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atmel 89c51 and a 4*3 keypad and a lcd!!

Discussion in '8051/8951' started by alimob, Jul 14, 2006.

  1. alimob

    alimob New Member

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    hi............

    plz i need immediate help.................
    i need to make a 4 fuction calculator.....
    i am using:
    1. 4*3 keypad
    2. a single line display 16 pin LCD
    3. atmel 89c51 micro controller
    4. code must be in c language....

    plz help me........i need to submit my project in abt 8 days.......i need help starting from basics.......
     
  2. Papabravo

    Papabravo Well-Known Member

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    I'm sorry but the fastest elapsed time from concept to a board with working firmware for me was nine days. I've been doing this for 44 years, so as you can see even on my best day I couldn't do it. Sorry you got a late start.
     
  3. akg

    akg New Member

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    u start by studying the interfacing between keyboard and LCd with the micro
    refer
    http://www.electronicsforu.com/elec...=Interface 16 character 2 line LCD with 89C51

    http://www.electro-tech-online.com/threads/atmel-at89c51-keyboard-interface.21813/
     
  4. dave

    Dave New Member

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  5. masud58

    masud58 New Member

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    ur problem will be solved

    for shortcut u may find calculator at the simulator software "powerfull" proteus, sample file

    http://www.labcenter.co.uk/index_uk.htm
     
  6. Hesam Kamalan

    Hesam Kamalan New Member

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    baba zamane bishtary bayad bedi
     
  7. masud58

    masud58 New Member

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    Like this?

    i think its help for u.
     

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  8. alimob

    alimob New Member

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    thankx.......

    well..........look..........i am doing electronic engg...and i am in the 2nd semester....i know basic "c".....from functions to arrays to pinters........

    i have full command of keil...
    and proteus......
    i have a programmer for 89c51...

    but still i have never used micro-controller before..or LCd.............never studied abt it either.......its a challenge sort of a project for me...........

    i know all abt atmel 89c51......pins..there function etc....
    and a bit abt how to interface a keypad....but no concept abt lcd.....

    so plz i nee dfurther help.....
    1. i have seen the sample in protues.........
    i need to know what are other IC's in the circuit.....besides 89c51.....can anybody explain??

    i need code too..in c....
    the schemetic is given by someone in this post........plz hurry i need help..
     
  9. vip3r

    vip3r New Member

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    YPU. boy i think i only need now how to program LCD and how to properly connect it... how to delay btw commands... i am just able to turn on the blinking cursor of lcd...
    i also have to submit tis same project the circut given above in a post contain two portions in assembly so it is not possible for me to understand assembly as i only know C...
     
  10. aitbar

    aitbar New Member

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    hello all,

    plz i need help.
    i need to make a project
    i am using:
    1. 4*3 keypad
    2. a 2 line display 16 pin LCD
    3. atmel 89c51 micro controller
    4. code must be in c language....
     
  11. muhammad afzal

    muhammad afzal New Member

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    hellow
    i want help inpc clock interface and seven segment disply by searial port
    pls help in code and design by 89c51
    malik_afzal74@yahoo.com
     
  12. muhammad afzal

    muhammad afzal New Member

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    hello all,

    plz i need help.
    i need to make a project
    i am using:
    1. 4*3 keypad
    2. display digit on seven segment
    3. atmel 89c51 micro controller
    4. code must be in assembly in keial language....
    malik_afzal74@yahoo.com
     
  13. butt

    butt New Member

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    sms typing

    ATMEL 89C51and 4*3 keypad and a lcd
    i want to type a message on lcd using above equipments.
     
  14. vip3r

    vip3r New Member

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