A circuit board which links the Hard Disk & the Motherboard . When access to information on the hard disk is requested by the Operating System , the controller tells the Hard Disk to get to work. With IDE Hard Disks, the controller is built into the Hard Disk itself.
Meaning of CONTROLLER in English
English glossary of Internet and PC terminology. Английский глоссарий Интернет и ПК терминологии. 2012