19. Hard Disk Drive
A hard disk drive (HDD), commonly referred
to as a hard drive, hard disk, or fixed disk
drive, is a device that stores digitally
encoded data on rapidly rotating platters
with magnetic surfaces. Hard disks are the
main large data storage area inside your
computer. Hard disks are used to store your
programs and data. They are much faster
than most other types of storage device
and can also hold much more data.
