • (C) probably not be able to locate the problem
  • (D) be able to identify the defective load node

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Q. The input at the 1, 2, 4, 8 inputs to a 4-line to 16-line decoder with active- low outputs is 1110. As a result, output line 7 is driven LOW.

  • (A) true
  • (B) false
  • (C) none of the above
  • (D) can not predict

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Q. When decisions demand two possible actions, the IF/THEN/ELSE control structure is used.

  • (A) true
  • (B) false
  • (C) none of the above
  • (D) can not predict

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Q. TTL stands for transistor-technology-logic.

  • (A) true
  • (B) false
  • (C) none of the above
  • (D) can not predict

A

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Q. The 54 prefix on ICs indicates a broader operating temperature range, generally intended for military use.

  • (A) true
  • (B) false
  • (C) none of the above
  • (D) can not predict

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