what is hard drive in computer
Hard disks are generally not removable. Their storage capacity can range, from hundred megabytes to several gigabytes and terabyte.
For more capacity and faster access speeds than those with floppy disks, fixed or hard disk storage is used with microcomputers. The hard disk generally available for use with microcomputers (3.5 or 5.25 inch) is similar to those disks available with mini- and mainframe computer systems (usually 14-inch). However, unlike the hard disks for the larger computer systems, the hard disks for the microcomputers are generally not removable. Their storage capacity can range from hundred megabytes to several gigabytes.
Disk cartridges, which are removable hard disks housed within a cartridge, are also available. These cartridges are in different capacities beginning with 20 megabytes.
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