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You are here: Home / Topics / problems in working of alphabetic keypad interfacing

problems in working of alphabetic keypad interfacing

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Microcontroller › 8051 › problems in working of alphabetic keypad interfacing

  • This topic has 2 replies, 2 voices, and was last updated 13 years, 8 months ago by Qaisar.
Viewing 3 posts - 1 through 3 (of 3 total)
  • Author
    Posts
  • October 18, 2011 at 3:20 pm #1322
    nupoora kanade
    Participant

    hello there,
    me and my group members have followed your guidance on the alphabetic keypad project…
    we arranged the circuit and programmed the ic but still we are not getting any results plz help plz…

    October 19, 2011 at 6:40 pm #6727
    Qaisar
    Participant

    wysiwyg_imageupload:2997:

    October 19, 2011 at 6:46 pm #6728
    Qaisar
    Participant

     

    hi 
    according to diagram i made these changes in code..
    just changed port declarations….
    follow this diagram .hope u will get result…
     
    make sure ur controller ic working properly and code is loaded properly…
     
    #define port P0
    #define dataport P2  //Data port for LCD
    #define key P3  // Port for Keypad
     
    sbit rs = port^0;
    sbit en = port^1;
     
    regards.
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