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Introduction to EVM:

Introduction to EVM It is a reliable machine for conducting Elections. Has mainly 2 units: Ballot and Control Units. Operates on a Special Battery Tamper-proof Information recorded is retained in memory even when the battery is removed. Manufactured by Electronics Corporation of India & Bharat Electronics Ltd. and approved by Election Commission, India. Easily portable

Units :

Units Each Unit has been provided a casing. Once opened 3 things will be found: Control unit, Ballot Unit and the Interconnecting Cable. Control Unit Ballot Unit Cable


Battery They are Special batteries supplied separately These batteries have a Seal which should be removed before Using They have an active lifetime of 24 hours.

DETAILS of Units :

DETAILS of Units Ballot Unit Used by Voters for casting their votes. It consists of : BJP Congress Interconnecting Cable Ballot paper Screen Ready Lamp Candidate buttons(16) Candidate lamps(16)

Details of Ballot Unit:

Details of Ballot Unit Ready lamp glows GREEN when Ballot button on Control Unit is pressed by P.O. to enable voting. Goes Off when voter has finished casting his vote. Slide Switch Panel used to set anyone of the 4 options: 1,2,3,or 4. ie. For 1 ballot unit Switch is set to 1 and so on… Candidates lamp : glows RED when the voter has pressed the candidate button pertaining to the candidate of his choice. Ballot paper Screen : where the Ballot Paper with name, sr,no., Symbol of contesting candidates is inserted. Masking tabs provided under the Candidate buttons. So depending on the no. of candidates contesting, the tabs are unmasked. Ones not in use are masked.

2. Control Unit:

2. Control Unit Controls the polling process. Operated only by P.O. Consists of: Busy lamp ON lamp Display Section Candidate Set Section Result Section Ballot Section 4 sections in all

Lamps details….:

Lamps details…. On lamp: in display section will glow GREEN when Control Unit Power switch is put ON, indicating EVM is ready for use. Busy lamp : in display section glows RED when Ballot button is pressed by P.O. to enable voter to cast vote. Goes Off when over.


Beeps A beep of not less than 2 seconds after a voter casted his vote . A beep of 1 second, when displaying information on display units. Short interrupted beeps to show malfunctioning , disconnection, errors….

Control Unit buttons:

Control Unit buttons Cand Set : used to set EVM for no. of candidates contesting the election. Clear : pressed before start of a poll: to clear machine of recorded informations. Used when election is over/ not done w/o orders. Ballot: enables voter to record his vote: so once pressed: the BUSY lamp goes Red, Ready lamp of C.Unit goes Green and voter can now caste his vote. Then Pressed again to allow next voter to record his vote…. Total : shows no. of candidates and total no. of votes recorded so far. Pressed at anytime: to see the same. But not when Busy lamp is ON. Close : Once pressed: no further voting can take place . Only pressed at the end of the Poll. When Pressed the no. of polls, no. of candidates, total votes polled and the word end will be displayed. Result: when EVM is used for simultaneous poll: ie Lok Sabha & Legislative assembly polls , both Result 1 & 2 are used ie. R1 for Loksabha,R2 for LA. When only single Poll, only R1 is used. In our case Only Result 1 USED. When Pressed it will display in sequence the no. of candidates, total no. of votes polled, votes for each candidates. The finally displays END. This button can be pressed as reqd.

The EVM as it looks…..:

The EVM as it looks….. Ballot Unit Control Unit



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