Exercise: Sequential Logic Circuits

Questions for: Sequential Logic Circuits

Mod-6 and mod-12 counters are most commonly used in:
A:
frequency counters
B:
multiplexed displays
C:
digital clocks
D:
power consumption meters
Answer: C
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What happens to the parallel output word in an asynchronous binary down counter whenever a clock pulse occurs?
A:
The output word decreases by 1.
B:
The output word decreases by 2.
C:
The output word increases by 1.
D:
The output word increases by 2.
Answer: A
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What is a shift register that will accept a parallel input and can shift data left or right called?
A:
tri-state
B:
end around
C:
bidirectional universal
D:
conversion
Answer: C
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What is meant by parallel-loading the register?
A:
Shifting the data in all flip-flops simultaneously
B:
Loading data in two of the flip-flops
C:
Loading data in all four flip-flops at the same time
D:
Momentarily disabling the synchronous SET and RESET inputs
Answer: C
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A comparison between ring and johnson counters indicates that:
A:
a ring counter has fewer flip-flops but requires more decoding circuitry
B:
a ring counter has an inverted feedback path
C:
a johnson counter has more flip-flops but less decoding circuitry
D:
a johnson counter has an inverted feedback path
Answer: D
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