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...
  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?
  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...
  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...
  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...
  6. hgmjr

    hgmjr Moderator Staff Member

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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
  7. penotskie

    penotskie Thread Starter New Member

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

    hgmjr Moderator Staff Member

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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
  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..
  10. hgmjr

    hgmjr Moderator Staff Member

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

    Code:
     
    Output of 4-bit counter would look like this:
     
    BBBB DEC
    3210
    ----
    0000  0
    0001  1
    0010  2
    0011  3
    0100  4
    ...
    1100 12
    1101 13
    1110 14
    1111 15
     
    The next step would be to append a constant "0" and 
    promote the four outputs from the 4-bit counter.
     
    BBBB B  DEC
    4321 0
    ------
    0000 0  0
    0001 0  2
    0010 0  4
    0011 0  6
    0100 0  8
    ......
    1100 0 24
    1101 0 26
    1110 0 28
    1111 0 30
     
    
    Does that make it clearer?

    hgmjr
  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?
  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.

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