Digital Electronics Combinational Logic Circuits Questions and Answers

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The Combinational Logic Circuits questions with answers focus on logic gates, Boolean algebra, K-maps, and circuit simplification techniques in digital electronics. These logical reasoning questions and answers help students understand how digital systems process information. Frequently asked in ECE exams and electronics company placements like BEL, ISRO, and TCS, these questions strengthen analytical and circuit design skills. Study the truth tables, logic expressions, and practical implementations to master this essential topic in digital design.

Digital Electronics Combinational Logic Circuits

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31. An encoder in which the highest and lowest value input digits are encoded simultaneously is known as a priority encoder.

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32. Three select lines are required to address four data input lines.

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33. Single looping in groups of three is a common K-map simplification technique.

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34. In true sum-of-products expressions, the inversion signs cannot cover more than single variables in a term.

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35. A data selector is also called a demultiplexer.

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36. A digital circuit that converts coded information into a familiar or non-coded form is known as an encoder.

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37. An exclusive-OR gate will invert a signal on one input if the other is always HIGH.

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38. The following combination is correct for an EVEN parity data transmission system: data = 100111100 and parity = 0

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39. The CASE control structure is used when an expression has a list of possible values.

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40. Even parity is the condition of having an even number of 1s in every group of bits.

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