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+12 votes
The number of flip-flops required to construct a binary modulo $N$ counter is __________
asked in Digital Logic by Veteran (59.6k points)
edited by | 1.2k views

1 Answer

+21 votes
Best answer
Let say we have to Design mod-$8$ counter i.e $000$ to $111$. so we need $3$ bits to represent i.e $3$ $FF$

for Mod $N$

$2^x = N$

$x =$ ceiling $(log_2N)$
answered by Veteran (55.2k points)
edited by
I have a doubt: if it is possible to form mod 8 counter using 3 FF. Why do we use Ring Counter or Johnson counter?
to make mod8 ring counter, we will need 8 FFs.
this is for asynchronous counter

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