If J = K (J and K are shorted) in a JK flip-flop, what circuit is made

Electrical Engineering XYZ MCQs

If J = K (J and K are shorted) in a JK flip-flop, what circuit is made:

1. T flip-flop
2. SR flip-flop
3. K flip-flop
4. Shorted JK flip-flop

Correct answer: 1. T flip-flop

Explanation: In a JK flip-flop, when both the J and K inputs are shorted together (J = K), it essentially creates a T flip-flop behavior.

Here’s why:

• In a JK flip-flop:
  • When J = K = 0, the flip-flop remains in its current state (no change).
  • When J = K = 1, the flip-flop toggles, switching its state (from 0 to 1, or from 1 to 0).
• In a T flip-flop:
  • When T = 0, the flip-flop remains in its current state (no change).
  • When T = 1, the flip-flop toggles, switching its state.

So, when J = K, it effectively makes the JK flip-flop operate like a T flip-flop. This behavior occurs because both inputs will always be the same, toggling the state when they are both high (1) and maintaining the state when they are both low (0).