ELECTRONIC VOTING MACHINE (EVM)

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ELECTRONIC VOTING MACHINE(EVM)

• Presented by Miss.Kenyir Olga Nongrum, NIC
• for Election
  Dept.Jowai.

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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

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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
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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.

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DETAILS of Units

• Ballot Unit
• Used by Voters for casting their votes.
• It consists of

Ready Lamp
BJP
Candidate buttons(16)
Congress
Interconnecting Cable
Candidate lamps(16)
Ballot paper Screen
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Details of Interconnecting Cable

• It is a flat protected cable and whos one end is
  connected to the Ballot Unit permanently while
  the other end is attached VIA a connector to the
  Control unit.
• Make sure that the cable is properly secured to
  the Control unit.

Cable
TOP
15 PIN CONNECTOR
SPRING CLIPS
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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.

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2. Control Unit

• Controls the polling process.
• Operated only by P.O.
• Consists of

Display Section
Busy lamp
ON lamp
Candidate Set Section
4 sections in all
Result Section
Ballot Section
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Details of Control Unit

• Display section has 2 lamps On and Busy also
  2 display panels one of 2 digit and other of 4
  digit displays.
• Candidate Set Section has a cover opening l-r
  we see a left compartment which accommodates the
  Battery and the right one a Red Cad Set button.
  This section is closed by thread Seal.
• Result Section also has same cover as above. On
  opening we find the left side has a Black Close
  button while right side has inner compartment
  with its own door. One button her is result 1
  button. used for one type of election only like
  only single Poll. Result 2 used for both types
  conducted at the same time, Clear button.
  Provision kept for a seal in the cover of this
  inner compt. and thread seal too.
• Ballot Section has 2 buttons , a gray Total
  button and a large Ballot button.
• Bottom of C.Unit also open for plugging the cable
  from b.unit and a power switch to switch EVM
  On/Off.

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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.

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Display Panel details

• 2 DIGIT DISPLAY
• LE link error ie. Interconnecting cable not
  properly connected.
• PE Pressed error, where any of the candidates
  buttons in Ballot unit are jammed or kept
  pressed.
• Er Memory Error Control unit not fit to use.

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Display Panel details

• 4 DIGIT DISPLAY
• no indicates a button pressed on Control unit is
  pressed out of sequence.
• End End of display sequence after pressing Close
  , Result or clear button.
• Full indicates max no.of votes for which
  machine is designed. 9999 is the max.

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Display on both panels

• nP 1 machine set for Single poll only.
• Cd 6 machine set for 6 candidates.
• to 1234 total no. of votes casted 1234
• 06 234 candidate 6 has 234 votes in his favor.

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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.

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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.

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SEQUENCE OF BUTTONS TO BE PRESSED ON CONTROL UNIT
CAND. SET
RESULT 1
CLOSE
CLEAR
RESULT 2
BALLOT
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The EVM as it looks..

• Ballot Unit Control Unit