Exercise :: Digital Electronics - Section 1
- Digital Electronics - Section 1
- Digital Electronics - Section 2
- Digital Electronics - Section 3
- Digital Electronics - Section 4
- Digital Electronics - Section 5
- Digital Electronics - Section 6
- Digital Electronics - Section 7
- Digital Electronics - Section 8
- Digital Electronics - Section 9
- Digital Electronics - Section 10
- Digital Electronics - Section 11
- Digital Electronics - Section 12
- Digital Electronics - Section 13
- Digital Electronics - Section 14
- Digital Electronics - Section 15
- Digital Electronics - Section 16
- Digital Electronics - Section 17
- Digital Electronics - Section 18
- Digital Electronics - Section 19
- Digital Electronics - Section 20
- Digital Electronics - Section 21
- Digital Electronics - Section 22
- Digital Electronics - Section 23
- Digital Electronics - Section 24
| 21. | An AND gate has two inputs A and B and one inhibit input 3, Output is 1 if |
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Answer: Option B Explanation: All AND inputs must be 1 and inhibit 0 for output to be 1. |
| 22. | The greatest negative number which can be stored is 8 bit computer using 2's complement arithmetic is |
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Answer: Option B Explanation: The largest negative number is 1000 0000 = -128. |
| 23. | A JK flip flop has tpd= 12 ns. The largest modulus of a ripple counter using these flip flops and operating at 10 MHz is |
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Answer: Option D Explanation: Number of flip-flops = Modulus = 28 = 256. |
= 8.333 say 8 | 24. | The basic storage element in a digital system is |
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Answer: Option A Explanation: Storing can be done only in memory and flip-flop is a memory element. |
| 25. | In a ripple counter, |
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Answer: Option A Explanation: In a ripple counter the effect ripples through the counter. |