Finite state machines: implementing
Step 3: Use the flip-flop excitation tables
 to determine D and T
What value for T do we need to get
state 0 from state 0?
What value for T do we need to get
state 1 from state 0?
q1 q0 x q1+ q0+ z1 z0 D1 T0    
0 0 0 1 0 0 1 1 0    
0 0 1 0 1 0 1 0 1
0 1 0 0 1 1 1 0
0 1 1 1 0 1 1 1
1 0 0 0 1 1 1 0
1 0 1 0 0 1 1 0
1 1 0 d d d d d
1 1 1 d d d d d