How to build a 7 segment count down circuit

Discussion in 'The Projects Forum' started by lito2012, Mar 3, 2012.

  1. lito2012

    Thread Starter New Member

    Mar 3, 2012
    1
    0
    Please help about the schematic diagram of LED Counter Project.........................
     
    Last edited by a moderator: Mar 3, 2012
  2. crutschow

    Expert

    Mar 14, 2008
    13,052
    3,244
    Do not hijack this thread. Please start your own.
     
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  3. Wendy

    Moderator

    Mar 24, 2008
    20,766
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    Welcome to AAC!

    A thread belongs to the OP (original poster). Trying to take over someone elses thread is called hijacking, which is not allowed at All About Circuits. I have therefore given you a thread of your very own.

    This was split from 9-0 seven segment counter
     
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  4. Experimentonomen

    Member

    Feb 16, 2011
    331
    46
    Doing it with logic circuits will actually be harder than a few lines of C code in an arduino.
     
  5. crutschow

    Expert

    Mar 14, 2008
    13,052
    3,244
    Only if you have an arduino, understand the arcane C syntax, and know how to write code. ;)
     
  6. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    Don't forget the programmer.

    Any kind of µC is usually cheaper, but it is a quantity issue, you need to do lots of projects for them to be justified.

    They also do not teach how to work digital (or analog in many cases). I have seen a lot of people who can use these suckers very well not have a clue on the basic of LEDs. If you have not paid your dues in basic electronics then learning µC short circuits a lot of learning. Knowing µC does not make you good with electronics, those who know both are better and more experienced than either alone, but true electronics is a much deeper subject.

    My favorite count up/down chip is the 4029, but the old 74192 or 74193 work well. Of the latter the 74192 is BCD, the 74192 is binary.
     
    Last edited: Mar 4, 2012
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