Digital Electronics - Section 1 (6)
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Digital Electronics - Section 1
| 41. | A ring counter with 5 flip flops will have |
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Answer: Option A Explanation: No answer description available for this question. Let us discuss. |
| 42. | BCD input 1000 is fed to a 7 segment display through a BCD to 7 segment decoder/driver. The segments which will lit up are |
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Answer: Option C Explanation: 1000 equals decimal 8 Therefore all segments will lit up. |
| 43. | A decade counter skips |
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Answer: Option C Explanation: A decade counter counts from 0 to 9. It has 4 flip-flops. The states skipped are 10 to 15 or 1010 to 1111. |
| 44. | In 2's complement representation the number 11100101 represents the decimal number |
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Answer: Option D Explanation: A = 11100101. Therefore A = 00011010 and A' = A + 1 = 00011011 = 16 + 8 + 2 + 1 = 27. Therefore A = -27. |
| 45. | A device which converts BCD to seven segment is called |
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Answer: Option B Explanation: Decoder converts binary/BCD to alphanumeric. |
| 46. | Both OR and AND gates can have only two inputs. |
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Answer: Option B Explanation: Any number of inputs are possible. |
| 47. | Decimal number 10 is equal to binary number |
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Answer: Option B Explanation: 1010 = 8 + 2 = 10 in decimal. |
| 48. | An OR gate has 4 inputs. One input is high and the other three are low. The output |
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Answer: Option B Explanation: In OR any input high means high output. |