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    how to turn on LED using 1 square wave

    I want the first LED to gon on with the first pulse, the second LED to go on with the second pulse? voltage applied is 5V.
  2. A

    how to turn on LED using 1 square wave

    Guys, Help me out. I have 1 square wave pulse and want to turn on 2 LEDs one by one. What are the possibilities? please post thanks
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