:Timing Diagram for JK Flip Flop

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SUMMARY

The discussion focuses on the necessity of including the Q bar (NOT Q) output when drawing timing diagrams for JK flip-flops. It is established that while the Q output is essential, the inclusion of Q bar depends on the specific requirements of the assignment. Typically, Q bar is only shown if it will be utilized in subsequent logic. Inputs must always be displayed to ensure they are properly driven.

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teng125
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for j k flip flop,there is a inverse clock,Q(output) , Q bar(knot) output ,J and K
when drawing the timing diagram,is it necessary to state the output of the Q bar (knot) or only the Q (output) is enough??


pls help
 
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teng125 said:
when drawing the timing diagram,is it necessary to state the output of the Q bar (knot) or only the Q (output) is enough??

that depends on your assignment requirement.
 
teng125 said:
for j k flip flop,there is a inverse clock,Q(output) , Q bar(knot) output ,J and K
when drawing the timing diagram,is it necessary to state the output of the Q bar (knot) or only the Q (output) is enough??
just a clarification.. You may state the negation of Q as just Q bar .. We understand it to mean NOT Q .. Your spelling knot is a homonym. It sounds like NOT but has a different meaning.
 
You would generally only show Q- in your timing diagram if you were going to use it for something later in the logic. You wouldn't usually show outputs that are unused. You do need to show all inputs, however, since you need to be sure to drive them with something.
 

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