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How do logic circuits work?

  1. Apr 7, 2013 #1
    I know that if 1 and 0 goes through an OR gate, it gives 1. But how does the 1 come? how it works?
    thanks
     
  2. jcsd
  3. Apr 7, 2013 #2

    mfb

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    Staff: Mentor

    Usually, logic gates work with voltage - 1 is represented by a high voltage, 0 as low voltage. For the implementation of electronic logic gates, see the various Wikipedia articles, like this one.
     
  4. Apr 7, 2013 #3
    yeah I know that they work with logic gates. But the problem is how does an OR gate know to output 1, if 1 and 0 was given as outputs
     
  5. Apr 7, 2013 #4

    trollcast

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    The most basic logic gates can be created with transistors wired up in various different ways.

    For a pretty quick run through of the different configurations for each gate click here
     
  6. Apr 7, 2013 #5

    mfb

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    That is explained in the link I posted.
    Now you have two different pages with gate implementations linked in this thread.
     
  7. Apr 7, 2013 #6
    Thanks
     
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