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- Question
When a J-K flip-flop is used in a circuit, we only have to consider the level at J and K at the active clock edge to know the states of the outputs.
Options- A. True
- B. False
- Correct Answer
- False
- 1. An asynchronous counter differs from a synchronous counter in the method of clocking.
Options- A. True
- B. False Discuss
- 2. Phototransistors have varying resistance from collector to emitter, depending on how much light strikes them.
Options- A. True
- B. False Discuss
- 3. Counters are generally decoded in order to determine their count state.
Options- A. True
- B. False Discuss
- 4. A J-K flip-flop excitation table lists the present state, the next state, and the J and K levels required to produce each transition.
Options- A. True
- B. False Discuss
- 5. Shift registers are used to store and transfer data.
Options- A. True
- B. False Discuss
- 6. The MOD number of a Johnson counter will always be equal to one-half the number of flip-flops in the counter.
Options- A. True
- B. False Discuss
- 7. In a synchronous counter, each state is clocked by the same pulse.
Options- A. True
- B. False Discuss
- 8. To design a divide-by-200 counter using synchronous counters, two 4-bit counters could be cascaded together to form an 8-bit counter.
Options- A. True
- B. False Discuss
- 9. Another term used to describe up/down counters is bidirectional.
Options- A. True
- B. False Discuss
- 10. A state diagram is a table of states.
Options- A. True
- B. False Discuss
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