All About Circuits Forum  

Go Back   All About Circuits Forum > Electronics Forums > Homework Help

Notices

Homework Help Stuck on a textbook question or coursework? Cramming for a test and need help understanding something? Post your questions and attempts here and let others help.

Reply   Post New Thread
 
Thread Tools Display Modes
  #1  
Old 01-18-2010, 09:06 PM
slider203 slider203 is offline
New Member
 
Join Date: Jan 2010
Location: Canada
Posts: 2
Unhappy Design a counter using JK flip flops

Hello I am doing the grade 11 computer engeneering course and I was doing my homework when I got stuck on a question that says "Design a counter using J-K flip flops that will count in the following sequence: 0,2,5,1,3" would some one please help a newbie like my self make this counter. I have been trying for hours and still dont know how to do it.
Thanks any help is apperciated

EDIT: beenthere first we have to create a truth table (I did that)

t t+1
Q2 Q1 Q0 Q2 Q1 Q0
0 0 0 0 1 0
0 1 0 1 0 1
1 0 1 0 0 1
0 0 1 0 1 1
1 1 1 0 0 0

then we had 2 draw truth tables did that too.
but then we have to make the truth tables into a diagram thats were Im getting stuck...this is what the diagram looks like:
____________ __________ ___________
|J2 Q2 | |J1 Q1| |J0 Q0|
| | | | | |
O>CLK | O>CLK | O>CLK |
| _ | | _ | | _ |
| K2 Q2| |K1 Q1 | |K0 Q0 |
--------------- ------------- -------------
(I know its a bit rough but you get the idea..I hope)

Last edited by slider203; 01-20-2010 at 01:48 AM.
Reply With Quote
  #2  
Old 01-19-2010, 02:17 PM
beenthere's Avatar
beenthere beenthere is offline
Senior Member
 
Join Date: Apr 2004
Location: Missouri, USA (GMT -6)
Posts: 15,815
Blog Entries: 10
Default

Can you show us your work? We may be able to see where you got stuck.
__________________
First comes the hardware, then the software.
Reply With Quote
  #3  
Old 01-19-2010, 04:59 PM
t06afre's Avatar
t06afre t06afre is offline
Senior Member
 
Join Date: May 2009
Posts: 5,939
Default

try Google and the term karnaugh synchronus counter. This should get you started
Reply With Quote
  #4  
Old 01-19-2010, 06:48 PM
knowitall knowitall is offline
Junior Member
 
Join Date: Jan 2010
Location: Ronan Montana U.S.A.
Posts: 17
Default

Are you allowed to use any additional componants, like diodes or decoders,or a reset switch?
Reply With Quote
  #5  
Old 01-20-2010, 01:31 AM
slider203 slider203 is offline
New Member
 
Join Date: Jan 2010
Location: Canada
Posts: 2
Default

we can use a reset switch also we are using the chips 7490, 7992, 7493
Reply With Quote
  #6  
Old 01-20-2010, 01:39 AM
beenthere's Avatar
beenthere beenthere is offline
Senior Member
 
Join Date: Apr 2004
Location: Missouri, USA (GMT -6)
Posts: 15,815
Blog Entries: 10
Default

Get the data sheets for those chips - you might be surprised to see what they are. Google "sn7490", sn7492, sn7493" and follow the links for the data sheets.
__________________
First comes the hardware, then the software.
Reply With Quote
Reply   Post New Thread

Tags
, , ,


Related Site Pages
Section Title
Video Lecture JK Flip-Flop - Digital
Worksheet Counters
Worksheet Flip-flop circuits
Video Lecture Counters - Digital
Video Lecture Sequential Logic - Digital
Textbook Ring counters : Shift Registers
Textbook Finite State Machines : Sequential Circuits Counters
Textbook Asynchronous counters : Sequential Circuits Counters
Textbook Binary count sequence : Sequential Circuits Counters
Textbook Synchronous counters : Sequential Circuits Counters


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help: 555 to counter to mux to J-K flip flop th1alb General Electronics Chat 2 12-01-2009 08:00 PM
Up/down counter with master slave flip flops saltykarp General Electronics Chat 0 11-10-2008 08:05 PM
Designing a 3-bit counter with D flip flops Mearyk81 Homework Help 4 05-31-2008 10:44 PM
3 minute timer circuit using 74LS163 counter and flip flops circuit help zeneez Homework Help 8 03-22-2008 03:16 PM
4bit synchronous counter using D Flip Flops dankipiti Homework Help 1 02-14-2005 08:21 AM

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 07:48 AM.


User-posted content, unless source quoted, is licensed under a Creative Commons Public Domain License.
Powered by vBulletin
Copyright ©2000 - 2014, vBulletin Solutions, Inc.