MOD 32 even and odd counter using IC 7473

Discussion in 'Homework Help' started by penotskie, Oct 6, 2007.

  1. penotskie

    penotskie Thread Starter New Member

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    Can u help my pls? only the diagram for MOD 32 even counter and odd counter.. pls send me the diagram to my email add penotskie@yahoo.com...
     
    #1
  2. techroomt

    techroomt Senior Member

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    i'm not sure what you are looking for. a counter made of flip flops, ic's, gates? what have you so far?
     
    #2
  3. penotskie

    penotskie Thread Starter New Member

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    Do you have a diagram there? any kind of IC's, gates that can count even numbers...
     
    #3
  4. penotskie

    penotskie Thread Starter New Member

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    Pls help me.. diagram of a counter using flipflop or ic's that can count up to 31 and the output would be even numbers...
     
    #4
  5. penotskie

    penotskie Thread Starter New Member

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    Pls help me.. diagram of a counter using flipflop or ic's that can count up to 31 and the output would be even numbers...
     
    #5
  6. hgmjr

    hgmjr Moderator

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    How about if you just build a 0 to 15 binary counter and then always force the least significant bit (Bit0) of the output to be a zero. Bit0 from the 4-bit counter will be Bit1 of the output, Bit1 of the 4-bit counter will be the Bit2 of the output, Bit2 of the 4-bit counter will be Bit3 of the output and Bit3 of the 4-bit counter will be Bit4 of the output.

    hgmjr
     
    #6
  7. penotskie

    penotskie Thread Starter New Member

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    hmm but i need 5bit binary counter... is a decoder needed for 5bit?
     
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  8. hgmjr

    hgmjr Moderator

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    This is 5 bits. Bit0 of the output is always the value 0. This insures that the output is even. Then the four bits from the 4-bit counter make up bits 1 thru 4 of the output.

    hgmjr
     
    #8
  9. penotskie

    penotskie Thread Starter New Member

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    Do you have a diagram? because im a beginner with this counter.. i uses workbench..
     
    #9
  10. hgmjr

    hgmjr Moderator

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    It is really very straightforward. Build a textbook 4-bit counter the output of which would be as follows

    Code ( (Unknown Language)):
    1.  
    2.  
    3. Output of 4-bit counter would look like this:
    4.  
    5. BBBB DEC
    6. 3210
    7. ----
    8. 0000  0
    9. 0001  1
    10. 0010  2
    11. 0011  3
    12. 0100  4
    13. ...
    14. 1100 12
    15. 1101 13
    16. 1110 14
    17. 1111 15
    18.  
    19. The next step would be to append a constant "0" and
    20. promote the four outputs from the 4-bit counter.
    21.  
    22. BBBB B  DEC
    23. 4321 0
    24. ------
    25. 0000 0  0
    26. 0001 0  2
    27. 0010 0  4
    28. 0011 0  6
    29. 0100 0  8
    30. ......
    31. 1100 0 24
    32. 1101 0 26
    33. 1110 0 28
    34. 1111 0 30
    35.  
    36.  
    Does that make it clearer?

    hgmjr
     
    #10
  11. penotskie

    penotskie Thread Starter New Member

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    Ok thanks.. I also need a diagram so that i can constract it in the workbench,, do you have a diagram for 5bit counter?
     
    #11
  12. mrmeval

    mrmeval Distinguished Member

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    A lot of people come here expecting someone to do their homework don't expect a complete response.

    This is available on the main website add more flip-flops, this is a down counter and uses a trick to use less parts so may not be what you need.
    http://www.allaboutcircuits.com/vol_6/chpt_7/8.html

    This has more complex examples.
    http://www.allaboutcircuits.com/vol_4/chpt_11/2.html

    I'd recommend getting a good book on digital electronics from your library, even an older one will do.

     
    #12
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