Digital Principles and System Design MCQs with answers Page - 2

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Q. The expression for Absorption law is given by

  • (A) a + ab = a
  • (B) a + ab = b
  • (C) ab + aa’ = a
  • (D) a + b = b + a

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Q. DeMorgan’s theorem states that

  • (A) (ab)’ = a’ + b’
  • (B) (a + b)’ = a’ * b
  • (C) a’ + b’ = a’b’
  • (D) (ab)’ = a’ + b

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Q. Maxterm is the sum of of the corresponding Minterm with its literal complemented.

  • (A) terms
  • (B) words
  • (C) numbers
  • (D) nibble

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Q. There are Minterms for 3 variables (a, b, c).

  • (A) 0
  • (B) 2
  • (C) 8
  • (D) 1

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Q. expressions can be implemented using either (1) 2-level AND-OR logic circuits or (2) 2-level NAND logic circuits.

  • (A) pos
  • (B) literals
  • (C) sop
  • (D) pos

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Q. There are cells in a 4-variable K-map.

  • (A) 12
  • (B) 16
  • (C) 18
  • (D) 8

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Q. The K-map based Boolean reduction is based on the following Unifying Theorem: A + A’ = 1.

  • (A) impact
  • (B) non impact
  • (C) force
  • (D) complementarity

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Q. Each product term of a group, w’.x.y’ and w.y, represents the in that group.

  • (A) input
  • (B) pos
  • (C) sum-of-minterms
  • (D) sum of maxterms

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Q. The prime implicant which has at least one element that is not present in any other implicant is known as

  • (A) essential prime implicant
  • (B) implicant
  • (C) complement
  • (D) prime complement

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Q. Product-of-Sums expressions can be implemented using

  • (A) 2-level or-and logic circuits
  • (B) 2-level nor logic circuits
  • (C) 2-level xor logic circuits
  • (D) both 2-level or-and and nor logic circuits

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