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Flip-Flops and Timers
When both inputs of a J-K flip-flop cycle, the output will:
be invalid
not change
change
toggle
Correct Answer:
not change
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Flip-Flops and Timers
Multivibrators must be level-triggered.
When using master-slave flip-flops, the data is entered into the flip-flop on the leading edge of the clock, but the output does not change until the trailing edge of the clock.
Pulse-triggered flip-flops are identified by a bubble on the Q output terminal.
Edge-triggered flip-flops can be identified by the triangle on the clock input.
The 555 timer can be used in either the bistable mode or the monostable mode.
A one-shot is a special type of multivibrator, which must be triggered to produce each output pulse.
A D-type flip-flop is constructed by connecting an inverter between the Set and Clock terminals.
When the S and the R inputs are both HIGH the output of an S-R NOR latch will be unpredictable.
J-K flip-flops are often used as switch debouncers.
The J-K flip-flop eliminates the RACE state when both the J and K inputs are HIGH.
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