Exercise: Flip Flops And Timers

Questions for: Flip Flops And Timers

An S-R NAND latch with both of its inputs LOW has an output that is _____________.
A:
unpredictable
B:
floating
C:
HIGH
D:
LOW
Answer: A
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An S-R flip-flop can be triggered by ______, ______, or ________.
A:
HIGHs, LOWs, PRESETs
B:
edges, levels, pulses
C:
HIGHs, LOWs, CLEARs
D:
SETs, RESETs, HIGHs
Answer: B
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Edge-triggered flip-flops must have _________.
A:
very fast response times
B:
at least two inputs to handle rising and falling edges
C:
a positive-transition pulse generator
D:
a negative-transition pulse generator
Answer: C
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The S-R, D-type, and J-K flip-flops are all examples of _________________.
A:
astable multivibrators
B:
bistable multivibrators
C:
monostable multivibrators
D:
tristable multivibrators
Answer: B
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A retriggerable one-shot has a pulse width of 10 ms; 3 ms after being triggered, another trigger pulse is applied. The resulting output pulse will be _________ ms.
A:
3
B:
7
C:
10
D:
13
Answer: D
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