help! keypad encoder

Discussion in 'General Electronics Chat' started by yah-maa, Apr 21, 2009.

  1. yah-maa

    Thread Starter New Member

    Nov 22, 2008
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    Hi ;I need to take the BCD code from 3x4 keypad without using microcontroller...Is there a great man guid me to the circuit and I'll be very thankful...
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
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  3. yah-maa

    Thread Starter New Member

    Nov 22, 2008
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    Thank you ;

    but they concentrate on using PIC and I can't
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
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    The 74C922 gives a decoded output - Google "keypad encoder".
     
  5. yah-maa

    Thread Starter New Member

    Nov 22, 2008
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    ok!

    THANK YOU
     
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