meaning of disk controller

1. disk controller storage> Or "hard disk controller", HDC The circuit which allows the CPU to communicate with a hard disk, floppy disk or other kind of disk drive. The most common disk controllers in use are IDE and SCSI controllers. Most home personal computers use IDE controllers. High end PCs, workstations and network file servers mostly have SCSI adaptors.
2. computer science a circuit or chip that translates commands into a form that can control a hard disk drive

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