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Basic Electronic Gates Question

  1. Feb 8, 2012 #1

    Femme_physics

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    Basic Electronic Gates Question....

    1. The problem statement, all variables and given/known data

    Demonstrate, via a proper scheme, how can you realize a gate from type NOT, through a single gate from type NAND with two entries?


    3. The attempt at a solution

    http://img208.imageshack.us/img208/6093/image201202080001.jpg [Broken]

    I got it, right?
     
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Feb 8, 2012 #2

    NascentOxygen

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    Re: Basic Electronic Gates Question....

    Yes, the electronics is right. The translation is a bit awkward:
    Demonstrate how to realize a NOT gate using a two-input NAND gate. :smile:

    You might be able to think of another slightly different way, still using a two-input NAND gate.
     
  4. Feb 8, 2012 #3

    Femme_physics

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    Re: Basic Electronic Gates Question....

    Sorry about the translation, it's hard translating technical stuff sometimes! :) Much appreciated.

    Hmmm, I can't come up with anything...any clues?
     
  5. Feb 8, 2012 #4

    NascentOxygen

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    Re: Basic Electronic Gates Question....

    The scheme you've shown imposes a double load on whatever is supplying signal A. This often is inconsequential, but sometimes it may be undesirable. There is an arrangement that imposes just a single load.
     
  6. Feb 8, 2012 #5

    Femme_physics

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    Re: Basic Electronic Gates Question....

    The problem is that I am asked that the NAND gate has two entries (is that what you mean by load?) so I can't change it to one entry.
     
  7. Feb 8, 2012 #6

    NascentOxygen

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    Re: Basic Electronic Gates Question....

    The NAND gate has two inputs. Each input (in general) requires current and this current has to be supplied from wherever signal A is coming from. By connecting signal A to two inputs of your NAND gate the source of signal A is being asked to supply double the current that it would if you connected to just one input of the NAND gate.
     
  8. Feb 8, 2012 #7

    Ouabache

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    Re: Basic Electronic Gates Question....

    Hi FP :smile:
    I believe what NascentO is trying to get at,
    is something you will also note on the hyperphysics site,
    under NAND gate operations.
    (You can also find it on wikipedia but hyperphysics is a very fine reference).
     
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