The AAP on Wednesday sought from the Election Commission the details of the manufacturer of micro-controllers and storage chips used in the Electronic Voting Machines (EVMs).Aam Aadmi Party (AAP) National Secretary Pankaj Gupta in a letter to Chief Election Commissioner (CEC) Nasim Zaidi thanked the poll panel for accepting the party's proposal "to allow the political parties to examine EVMs with their expert teams"."Since no official information is available regarding the configuration of EVMs, kindly provide us details (model number/chip number and manufacturer) of the components, micro-controllers, chips used for storage or for any other purpose," Gupta demanded in a letter to the CEC.The AAP also demanded it be allowed to pick variants of EVMs used to conduct elections, especially in Uttar Pradesh and Punjab state assembly polls.The party said it should be allowed to choose EVMs "randomly from a strongroom instead of the commission providing us the specific machines, so as not to give a chance for concerns that the machines provided are those specifically prepared for the examination".AAP Convenor and Delhi Chief Minister Arvind Kejriwal on Monday challenged the poll panel to hand over the faulty EVM in Madhya Pradesh to the perty for 72 hours as "we have experts who will check if the chip can be rewritten or not".Kejriwal claimed that the software in the EVM chips can be changed.