Answer Posted / ishwar

Let us consider the example of a Flip Flop(or a binary),
because that's the only place I know where Race Around is
observed...

Let us consider a JK Flip Flop (Hereby called FF). The
excitation table of this FF is as follows :


J K Qn+1

0 0 Qn

0 1 0

1 0 1

1 1 Qn Bar ~ Complement of Qn




Let us say that a clock of certain frequency is fed to the
FF, and consider the case of J=K=1, and the propagation
delay of FF is very very less than the clock pulse time
Then the FF continues complementing the output an
unpredictable number of times, thus leading to anomaly in
the final output after the pulse time of the clock is
completed

we can rectify this problem by using master-slave ff
where one j-k ff act as a master & other act as a slave.

Explain rf?

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