#16 Oscillation in simple JK Flip Flop

[Sergey Dubinets]

1. Disable Simulation
2. Reset Simulation
3. Enable Simulation
4. Repeat again and again.

Eventually (in 5 attempts in average) you would have oscillation.
I attaching image of Flip Flop with oscillation in it.

[Sergey Dubinets]

[Sergey Dubinets]

Logged In: YES
user_id=1989698
Originator: YES

Submitted into wrong list.
Should be a bug, not feature request.

[Carl Burch]

This is a natural consequence of having a computer simulate this circuit. In real life, this circuit would would also have an oscillation, but variations in signal time lead to the circuit eventually settling to a reasonable state. But Logisim doesn't have these physical variations, and so it gets stuck in indefinite oscillation. My fix was to change your circuit design by adding a "Buffer" between the top left two NAND gates in the "JK bb" subcircuit.