any kind soul please help me with my homework...

Discussion in 'Homework Help' started by 4002_mjnj, Jul 1, 2011.

  1. 4002_mjnj

    Thread Starter New Member

    Jul 1, 2011
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    Your assignment is to do a paper design of an octal-to-7-segment common cathode decoder
    for digits 0, 2, 3, 5, 6 and 7 using the least possible number of NAND gates. You are to assume
    that only these octal digits are applied to the inputs of the decoder, i.e. combinations for digits 1 and
    4 are never applied

    im using multisim btw ...... can anyone help me with the diagram cause i know nuts bout it......
     
  2. someonesdad

    Senior Member

    Jul 7, 2009
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    The homework service is two forums down on the left... :p
     
  3. 4002_mjnj

    Thread Starter New Member

    Jul 1, 2011
    3
    0
    hi... so i posted in the wrong forum? can you help me move it or something.....?? thanks..
     
  4. JoeJester

    AAC Fanatic!

    Apr 26, 2005
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  5. 4002_mjnj

    Thread Starter New Member

    Jul 1, 2011
    3
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    help needed please .... thanks...
     
  6. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    Please show us your efforts and tell us where you got problems.

    Bertus
     
  7. Wendy

    Moderator

    Mar 24, 2008
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    Basically we will try to answer questions in such a way that you learn. If we just did the homework you would get no benefit from it. So as Bertus says, you have to show us your work first, then explain where you are having problems.
     
  8. JDT

    Well-Known Member

    Feb 12, 2009
    658
    85
    Start by drawing up a truth table.
    Then derive some logic equations.
    Simplify these equations. There are various ways of doing this.
    Karnaugh map is one way.
    Draw circuit.
    Test with simulator.

    Or of course you could Google (but that would be cheating).
     
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