Bob Camp wrote:
Hi
The only real limit on a Johnson counter is how clever you get making sure
that only one stage is a 1 and all the rest are zeros. There are *lots* of
ways to take care of that, each with it's own set of trade offs.
One problem with a Johnson counter is that it takes many more flipflops
for a given number of states. you get 2N states from N stages.
Compare to a standard binary counter where you get 2^N states from N
stages, or a LFSR, where you get 2^N-1 states.
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