can anyone explain how this works?

Discussion in 'General Electronics Chat' started by jeremy tan, Nov 13, 2014.

  1. jeremy tan

    Thread Starter New Member

    Nov 10, 2014
    4
    0
  2. Papabravo

    Expert

    Feb 24, 2006
    10,150
    1,792
    Hi. I'd like to help you out but the image is so poor that I can't tell how the counter is connected.
    In general terms the counter is reset to '00' by the start signal.
    Whenever the Least Significant Digit (LSD) is a '9' AND the Most Significant Digit (MSD) is NOT '5'; the MSD is incremented by '1' and the LSD is reset to '0'
    Whenever the LSD is a '9' AND the MSD is a '9'; both digits are reset to '0'

    That's it in a nutshell unless there are small details hidden by the unreadable schematic.
     
  3. jeremy tan

    Thread Starter New Member

    Nov 10, 2014
    4
    0
    i'll post a clearer picture. thanks for the explanation so far.
     
  4. jeremy tan

    Thread Starter New Member

    Nov 10, 2014
    4
    0
    heres a clearer pic above
     
  5. Papabravo

    Expert

    Feb 24, 2006
    10,150
    1,792
    That's better but I still can't follow the critical nets from the counter outputs to U6{A,B,C,D} inputs
     
  6. jeremy tan

    Thread Starter New Member

    Nov 10, 2014
    4
    0
    click on the dropbox link and you'll find the original file there
     
Loading...