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Convert Leds to 7 Segment Display

Discussion in 'Electronic Design' started by -=Almazick=-, Aug 12, 2003.

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  1. -=Almazick=-

    -=Almazick=- Guest

    I would like to convert 6 leds to 7 segment display. What is the best way to
    do it? The way it works right now that LED's lit up in a continuous style
    (for example: 1st will light up the 1st LED, 2nd will light up the 1st and
    2nd LED, 3rd will light up the 1st 2nd and 3rd LED's, etc. etc) I got 7
    negative inputs and 1 positive signal as you can see from the picture that
    every led get grounded to lit up.

    http://www.electro-tech-online.com/viewtopic.php?t=2786&start=0&postdays=0&p
    ostorder=asc&highlight=
     
  2. Ken Taylor

    Ken Taylor Guest

    What is it you are trying to achieve? Do you want to have the 7-segment
    display indicate the numbers 1,2,3, etc or just light up the segments in
    order? If you want to indicate the numbers, you need a decimal-to-seven
    segment priority encoder.

    On the assumption that you may be doing this for a car battery indicator,
    look at:
    http://www.electronic-circuits-diagrams.com/carsimages/carsckt1.shtml

    It'll give you ideas anyway if this isn't exactly the application.

    Ken
     
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