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Electronic Voting Machine Using 8051 Microcontroller (AT89C51)



 


Circuit

Electronic voting machine has now replaced the traditional mechanism of voting due to several advantages like security, automatic counting etc. This project presents a way to develop an electronic voting machine which displays the count of votes on a 16x2 LCD interface. A user can get his/her vote register through a set of switches (one for each candidate). After every cast of vote, the subsequent count can be seen on LCD. The circuit uses AT89C51 microcontroller and the code for the project has been written in C.

This LCD based electronic voting machine is designed for four candidates. The input part consists of a set of six tactile switches. The switches and 16x2 LCD are interfaced to microcontroller AT89C51 for various operations and displays.

The provision of casting votes for the candidates has been provided through four of these switches. These switches are made active high and connected to pins 2-5 (P1^1 – P1^4) of the controller. The remaining two switches (both active low) are to start and stop the voting procedure. They are connected to pins 1 and 6 (P1^0 and P1^5) respectively. The Init (start) switch initializes the voting system when pressed, while the Stop switch ends the voting and displays the poll results on LCD screen.

For more details on working with LCD, refer LCD interfacing with 8051. The data pins of the LCD (pins 7-14) are connected to the output port P2 of the microcontroller. The control pins (RS, R/W and EN) are connected to port P3 pins P3^0, P3^1 & P3^6 respectively.

Working:
The voting is started by pressing the Init switch after which the user is prompted to vote. The count of votes is stored in four different variables. As soon as the user votes for a candidate by pressing one of the switches, the value of the corresponding variable is increased by one. After this a Thank you message is displayed on LCD to acknowledge the registration of user’s vote.

The message stays on the screen until the next user either presses the Init button to cast another vote or Stop switch is pressed get the poll results. When the stop button is pressed, the names of the candidates are displayed along with their vote counts. After some delay, the result is displayed which could be either declaration of the winner candidate or the candidates with a clash of their number of votes. 

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Comments

  1. ShishirMay 13, 2013 at 10:10 PM

    Hi Vishal,

    I'm unable to download the code from the link provided of www.scribd.com, can you please email me the code or please provide direct link to the code, It's appreciated.

    My email: shishirbhatnagar@gmail.com

    Thanks...

    ReplyDelete
    Replies
    1. Raheman7555February 2, 2020 at 9:37 AM

      Send codd

      Delete
    2. Raheman7555February 2, 2020 at 9:37 AM

      Send codd

      Delete
    3. Raheman7555February 2, 2020 at 9:39 AM

      Unable the download plz send code

      Delete
    4. Raheman7555February 2, 2020 at 9:40 AM

      My Gmail. rsm7555@gmail.com

      Delete
    5. Raheman7555February 2, 2020 at 9:41 AM

      Unable the download plz send code

      Delete
    6. AnonymousApril 19, 2022 at 5:58 PM

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      Electronic Voting Machine Using 8051 Microcontroller (At89C51) >>>>> Download LINK

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  2. Vishal KottarathilMay 24, 2013 at 12:52 AM

    It is available, no problem. Check Once more. (You may need an account)

    ReplyDelete
  3. chee_yong88June 5, 2013 at 4:36 AM

    after the file generated by the keil, its size had exceed 4k, can it still be able to burn into atmel 89c51 microntroller?

    ReplyDelete
  4. chee_yong88June 5, 2013 at 4:41 AM

    if i use the atml 89s52 micro controller, do i need to change the #include into #include?

    ReplyDelete
  5. chee_yong88June 5, 2013 at 4:43 AM

    if i use the atml 89s52 micro controller, do i need to change the #include into #include ?

    ReplyDelete
  6. AnonymousJune 6, 2013 at 11:02 PM

    Nice work. You have done a great job. keep it up.

    ReplyDelete
  7. Vishal KottarathilJune 7, 2013 at 7:59 PM

    @chee_yong88
    Its done on 89S52, no compatibility problem. Choose 89S52 in your Keil project.

    ReplyDelete
  8. UnknownJune 12, 2013 at 4:43 AM

    hi vishal
    will you help me to write for me code using 40x2 microcontroller
    thanks

    ReplyDelete
  9. UnknownSeptember 12, 2013 at 10:38 PM

    As the author had discussed about the voting keypads within this post, this could offer a lot of support to the visitors in getting familiar with the product but to theorizing about some element to make the client feel to purchase it, is it sufficient? No, it is not, the customer also need to observe visible outcomes for proving the product trustful as well as beneficial according to their want.

    ReplyDelete
  10. UnknownSeptember 29, 2013 at 2:39 AM

    Hi Vishal, I have already tried ur project in p89v51rd2 uc but unable to get desired results. The control stops at the switches taking no i/p & finally I dumped the project.

