# 12hr jk flip design

Discussion in 'Homework Help' started by Ndrew, Mar 31, 2014.

1. ### Ndrew Thread Starter New Member

Mar 31, 2014
3
0
Need help with a counter for a jk flip flop thats uses a 12hr clock counter for the hours and minutes only. can someone show me the design of this plan starting with the truth table to the actual circuits design.

2. ### tshuck Well-Known Member

Oct 18, 2012
3,531
675
This sounds like a homework problem.

In that case, you need to show your work.

In any case, you need to put some effort into researching and understanding how to approach your question and make that evident to those you want help from.

3. ### Ndrew Thread Starter New Member

Mar 31, 2014
3
0
i know how to set up the truth table only problem is the design of the circuit to let start from 6am to 10pm.

4. ### Ndrew Thread Starter New Member

Mar 31, 2014
3
0
Need help with a counter for a jk flip flop thats uses a 12hr clock counter for the hours and minutes only. can someone show me the design of this plan starting with the truth table to the actual circuits design

0000
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
0000

Sequence A B C D Ja Ka Jb Kb Jc Kc Jd Kd
0 0 0 0 0 0 X 0 X 0 X 1 X
1 0 0 0 1 0 X 0 X 1 X X 1
2 0 0 1 0 0 X 0 X X 0 1 X
3 0 0 1 1 0 X 1 X X 1 X 1
4 0 1 0 0 0 X X 0 0 X 1 X
5 0 1 0 1 0 X X 0 1 X X 1
6 0 1 1 0 0 X X 0 X 0 1 X
7 0 1 1 1 1 X X 1 X 1 X 1
8 1 0 0 0 X 0 0 X 0 X 1 X
9 1 0 0 1 X 0 0 X 1 X X 1
10 1 0 1 0 X 0 0 X X 0 1 X
11 1 0 1 1 X 0 1 X X 1 X 1

Can someone check if what i'm doing so far is correct and i don't know how to implement the k-maps to draw the circuit.

5. ### Dodgydave AAC Fanatic!

Jun 22, 2012
5,167
777
Is this homework, or are you making some gadget?

Oct 18, 2012
3,531
675