Disk Controller

from WordNet (r) 3.0 (2006)

disk controller
    n 1: (computer science) a circuit or chip that translates
         commands into a form that can control a hard disk drive

from The Free On-line Dictionary of Computing (8 July 2008)

disk controller

   <hardware, 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}.

   (1998-03-16)