A JK flip-flop has how many possible output states?
2025
A JK flip-flop has how many possible output states?
Answer: B. 2 — ConceptA flip-flop is a bistable sequential-logic element. A single stored bit can take either of the two binary values, 0 or 1, so its output has two stable…
- A.
1
- B.
2
- C.
3
- D.
4
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Correct answer: B
Concept
A flip-flop is a bistable sequential-logic element. A single stored bit can take either of the two binary values, 0 or 1, so its output has two stable logical states.
Application
A JK flip-flop stores one bit at output Q. Therefore Q can be 0 or 1, giving two possible output states.
Contrast
The value 1 describes a monostable count, not the state count of a one-bit bistable element.
The value 3 describes a ternary state space, whereas a single binary output uses two values.
The value 4 would require two independent binary state variables because 2 × 2 = 4 combinations.
Cross-check
The characteristic table of a JK flip-flop lists next-state values Q(next) only as 0 or 1; no third or fourth output state occurs. Hence the number of possible output states is 2.