Designing counters using J-K, S-R, and T flip flops?

[sirclash]

I'm having a problem determining the upper and lower halves of a karnaugh map when trying to design a counter using flip flops. So where I am at is, taking a 4 bit table with the next state included, putting it into a next state map and then in the J-K, and S-R flip flops tables. I know the rules for converting each table into separate J and K maps(J_a,J_b,J_c,J_d, and K_a,K_b,K_c,K_d maps) however I am stuck on determining how the upper and lowers halves of each map are determined. Are the all the same based on the significance of the bit? or is each flip flop different? Please explain.

 

[berkeman]

I'm having a problem determining the upper and lower halves of a karnaugh map when trying to design a counter using flip flops. So where I am at is, taking a 4 bit table with the next state included, putting it into a next state map and then in the J-K, and S-R flip flops tables. I know the rules for converting each table into separate J and K maps(J_a,J_b,J_c,J_d, and K_a,K_b,K_c,K_d maps) however I am stuck on determining how the upper and lowers halves of each map are determined. Are the all the same based on the significance of the bit? or is each flip flop different? Please explain.

Could you post an example problem with your work so far? That would be helpful in trying to figure out where the confusion is. Thanks.