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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