HW$10$ for FSM

$6\mathrm{.}23$ Design a modulo$-6$ counter, which counts in the sequence $0,1,2,3,4,5,0,1,$dots The counter counts the clock pulses if its enable input, $w,$ is equal to I. Use D flip$-$flops in your circuit.

$6\mathrm{.}24$ Repeat Problem $6\mathrm{.}23$ using JK flip$-$flops.

$6\mathrm{.}25$ Repeat Problem $6\mathrm{.}23$ using T flip$-$flops.