Digital Electronics Combinational Logic Circuits Questions and Answers
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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59 questions
1. How many 3-line-to-8-line decoders are required for a 1-of-32 decoder?
- 1
- 2
- 4
- 8
5. How many 1-of-16 decoders are required for decoding a 7-bit binary number?
- 5
- 6
- 7
- 8
6. The implementation of simplified sum-of-products expressions may be easily implemented into actual logic circuits using all universal ________ gates with little or no increase in circuit complexity. (Select the response for the blank space that will BEST make the statement true.)
- AND/OR
- NAND
- NOR
7. Which of the following statements accurately represents the two BEST methods of logic circuit simplification?
- Boolean algebra and Karnaugh mapping
- Karnaugh mapping and circuit waveform analysis
- Actual circuit trial and error evaluation and waveform analysis
- Boolean algebra and actual circuit trial and error evaluation
8. Which of the following combinations cannot be combined into K-map groups?
- Corners in the same row
- Corners in the same column
- Diagonal corners
- Overlapping combinations
10. In VHDL, macrofunctions is/are:
- digital circuits.
- analog circuits.
- a set of bit vectors.
- preprogrammed TTL devices.