I'm currently stuck in a question, I'm supposed to make a counter that starts on 3 and goes into the sequence 3-5-8-9-11-13-15
The problem isn't the question itself, but how I make this?
I mean If they gave me another question where the sequence is 1-2-3-2/0-3(supposing that if you hit the reset button, then the counter would go from 0 to 3 then 3-2-3-2...) or even another sequence, how I would make it?

 

hi,
Are there any restrictions on the devices that you can use to build this counter.?
E
Your sequence in Binary
0011
0101
1000
1001
1011
1101
1111

 

There are a few approaches available. Start with a state table, describing what the current state (displayed count) and the next state (next number in the sequence).

Edit: You may find the following useful:

• http://forum.allaboutcircuits.com/threads/submission-another-look-at-synchronous-counters.82082/
• http://forum.allaboutcircuits.com/threads/submission-counter-modulus.82127/

 

hi,
Are there any restrictions on the devices that you can use to build this counter.?
E
Your sequence in Binary
0011
0101
1000
1001
1011
1101
1111

No, I already know how to use Proteus/Isis, but we have to draw them and explain the logic.

There are a few approaches available. Start with a state table, describing what the current state (displayed count) and the next state (next number in the sequence).

Edit: You may find the following useful:

• http://forum.allaboutcircuits.com/threads/submission-another-look-at-synchronous-counters.82082/
• http://forum.allaboutcircuits.com/threads/submission-counter-modulus.82127/

Thanks I'm gonna check them!

 

Your exercise is a classic one on designing a finite state machine.
Read the posts provided by tshuck:

http://forum.allaboutcircuits.com/threads/submission-another-look-at-synchronous-counters.82082/

On AAC tutorials:

http://www.allaboutcircuits.com/vol_4/chpt_11/5.html

I also partially covered this here:

http://forum.allaboutcircuits.com/threads/up-down-decade-counter-using-d-flipflop.58572/

 

I think that I got it
Thanks everyone, this helped me a lot.

 

I think that I got it
Thanks everyone, this helped me a lot.

Good! Glad to hear it!