61. On a master-slave flip-flop, when is the master enabled?
(a) when the gate is LOW
(b) when the gate is HIGH
(c) both of the above
(d) neither of the above
62. If an input is activated by a signal transition, it is ________.
(a) edge-triggered
(b) toggle triggered
(c) clock triggered
(d) noise triggered
63. What does the triangle on the clock input of a J-K flip-flop mean?
(a) level enabled
(b) edg
(c)
(d)
64. With four J-K flip-flops wired as an asynchronous counter, the first output change of divider #4 indicates a count of how many input clock pulses?
(a) 16
(b) 8
(c) 4
(d) 2
65. The output of a gated S-R flip-flop changes only if the:
(a) flip-flop is set
(b) control input data has changed
(c) flip-flop is reset
(d) input data has no change
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