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Pulse doubler? — Parallax Forums

Pulse doubler?

ArchiverArchiver Posts: 46,084
edited 2002-11-04 15:41 in General Discussion
Hey guys I'm a noob, and I have a totally bs2 unrelated question. Part
of a circuit that I have has 2 alternately blinking LED's. (Like a RR
crossing light). I want to have a LED numerical display show the number
of times that both lights have blinked. And I'm a little confused as
to how to wire up a single counter IC to tally them up. Can I combine
the pulses from the output? I'm just generally confused as to what to
do. Any help would be nice.

Thanks,
Ryan Daniels


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Comments

  • ArchiverArchiver Posts: 46,084
    edited 2002-11-04 15:41
    If the lights will never be on at the same time you can put the signal that
    drives the LED's into an OR gate, then the output of the OR gate to the clock
    input of your counter.

    If you need more detailed information, you can FAX me a portion of your
    schematic for the LED's and I can FAX back to you the required hook ups.


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