seven segment decoder

Discussion in 'Homework Help' started by Agnishekhar, May 22, 2017.

  1. Agnishekhar

    Thread Starter New Member

    May 19, 2017
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    how to make seven segment decoder
     
  2. Motanache

    Member

    Mar 2, 2015
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    CD4511 or microcontroller
    [​IMG]
     
  3. dl324

    AAC Fanatic!

    Mar 30, 2015
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    Welcome to AAC!
    Is this homework?
     
  4. EM Fields

    Active Member

    Jun 8, 2016
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    74LS47.png
     
  5. StayatHomeElectronics

    AAC Fanatic!

    Sep 25, 2008
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    I think it is nice to have the 7-seg to go
    0 1 2 3 4 5 6 7 8 9 A b C d E F
    to get full hex readings on the output.

    Add some additional logic to the schematic from EM Fields...
     
  6. EM Fields

    Active Member

    Jun 8, 2016
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    With no optimization:
    Hex to 7-segment decoder.png 7-segment map.png
    Oops... "7" is missing SEGF. I'll fix it when I get a chance.

    Drawings fixed; see post #10.
     
    Last edited: May 25, 2017
    absf likes this.
  7. StayatHomeElectronics

    AAC Fanatic!

    Sep 25, 2008
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    It is always a good exercise in keeping a schematic neat and orderly! Especially for the beginner who almost never manage one that is this easy to read until their second or third try.
     
  8. dl324

    AAC Fanatic!

    Mar 30, 2015
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    In addition to 7, you seem to have the wrong number of segments on in 4, 8, b, E, and F. Also seem to have the segments mislabeled; 'a' is on top, as shown in post #2.
     
  9. StayatHomeElectronics

    AAC Fanatic!

    Sep 25, 2008
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    Is our Thread Starter still around to benefit from the corrections?
     
  10. EM Fields

    Active Member

    Jun 8, 2016
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    Yup, good catch, thanks.
    Here are the corrected drawings:
    Hex to 7-segment decoder.png
    Hex to 7-segment map.png
     
    Last edited: May 25, 2017
  11. JohnInTX

    Moderator

    Jun 26, 2012
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    According to his Profile, not since the first post. Good info for others, though.
     
  12. EM Fields

    Active Member

    Jun 8, 2016
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    There were no corrections made by dl324, so any benefit accrued isn't from corrections made, it's from the errors he pointed out.
     
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