seperating digits in the keypad

Discussion in 'Homework Help' started by abuarab88, Apr 27, 2009.

  1. abuarab88

    Thread Starter Member

    Nov 6, 2008
    19
    0
    hello everyone,

    i need help in how to seperate two digits from the keypad and i want to display them on two 7-segments​

    i have the following circuit but the problem is in the keypad ​

    i may use 7 optoisolaters
    but it is hard

    if any one has any useful idea, ​
    plz help me

     
  2. StayatHomeElectronics

    Well-Known Member

    Sep 25, 2008
    864
    40
    Do you have any information on the keypad?
     
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