# JK Latches

Discussion in 'Homework Help' started by Volt, May 5, 2009.

1. ### Volt Thread Starter Member

Nov 28, 2008
24
0
Hello,

On a JK flip flop the output Q is high (1) when J = 1 and K = 0

When J = 1 and K= 0 the output toggles...

Does this mean when the toggle occurs does this then mean that Q is high when J = 1 and K= 0?

...or does it just toggle until the next pulse from the clock is reached and then it returns back to it's standard function?

Sorry if that doesn't make sense but my problem is pretty hard to write using words!

Any help would be appreciated!

Thanks

2. ### hgmjr Retired Moderator

Jan 28, 2005
9,030
218
Take a look here in the AAC ebook section on JK Flip/Flops.

hgmjr

3. ### mik3 Senior Member

Feb 4, 2008
4,846
69
The outputs of a JK FF toggle when a clock pulse arrives and if both J and K are high (1).

4. ### Volt Thread Starter Member

Nov 28, 2008
24
0
Thanks for your help but I am still a little unclear, when the output does toggle (when J and K are both 1) does that mean that the output Q will only be high when k =1 and j=0 until the next toggle? or until the next clock pulse?

5. ### vvkannan Active Member

Aug 9, 2008
138
11
Toggle means the switching of the ouput Q from high to low or low to high.
If Q is 0 and now you give a clock pulse with j and k being 1 it goes to high or Q goes to 0 if it was 1 before the clock pulse was applied.

I am not clear about your question.could you try framing it better?