Digital Electronics 面试题与答案
Test your skills through the online practice test: Digital Electronics Quiz Online Practice Test
问题 21. What is the role of an XOR gate in digital circuits?
An XOR gate produces a high output when the number of high inputs is odd.
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问题 22. Define the terms 'hazard' and 'hazard cover' in digital circuits.
A hazard is a momentary glitch in the output, and a hazard cover is a technique used to eliminate or mitigate hazards.
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问题 23. Explain the concept of synchronous reset in flip-flops.
A synchronous reset ensures that the flip-flop is reset only when the clock signal is active.
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问题 24. What is the purpose of a NAND gate in digital circuits?
A NAND gate produces a low output only when all of its inputs are high.
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问题 25. How does a multiplexer function as a data selector?
A multiplexer selects one data input from multiple sources based on the control inputs.
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