Exercise: Counters

Questions for: Counters

A J-K flip-flop is reset and must stay reset after the clock pulse. This transition requires that ________.
A:
J and K inputs must both = 0
B:
J must be 0, K doesn't matter
C:
J doesn't matter, K must = 0
D:
J must be 0 and K must be 1
Answer: B
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The technique used by one-shots to respond to an edge rather than a level is called ________.
A:
level management
B:
edge triggering
C:
trigger input
D:
edge trapping
Answer: A
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________ counters are often used whenever pulses are to be counted and the results displayed in decimal.
A:
Synchronous
B:
Bean
C:
Decade
D:
BCD
Answer: D
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In general, when using a scope to troubleshoot digital systems the instrument should be triggered by ________.
A:
the A channel or channel 1
B:
the vertical input mode, when using more than one channel
C:
the system clock
D:
line sync, in order to observe troublesome power line glitches
Answer: C
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The MOD-10 counter is also referred to as a ________ counter.
A:
decade
B:
strobing
C:
BCD
D:
circuit
Answer: A
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