Digital Electronics Logic Gates Questions and Answers
Digital Electronics Logic Gates questions with answers form the base of circuit design and digital systems. Students preparing for GATE, DRDO, and BARC exams must understand AND, OR, NOT, NAND, NOR, XOR, and XNOR gate operations. Practicing these electronics MCQs improves problem-solving accuracy in truth tables, Boolean algebra, and logic circuit simplification. These programming-style questions with explanations are ideal for both technical interviews and competitive electronics exams.
Covers types and functions of logic gates. Complement with digital electronics combinational logic circuits and boolean algebra
Digital Electronics Logic Gates
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78 questions
42. The basic logic gate whose output is the complement of the input is the:
- OR gate
- AND gate
- inverter
- comparator
43. When reading a Boolean expression, what does the word "NOT" indicate?
- the same as
- inversion
- high
- low
44. The output of an exclusive-NOR gate is HIGH if ________.
- the inputs are equal
- one input is HIGH, and the other input is LOW
- the inputs are unequal
- none of the above
46. Which of the following equations would accurately describe a four-input OR gate when A = 1, B = 1, C = 0, and D = 0?
- 1 + 1 + 0 + 0 = 01
- 1 + 1 + 0 + 0 = 1
- 1 + 1 + 0 + 0 = 0
- 1 + 1 + 0 + 0 = 00
47. What is the name of a digital circuit that produces several repetitive digital waveforms?
- an inverter
- an OR gate
- a Johnson shift counter
- an AND gate
48. The basic types of programmable arrays are made up of ________.
- AND gates
- OR gates
- NAND and NOR gates
- AND gates and OR gates
49. The logic gate that will have HIGH or "1" at its output when any one (or more) of its inputs is HIGH is a(n):
- OR gate
- AND gate
- NOR gate
- NOT operation
50. CMOS IC packages are available in ________.
- DIP configuration
- SOIC configuration
- DIP and SOIC configurations
- neither DIP nor SOIC configurations