Digital Electronics - Flip-Flops
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Exercise"To err is human; to forgive, divine."
- Alexander Pope
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| 13. |
One example of the use of an S-R flip-flop is as a(n): |
| A. |
racer | | B. |
astable oscillator | | C. |
binary storage register | | D. |
transition pulse generator |
Answer: Option C
Explanation:
No answer description available for this question. Let us discuss.
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| 14. |
What is the difference between the 7476 and the 74LS76? |
| A. |
the 7476 is master-slave, the 74LS76 is master-slave | | B. |
the 7476 is edge-triggered, the 74LS76 is edge-triggered | | C. |
the 7476 is edge-triggered, the 74LS76 is master-slave | | D. |
the 7476 is master-slave, the 74LS76 is edge-triggered |
Answer: Option C
Explanation:
No answer description available for this question. Let us discuss.
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| 15. |
Which of the following is correct for a gated D flip-flop? |
| A. |
The output toggles if one of the inputs is held HIGH. | | B. |
Only one of the inputs can be HIGH at a time. | | C. |
The output complement follows the input when enabled. | | D. |
Q output follows the input D when the enable is HIGH. |
Answer: Option B
Explanation:
No answer description available for this question. Let us discuss.
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| 16. |
With regard to a D latch, ________. |
| A. |
the Q output follows the D input when EN is LOW | | B. |
the Q output is opposite the D input when EN is LOW | | C. |
the Q output follows the D input when EN is HIGH | | D. |
the Q output is HIGH regardless of EN's input state |
Answer: Option A
Explanation:
No answer description available for this question. Let us discuss.
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| 17. |
How can the cross-coupled NAND flip-flop be made to have active-HIGH S-R inputs? |
| A. |
It can't be done. | | B. |
Invert the Q outputs. | | C. |
Invert the S-R inputs. |
Answer: Option B
Explanation:
No answer description available for this question. Let us discuss.
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| 18. |
When is a flip-flop said to be transparent? |
| A. |
when the Q output is opposite the input | | B. |
when the Q output follows the input | | C. |
when you can see through the IC packaging |
Answer: Option A
Explanation:
No answer description available for this question. Let us discuss.
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