The document describes the components and operation of an electronic voting machine (EVM): 1) The EVM consists of a control unit, ballot unit, and interconnecting cable that allow voters to cast votes electronically. 2) The ballot unit displays candidate buttons that voters press to cast their votes, while the control unit is used by polling officials to start and stop the voting process. 3) At the end of voting, polling officials use the control unit to obtain vote counts from the EVM and close the voting process.