Help modifying SR Latch to JK Latch

Hi,

I am trying to convert SR latch to JK latch. I have looked up several
places on the web and I don't understand some of the transition states
in JK that corresponds to SR latch. When SR=11, the Q(t+1) in SR are
not determined or not defined. So when you draw K-maps to determine
what JK input will be fed to SR latch for the modification the
corresponding state of SR does Q(t) -> Q(t+1) = 1 to dont care. My
question is what do you assume dont care to be in this case.

Thanks,

A

 

You would need to add gates in front of the SR to detect the 11 condition
and based on the state of the SR outputs enable the enable to the corect
input to toggle the flip flop


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Dan Hollands
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www.QuickScoreRace.com

 

JK simply allows toggling of output when
when JK are both 1
the RS type are undefined which really means
i gess it would not respond to any
change when RS = 1 and Clk goes 1. etc..
i guess it was just remain at the last
value.
i don't know how you would combine the
actions of JK to RS with out effecting other
operations.
you could tie back the Q's to the RS inputs ?