    ReplyDelete
  11. Vishal KottarathilSeptember 29, 2013 at 3:51 AM

    @Subhra, I have done a couple of them. There is no problem with the code or circuit. Compile it for 89C51 or 89S51/52, and do a simulation in Proteus.

    ReplyDelete
  12. UnknownOctober 8, 2013 at 10:13 PM

    Electronic voting keypads are voting solution or you can say a real time sounding out system that allow users to survey the audience of a show by asking them questions and gathering their answers to these keypads. Generally these systems are fully integrated into PowerPoint and thus the results are graphically displayed promptly.

    ReplyDelete
  13. UnknownOctober 14, 2013 at 5:00 AM

    plz provide all component list with proper ckt diagram..........as soon as possible.....

    ReplyDelete
  14. Vishal KottarathilOctober 14, 2013 at 8:22 AM

    @atul
    There is a need of crystal oscillator and two startup capacitors at the oscillator section, connect crystal (12MHz) to pins XTAL1 and XTAL2, connect a 22pf capacitor across each of XTAL pins and ground. Connect VEE of LCD to GND or connect a variable resistor across as VDD-VEE-VSS (if you want to control contrast) , hope you got it.

    ReplyDelete
  15. UnknownOctober 15, 2013 at 4:18 AM

    dont you have the code in assembly?

    ReplyDelete
  16. UnknownOctober 23, 2013 at 11:31 AM

    thanks vishal.. :)

    ReplyDelete
  17. UnknownNovember 29, 2013 at 11:49 PM

    If there are any disadvantages please tell me quickly?

    ReplyDelete
  18. UnknownNovember 29, 2013 at 11:58 PM

    If you don't mine. continue my doubts in telugu language?

    ReplyDelete
  19. Vishal KottarathilNovember 30, 2013 at 4:01 AM

    @Basava
    I dont know telugu. What is your problem?

    ReplyDelete
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  21. UnknownJanuary 7, 2014 at 2:19 AM

    sir please sent me specifications of various component in electronic voting machine

    ReplyDelete
  22. Vishal KottarathilJanuary 7, 2014 at 4:44 AM

    @Ganesh
    There is a need of crystal oscillator and two startup capacitors at the oscillator section, connect crystal (12MHz) to pins XTAL1 and XTAL2, connect a 22pf capacitor across each of XTAL pins and ground. Connect VEE of LCD to GND or connect a variable resistor across as VDD-VEE-VSS (if you want to control contrast) , hope you got it.

    ReplyDelete
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  24. UnknownJanuary 29, 2014 at 5:02 AM

    please i need code please and send me in this email milansubba19@gmail.com

    ReplyDelete
  25. UnknownFebruary 24, 2014 at 10:42 PM

    cant find thhe code ...... sooo can u plzzzz send us the code

    ReplyDelete
  26. UnknownApril 20, 2014 at 4:50 AM

    can you please send me assembly code for this project?
    My email ID is : nijamul.uiu112@gmail.com

    ReplyDelete
  27. suvarnaAugust 24, 2014 at 10:02 PM

    Please send me the code for this machine
    su.kadam05@gmail.com

    ReplyDelete
  28. UnknownOctober 4, 2014 at 8:01 PM

    Pls help me with d ckt diagram

    ReplyDelete
  29. best10reviewsNovember 19, 2014 at 1:26 AM

    Hello your blog is sharing great information on this topic, we are providing best electronic machine tools services Woodworking Machine. Thanks for sharing this information.

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  30. UnknownApril 1, 2015 at 10:18 AM

    Can you possible to add buzzer and LED to make the design work has more security system?

    ReplyDelete
  31. UnknownApril 1, 2015 at 10:20 AM

    please help me?

    ReplyDelete
  32. UnknownNovember 2, 2015 at 11:13 AM

    I need the code

    ReplyDelete
  33. AnonymousDecember 3, 2015 at 6:35 AM

    good

    ReplyDelete
  34. UnknownFebruary 19, 2019 at 5:26 AM

    Please send the code and circuit

    ReplyDelete
  35. Aarti's_thoughtsFebruary 23, 2019 at 6:44 AM

    Sir please send me code of this project
    Email-aartichame2015@gmail.com
    Also tell me the list of components used in this project...as soon as possible

    ReplyDelete
  36. Vishal KottarathilJuly 4, 2020 at 10:16 AM

    Code moved to github, please check the new link
    Thanks

    ReplyDelete
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  43. Abel Varghis MathewsMay 20, 2023 at 11:13 PM

    could you please give a list of all the components used from scratch as i am not able to identify them. thank you

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