Electronics and Communication Engineering - Digital Electronics
Exercise :: Digital Electronics - Section 13
1. |
A buffer is a device that isolates other devices. Typically a buffer has |
A. |
a high input impedance and a low output impedance | B. |
a high input impedance as well as output impedance | C. |
a low input impedance and a high output impedance | D. |
a low input impedance as well as output impedance |
Answer: Option A
Explanation:
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2. |
Which of the following is used as switch? |
A. |
J-K flip-flop | B. |
Master slave J-K flip-flop | C. |
T-flip-flop | D. |
D-flip-flop |
Answer: Option D
Explanation:
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3. |
In a positive edge triggered D flip flop |
A. |
D input is called direct set | B. |
Preset is called direct reset | C. |
Present and clear are called direct set and reset respectively | D. |
D input overrides other inputs |
Answer: Option C
Explanation:
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4. |
The first contribution to logic was made by |
A. |
George Boole | B. |
Copernicus | C. |
Aristotle | D. |
Shannon |
Answer: Option C
Explanation:
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5. |
Average latency time of magnetic tape memory is of the order of |
Answer: Option D
Explanation:
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