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Question 85Asked in BPSC TRE 3.0 (2024) Computer Science Class 11-12

What is the purpose of the “don’t care” condition in digital logic?

  1. ATo indicate that the value of a variable does not affect the output
  2. BTo prioritize certain inputs over others
  3. CTo ensure that all possible input combinations are covered in truth tables
  4. DMore than one of the above
  5. ENone of the above
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Correct answer: (A) To indicate that the value of a variable does not affect the output

Explanation

A don't-care condition marks an input combination whose output value does not matter, so it can be taken as 0 or 1 to simplify a K-map.

From BPSC TRE 3.0 (2024) Computer Science Class 11-12 — Previous Year Paper

This is question 85 of BPSC TRE 3.0 (2024) Computer Science Class 11-12 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.