help please:(

Discussion in 'Homework Help' started by lfc1825, Oct 21, 2010.

  1. lfc1825

    Thread Starter New Member

    Oct 21, 2010
    4
    0
    hi everyone i hope i am posting in the right area with my problem anyway here it goes i have been given a problem were i have too
    "
    Build a circuit using only AND, OR, NOT, NAND and NOR logic gates to simulate the counter. You should use 3 sequencers or bit generators in your circuit as input. Draw your circuit using Digital Works 95. The numbers should change automatically without any user input. HINT: Construct a separate circuit for each segment from the truth table you have constructed. Then redraw the circuit to combine the separate circuits to form one complete circuit."
    i also have to create an extended truth table for the finished circuit including all gates in the circuit. and also i have to do the Boolean equation for each segment of the counter.

    right my problem is i have no idea were to start with this as i never done anything like this before can some kind soul please help me out by pointing me in the right direction on how to do this? p.s i know that you cant do the work for me as this is cheating all i am asking for is some help on how to understand it all


    thanks everyone
     
  2. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    This project was given to you from out of the blue sky?

    What previous knowledge of logic gates do you have?

    If it is none, I would check your text book for such info.
    If none is to be found, read this section from our eBook:
    http://www.allaboutcircuits.com/vol_4/chpt_11/index.html


    Also, this video will show you how they work together and how to build a counter circuit using logic gates and flip-flops:
    http://www.allaboutcircuits.com/videos/94.html

    Watch all the videos for a quite good education in the topics:
    http://www.allaboutcircuits.com/videos/index.html
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,645
    2,344
  4. lfc1825

    Thread Starter New Member

    Oct 21, 2010
    4
    0
    hi everyone thanks for your replys but am still having real trouble with this i have done my equations and i have been told they are right but i still don't know what gates to use to build my circuit in digitworks?can anyone please helppppp here are my equations......

     
  5. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    3,775
    931
    My suggestion would be to start with NAND gates and only use other gate types if the logic would be too awkward to perform with NAND only.

    Hint: ALL logic gates can be modeled using only NAND gates.

    If you have only one type of gate in the circuit it will make creating the truth table much simpler too.
     
  6. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    3,775
    931
    perhaps this will help get you started

    [​IMG]
     
  7. lfc1825

    Thread Starter New Member

    Oct 21, 2010
    4
    0
    thanks i have made a start but still having trouble heres what i have so far:confused: ahh i give up:( any ideas?
     
    • 380.pdf
      File size:
      136.9 KB
      Views:
      18
  8. lfc1825

    Thread Starter New Member

    Oct 21, 2010
    4
    0
    thanks everyone problem now solved:D:D:D
     
Loading...