MOD 32 even and odd counter using IC 7473

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

  1. penotskie

    Thread Starter New Member

    Oct 6, 2007
    7
    0
    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...
     
  2. techroomt

    Senior Member

    May 19, 2004
    198
    1
    i'm not sure what you are looking for. a counter made of flip flops, ic's, gates? what have you so far?
     
  3. penotskie

    Thread Starter New Member

    Oct 6, 2007
    7
    0
    Do you have a diagram there? any kind of IC's, gates that can count even numbers...
     
  4. penotskie

    Thread Starter New Member

    Oct 6, 2007
    7
    0
    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. penotskie

    Thread Starter New Member

    Oct 6, 2007
    7
    0
    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...
     
  6. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    212
    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
     
  7. penotskie

    Thread Starter New Member

    Oct 6, 2007
    7
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    hmm but i need 5bit binary counter... is a decoder needed for 5bit?
     
  8. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    212
    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
     
  9. penotskie

    Thread Starter New Member

    Oct 6, 2007
    7
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    Do you have a diagram? because im a beginner with this counter.. i uses workbench..
     
  10. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    212
    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
     
  11. penotskie

    Thread Starter New Member

    Oct 6, 2007
    7
    0
    Ok thanks.. I also need a diagram so that i can constract it in the workbench,, do you have a diagram for 5bit counter?
     
  12. mrmeval

    Distinguished Member

    Jun 30, 2006
    833
    2
    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.

     
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