In counters, from which Flip Flop should I start my initial states?

Thread Starter

Devika B S

Joined Mar 8, 2017
144
For example, consider the following Johnson counter,
counter.jpg Assuming that my initial state is 00, Should I start from the first flip flop or the second flip flop? How do i know and decide which flip flop to start from? The final states vary depending upon which flip flop I start.
 

ericgibbs

Joined Jan 29, 2010
8,748
hi,
In most counters it is required that a Reset circuit sets the initial counter state.
If not, just powering up, the counter state would be indeterminate.
E
 

Thread Starter

Devika B S

Joined Mar 8, 2017
144
Even after resetting it, there is the problem of (when writing the states table) of whether first it's flip flop 1 or flip flop 2. Both are interdependent on each other. If I start from flip flop1, write flip flop 2's state based upon that, it's different from starting from flip flop 2 and then 1.
 
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