How to create 4-bit asynchronous counter?

Question

I am new to Multimedia Logic and am trying to create a 4-bit asynchronous counter. I did something like this, but it doesn't work.

I'm not sure if everything is properly connected and if I was using a good clock or flip-flops.

I was expecting that first light will flash on and off every second and last every eight seconds but nothing happens.

Please try to provide a more detailed description than "it doesn't work". What were you expecting and what was the behavior? — devnull, May 11, 2022 at 12:19
@devnull i was expecting that first ligh will flash on and off every second and last every eight second but nothing happens. — carl_799, May 11, 2022 at 12:37
What happens if you connect the LED to the clock input of the first FF? It it doesn't blink you have to check how to enable the clock pulses in the simulator. The JK FFs with both inputs 1 will swap its output state at every clock (at the edge it senses). — devnull, May 11, 2022 at 12:55
Welcome to EE.SE! Multimedia, now that's a term I haven't heard since the nineties! What makes this one multimedia? — winny, May 11, 2022 at 14:37

Antonio51 · Accepted Answer · 2022-05-13 14:16:48Z

0

Here is a supplied circuit. From microcap v12.

And it is an animated circuit if you want.

answered May 13, 2022 at 11:10

Antonio51

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