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Figure 4J.—Counter circuit.
WHEN ANSWERING QUESTIONS 4-53
THROUGH 4-55, REFER TO FIGURE 4J.
4-53. Which of the following types of
counters is shown in the figure?
1. Ring
2. Asynchronous
3. Synchronous
4. Decade
4-54. At any given time, how many flip-flops
may be set?
1. Only one
2. Any two
3. Any three
4. All
4-55. Which of the following conditions must
exist to set FF 3?
1. AND gate 1 output HIGH
2. AND gate 2 output HIGH
3. AND gate 3 output LOW
4. Clock input to AND gate 3 LOW
and AND gate 4 output HIGH
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