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Count sequence design using 7 segment display.

Discussion in 'Homework Help' started by mitsubishi9908, May 7, 2009.

  1. mitsubishi9908

    mitsubishi9908 New Member

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    i need to design a count sequence of 4,2,1,8 in decimal. can be initiated with a push button or toggle switch. can be detected in hardware or software and displayed on a 7 segment display(trainer). count sequence can be accomplished by using a parallel load register or any counter design. NEED HELP I AM CLUELESS?? any help would be great
     
    Last edited by a moderator: May 8, 2009
  2. MrAl

    MrAl Well-Known Member Most Helpful Member

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    Hi,

    I can give you a few hints...

    You can use a 4 bit shift register to shift a "1" around, that
    will be your counter. The count will go 1,2,4,8, but you can
    swap output lines to get the actual count sequence you want.
    You can then run that to a 7 segment decoder to drive a 7 segment
    LED device.
    You'll also need an oscillator unless you want to drive it with
    repeated pushes of the button.

    Hope that helps...
     
  3. mitsubishi9908

    mitsubishi9908 New Member

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    any other ideas pretty desperate?
     
  4. dave

    Dave New Member

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  5. Sceadwian

    Sceadwian Banned

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    MrAls's hints weren't good enough? What have you come up with?
     
  6. soadrage7654

    soadrage7654 New Member

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    Those hints were very good hints. If you had any idea what you were doing, they would have made perfect sense. Besides, this thread already got locked once for simply asking people to do your homework. Posting it twice won't make people any more willing to do it for you.
     
  7. MrAl

    MrAl Well-Known Member Most Helpful Member

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    Hi again,


    Another little hint...

    You can use a regular binary counter or two flip flops as the main counter,
    run the outputs to a 1 of 8 decoder, use four of the outputs to run to
    a 7 segment decoder with a 7 segment LED connected to it.
    If you run the outputs of the 1 of 8 decoder correctly to the 7 segment
    decoder, you will get the exact sequence you are looking for.
    Again you will also need an oscillator or push button (debounced) to drive
    the counter.
     
  8. mitsubishi9908

    mitsubishi9908 New Member

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    thank you Mr.Al you are the man
     
  9. Berserk87

    Berserk87 New Member

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    the first post MrAl made was the full answer, and would have worked perfectly.

    im going to assume you'll want a button instead of the oscillator, so your teacher can click to step through.
    i had to do this same assignment a year ago.
     
    Last edited: May 16, 2009

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