Flip Flops – Exercise – 2

56. To completely load and then unload an 8-bit register requires how many clock pulses?

(a) 2
(b) 4
(c) 8
(d) 16

Answer
Answer : (d)
Explanation
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57. A correct output is achieved from a master-slave J-K flip-flop only if its inputs are stable while the:

(a) clock is LOW
(b) slave is transferring
(c) flip-flop is reset
(d) clock is HIGH

Answer
Answer : (d)
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58. The toggle condition in a master-slave J-K flip-flop means that Q and will switch to their ________ state(s) at the ________.

(a) opposite, active clock edge
(b) inverted, positive clock edge
(c) quiescent, negative clock edge
(d) reset, synchronous clock edge

Answer
Answer : (a)
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59. The phenomenon of interpreting unwanted signals on J and K while Cp (clock pulse) is HIGH is called ________.

(a) parity error checking
(b) ones catching
(c) digital discrimination
(d) digital filtering

Answer
Answer : (b)
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60. On a J-K flip-flop, when is the flip-flop in a hold condition?

(a) J = 0, K = 0
(b) J = 1, K = 0
(c) J = 0, K = 1
(d) J = 1, K = 1

Answer
Answer : (a)
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