Exercise: Flip Flops And Timers

Questions for: Flip Flops And Timers

A basic S-R flip-flop can be constructed by cross-coupling which basic logic gates?
A:
AND or OR gates
B:
XOR or XNOR gates
C:
NOR or NAND gates
D:
AND or NOR gates
Answer: C
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The 555 timer can be used in which of the following configurations?
A:
astable, monostable
B:
monostable, bistable
C:
astable, toggled
D:
bistable, tristable
Answer: A
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When both inputs of a J-K flip-flop cycle, the output will:
A:
be invalid
B:
not change
C:
change
D:
toggle
Answer: B
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Which of the following is correct for a gated D-type flip-flop?
A:
The Q output is either SET or RESET as soon as the D input goes HIGH or LOW.
B:
The output complement follows the input when enabled.
C:
Only one of the inputs can be HIGH at a time.
D:
The output toggles if one of the inputs is held HIGH.
Answer: A
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