21 LED counter

Discussion in 'The Projects Forum' started by ricker24, Apr 14, 2011.

  1. ricker24

    Thread Starter Member

    Mar 5, 2011
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    0
    Hello, I am working on a score counter using 21 single LED's. I found this picture of how to cascade 3 4017's to produce 25 outputs but can not seem to get it to work. Can someone take a look at it and see if they can see anything wrong with it? Thanks.
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,766
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