Some digital system questions. Please help. NAND gates must be used to produce a

Question

Some digital system questions. Please help.

NAND gates must be used to produce a HI true input S-R latch. OR gates must be used to produce a LO true input S-R latch. An enabled (gated) D latch contains a transition detector. Circle the schematic symbol for a negative edge triggered CLOCK input. Circle the schematic symbol for a HIGH true ENABLE input. What does an asynchronous CLEAR input do in a flip-flop? For an J-K flip-flop, what is the minimum time interval that the J and K inputs must be held constant after the clock edge occurs called? For a flip-flop, what is the time interval between the application of an input signal and the resulting change in the output called? For a D flip-flop, what is the minimum time interval that the D input must be held constant before the clock edge occurs called? For a J-K flip-flop with a 20KHz clock at a 25% Duty Cycle and the J & K tied high, cross out the statements below that do not apply. The flip-flop is in the clear mode. The Q output period will be half the clock period. The Q output frequency will be 10KHz. The Q output will be a square wave. The Q output period will be 50 use. The Q output will have a Duty Cycle of 25%. The flip-flop is in the toggle mode. The Q output frequency will be twice the clock frequency. The Q output waveform will not be periodic. Does a J-K flip-flop have an invalid state?

Explanation / Answer

13 false

14 false

15 true

16 first option

17 third option

18 Q=0

19 setup time

20 propagation delay

21 hold time

22 first,second,fourth

23no

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