Electronic Voting Machine

Topics: Voting system, Vote counting system, Elections Pages: 8 (2207 words) Published: April 22, 2013
In general the EVM consists of two units that can be inter linked. A ballot unit, which a voter uses to exercise his vote. And the other, a control unit used by the polling officials. But the EVM prepared by us is totally automated.MCU is acting as the Polling Officer in this EVM.

Ballot Unit
It consists of a 16x2 LCD and IR LEDs.
LCD displays the name of the post and candidate for which voting is going on IR LEDs are used as touch switches. For anything which you have to select, put your figure just above the option where it is being displayed on the LCD. Control Unit

It consists of a MCU and a 7 keys keypad.

MCU stores the program, run it and also stores the data given by voters. We have made keypad, which can be used to input the name of Posts and the Candidates. By using this we will not have to program the machine each time before any election. One can enter the name of posts and candidates just before the election. This can also prevent programming the EVM to favour any particular candidate.

1.1 The Electronic Voting Mach
ine – An Electronic Marvel.
Electronic Voting Machine (EVM) retains all the characteristics of voting by ballot papers, while making polling a lot more expedient. Being fast and absolutely reliable, the EVM saves considerable time, money and manpower. And, of course, helps maintain total voting secrecy without the use of ballot papers. The EVM is 100 per cent tamper proof. And, at the end of the polling, just press a button and there you have the results.

Electronic voting machine has now days become an effective tool for voting. It ensures flawless voting and thus has become more widespread. It ensures people about their vote being secured. It avoids any kind of malpractice and invalid votes. Also such kind of system becomes more economical as consequent expenditure incurred on manpower is saved. It is also convenient on the part of voter, as he has to just press one key whichever belongsto his candidates. Voting machinesare the total combination ofmechanical,electromechanical, or electronic equipment (includingsoftware,firmware, and documentation required to program control, and supportequipment), that is used to define ballots; to cast and count votes; to report or display election results; and to maintain and produce any audit trail information. The first voting machines were mechanical but it is increasingly more common to use electronic voting machines. A voting system includes the practices and associated documentation used to identify system components and versions of such components; to test the system during its development and maintenance; to maintain records of system errors or defects; to determine specific changes made after initial certification; and to make available any materials to the voter (such as notices, instructions, forms, or paper ballots). Traditionally, a voting machine has been defined by the mechanism the system uses to cast votes and further categorized by the location where the system tabulates the votes. Voting machines have different levels of usability, security,efficiency and accuracy. Certain systems may be more or less accessible to all voters, or not accessible to those voters with certain types of disabilities. They can also have an effect on the public's ability to oversee elections.

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...
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