Exercise: Counters

Questions for: Counters

A seven-segment, common-anode LED display is designed for:
A:
all cathodes to be wired together
B:
one common LED
C:
a HIGH to turn off each segment
D:
disorientation of segment modules
Answer: C
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The terminal count of a typical modulus-10 binary counter is ________.
A:
0000
B:
1010
C:
1001
D:
1111
Answer: C
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How many flip-flops are required to construct a decade counter?
A:
10
B:
8
C:
5
D:
4
Answer: D
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The circuit given below has no output on Q1 when examined with an oscilloscope. All J-K inputs are HIGH, the CLK signal is present, and the Q0 is toggling. The C input of FF1 is a constant LOW. What could be causing the problem?

A:
The Q0 output should be connected to the J input of FF1.
B:
The output of FF0 may be shorted to ground.
C:
The input of FF1 may be shorted to ground.
D:
Either the output of FF0 or the input of FF1 may be shorted to ground.
Answer: D
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A BCD counter is a ________.
A:
binary counter
B:
full-modulus counter
C:
decade counter
D:
divide-by-10 counter
Answer: C
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