I need help from guys who knows a lot about Digital

Discussion in 'Homework Help' started by Azure Sekki, Mar 2, 2019.

  1. Azure Sekki

    Thread Starter New Member

    Mar 2, 2019
    Apparently I tried searching on the net and I cant find the exact thing I'm searching

    I need help please give me real life example uses of 2:1 , 4:1 , 8:1 , 16:1 Multiplexer and 1:2 , 1:4 , 1:8 , 1:16 De-multipexer
    I really need examples this for a report

    THANKS in advance for those who will help me
  2. ericgibbs


    Jan 29, 2010
  3. mvas

    Active Member

    Jun 19, 2017
    Real Life examples that use "Multiplexing and/or Demultiplexing"
    1) Keypads / Keyboards
    2) LED Dot Matrix Displays - LED Advertising Signs
    3) Alpha-Numeric & 7 Segment Displays on appliances
    4) Parallel-to-Serial and Serial-To-Parallel conversion
    5) Decoding of an OP Code (Register Selection in the ALU) of a CPU
  4. Azure Sekki

    Thread Starter New Member

    Mar 2, 2019
    @mvas sir can u tell what specific multiplexer or demux are used in the example u given?
  5. WBahn


    Mar 31, 2012
    What is it that YOU are planning to do for this report YOU are supposed to be researching?
  6. Azure Sekki

    Thread Starter New Member

    Mar 2, 2019
    I alread tried researching and i only come up with few examples like FDM (frequency division multiplexing)

    A few specifics example can do
    I'm sorry for the trouble
  7. WBahn


    Mar 31, 2012
    mvas gave you FIVE specific examples.
  8. Raymond Genovese

    Well-Known Member

    Mar 5, 2016
    You are not researching efficiently. You have already been given enough information to get to what you say that you want.
    Let me explain:
    Above, you were given 5 examples as has been noted.

    1. Take the term "7 Segment Displays"
    2. Add to that the term multiplexor"
    3. Use Google to search for "7 Segment Display multiplexor"
    4. When the search comes up, click on "images"
    5. Click on a few example schematics. Here is the first one that came up when I did it...
    6. Visit the site where the schematic came from (https://tams.informatik.uni-hamburg.../45-misc/50-displays/multiplexed-display.html)
    7. Read about the project and the use of a 74138 3:8 demultiplexer

    Continue doing this with all of the examples already given to you as well as the other links that have already been given. After you have spent enough hours actually researching examples of both, you will be in a position to formulate any questions if you still have some - and you will have learned a different way of "researching" because I don't know what you were doing...
    absf likes this.