Big 7 seg LED display


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  1. #29
    Join Date
    Jun 2006
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    Bangalore, India
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    Cool

    Zhao Hui and mdaweb, here is the schematic.
    The display should be a common anode display.
    The 9.6v input shown in the schematic should not exceed the display max segment voltage.
    I have shown the connection only for the 'a' segment. The patern just has to be repeated for the rest of the segments.

    I have been using this circuit for some time now. It works great.

    But the operating logic is a bit different.
    Logic 1 on both p.1 and p.2 will turn segment 'a' on.
    p.1=1 and p.2=1 --> seg'a' on
    p.1=1 and p.2=0 --> seg'a' off
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    Last edited by shahidali55; - 4th June 2007 at 19:06.

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