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preset enable

Discussion in 'Electronic Basics' started by Darlapphood, Jan 6, 2006.

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  1. Darlapphood

    Darlapphood Guest

    I have a counter with a two digit seven segment led display. When i tur
    the power on it will display random numbers. How do i get it to displa
    '00' when i turn it on? Thanks.
     
  2. Dan Hollands

    Dan Hollands Guest

    Most counter have a method of resetting or presetting them. Its hard to know
    how to offer advice when you don't say what the chip is .

    Dan
    --
    Dan Hollands
    1120 S Creek Dr
    Webster NY 14580
    585-872-2606

    www.QuickScoreRace.com
     
  3. Rich Grise

    Rich Grise Guest

    You arrange for what's called a "power-on reset". Sometimes, something as
    simple as a resistor and capacitor will work, but usually it takes a
    little more, like a schmitt trigger buffer. What you do is hold the
    counter's "reset" line active (usually low) until the power supply
    stabilizes and the input settles.

    Good Luck!
    Rich
     
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