Note that the outputs feed back to the enabling NAND gates. HyperPhysics***** Electricity and magnetismĪ simplified version of the versatile J-K flip-flop. This toggle application finds extensive use in binary counters. It can also act as a T flip-flop to accomplish toggling action if J and K are tied together. It can perform the functions of the set/reset flip-flop and has the advantage that there are no ambiguous states. If J and K are both high at the clock edge then the output will toggle from one state to the other. If J and K are both low then no change occurs. The inputs are labeled J and K in honor of the inventor of the device, Jack Kilby. If J and K are different then the output Q takes the value of J at the next clock edge. It has the input-following character of the clocked D flip-flop but has two inputs,traditionally labeled J and K. The J-K flip-flop is the most versatile of the basic flip-flops.
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