Question

Short notes on hard disk​

Answer 1

Answer:

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A hard disk drive (HDD), hard disk or hard drive, is a data storage device for computers which uses magnetic storage to store data. The capacity of a hard drive is usually measured in gigabytes (GB), however hard disk capacity can also be measured in terabytes when the capacity is over 1000 gigabytes. A gigabyte is one thousand megabytes and a megabyte is one million bytes, which means that a gigabyte is one billion bytes. Some hard drives are so large that their capacity is measured in terabytes, (TB) where one terabyte is a thousand gigabytes (1 TB = 1024 GB).

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Answer 2

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$\bf\qquad{Short \: note \: on \: Hard \: Disk \: \huge \red↓ }$

Hard Disk holds a large amount of data than a floppy disk . A hard disk is made up of stacks of disks called platters . These platters are stacked vertically on a common axis . Surface of each platter is coated with a magnetic material . All the disks except outher portion of top and bottom disks are used to store data . An arm pushes and pulls the set of read - write head across the surface of the spinning disks to access data.

The access arm can move a read - write head directly to the desired track . The system provides the disk address to the read - write arm and enables it to read specific information .