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Simple circuit completion counter

  1. Jul 20, 2010 #1
    I need a device with something like a 4-digit LCD or LED display which counts the amount of times its input and output contacts close. Basically, 1 count for each completed circuit. I was told things like these exist and are cheap, but don't know what to call it.

    Thanks in advance!
  2. jcsd
  3. Jul 22, 2010 #2
    You should take a look at the 4029 counter IC.
    Also you might like to see this website that shows http://www.aaroncake.net/circuits/counter.asp" [Broken]
    Last edited by a moderator: May 4, 2017
  4. Jul 23, 2010 #3


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    Staff: Mentor

    Here are the results of doing a Google Images search on LED Counter Module:


  5. Jul 23, 2010 #4
  6. Jul 23, 2010 #5


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    Gold Member

    Or, if there is a controller / processor in the loop you can save a little hardware and debounce in the firmware/software:

    Last edited: Jul 23, 2010
  7. Jul 23, 2010 #6
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