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Discussion in 'Electronics Homework Help' started by ValleyJim, Sep 23, 2012.

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  1. ValleyJim


    Apr 18, 2012
    Hi all

    This is sort of a homework problem and sort of not....... I am in the first semester and we were given a simple project to show digits 0 - 9 driven by a 74192N. That was accomplished very quickly.

    However, I wanted to try to get the count from 0 - 99 so I am trying to add a second 74192 and another LED. I can get where both count from 0 - 9 but I cannot get the count to go from 0 - 99. Each LED shows 0 - 9 but it is not a true count.

    I checked the datasheets but cannot find where I need to connect the second one to get this done.

    Any suggestions will be greatly appreciated.
  2. MrEE


    Apr 13, 2012
    Have you checked the carry bit? Read the datasheet again, it is explained there
  3. ValleyJim


    Apr 18, 2012
    How did I overlook that?!? Thanks for the quick reply. That was the answer....
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