About Electronic Voting Machine (EVM)

An EVM consists of a "control unit" and a "balloting unit". The control unit is with the Election Commission-appointed polling officer; the balloting unit is in the voting compartment into where voter casts her vote in secret. It runs on a single alkaline battery fitted in the control unit, and can even be used in areas that have no electricity. They are manufactured by Electronics Corporation of India Limited (ECIL) and Bharat Electronics Limited (BEL).