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Home ‣ Digital Electronics ‣ Flip-Flops See What Others Are Saying!
- Question
How many flip-flops are in the 7475 IC?
Options- A. 1
- B. 2
- C. 4
- D. 8
- Correct Answer
- 4
- 1. Applying DeMorgan's theorem and Boolean algebra to the expression
results in ________.
Options- A.
- B.
- C.
- D.
Discuss
- 2. A certain BCD-to-decimal decoder has active-HIGH inputs and active-LOW outputs. Which output goes LOW when the inputs are 1001?
Options- A. 0
- B. 3
- C. 9
- D. None. All outputs are HIGH. Discuss
- 3. In a typical digital system, Logic 0 is 0V?0.8V, and Logic 1 is ________.
Options- A. 2?5V
- B. 2.5?5V
- C. 3.0?5.5V
- D. 3.5?5.5V Discuss
- 4. A(n) ________ display controls the reflection of available light.
Options- A. MOS
- B. LCD
- C. LED
- D. LSC Discuss
- 5. A classification of ICs with complexities of 100 to 10,000 equivalent gates per chip is known as ________.
Options- A. SSI
- B. MSI
- C. LSI
- D. VLSI Discuss
- 6. The rise time is the time it takes a pulse to go from ________.
Options- A. the base line to the maximum HIGH voltage
- B. 10% of the pulse amplitude to the maximum HIGH voltage
- C. the base line to 90% of the pulse amplitude
- D. 10% of the pulse amplitude to 90% of the pulse amplitude Discuss
- 7. In a certain digital waveform, the period is four times the pulse width. The duty cycle is ________.
Options- A. 0%
- B. 25%
- C. 50%
- D. 100% Discuss
- 8. A periodic digital waveform has a pulse width (tw) of 6 ms and a period (T) of 18 ms. The duty cycle is ________.
Options- A. 3.3%
- B. 33.3%
- C. 6%
- D. 18% Discuss
- 9. A common instrument used in troubleshooting a digital circuit is a(n) ________.
Options- A. logic probe
- B. oscilloscope
- C. pulser
- D. all of the above Discuss
- 10. Which of the following statements does NOT describe an advantage of digital technology?
Options- A. The values may vary over a continuous range.
- B. The circuits are less affected by noise.
- C. The operation can be programmed.
- D. Information storage is easy. Discuss
More questions
Correct Answer:
Correct Answer: 9
Correct Answer: 2?5V
Correct Answer: LCD
Correct Answer: LSI
Correct Answer: 10% of the pulse amplitude to 90% of the pulse amplitude
Correct Answer: 25%
Correct Answer: 33.3%
Correct Answer: all of the above
Correct Answer: The values may vary over a continuous range.
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