What is Race-around problem? How can you rectify it?
Answers were Sorted based on User's Feedback
Answer / abc
race around condition nt only takes place in jk nly...for
high i/ps but wid sr f/f 2 for low i/ps..which results in
toggling of output...in both case master slave f/f can be
used
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Answer / harish
the 19th answer is the most accurate answer among all ...
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Answer / sonali tomar
well as far as race around condition is concerned, almost above answers are correct race around condition is same as discribed above ...
but wht actually going with jk ff .will anybody tell me?
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Answer / vipul dhongade
When j=1 and k=1 occours then output goes to toggle,
b'cause of propagation delay in NAND or NOR gate. There are
different propagation delay for different gates. And we can
avoid it by using M/S flip-flop.
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Answer / prashant chaudhary
race around condition occurs in JK flip flop when both the
inputs are high, then there is race between 0 and 1 to
reach the output i.e togelling between 0 and 1 occurs due
to propagation delay. this can be removed using edge
triggered flip flops or by using master slave JK flip flop.
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Answer / j.janmejaya jena
in case of jk flip flop i/p is connected to the o/p,so what
ever may be the changes occcures in o/p that affect the i/p
of jk ff .so to reduce it we use master slave ff
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Answer / ladpriyanka
In J-K flipflop,for the input states J=K=1,if the clock
pulse width is greater then the propagation delay of the
NAND gate then it will cause continuous transitions of the
flipflop output.This is called Race around condition.
To rectify this problem,the clock pulse width should keep
less then the propagation delay of the NAND gate.This
restriction on the pulse width can be eliminated by
constructing
(i)Master-Slave flipflop
(ii)Edge-triggered flipflop
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Answer / m.hemanth kumar
race around occurs only in latch but not in flip flop.the on time for a latch is high,so while applying the inputs as 1 and 1 the output keeps on toggling.and race around can be eliminated by using a flip flop as it is an edge triggered one.
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Answer / kalpna ajimal
when j=k=1 in jk flip flop then the race arround condition
will occure.This can be remove using master slave flip flop.
| Is This Answer Correct ? | 3 Yes | 4 No |
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