What is a computer disk

Computer disk is an external memory device of the computer, which is a round magnetic disk placed in a square sealed box. The purpose of this is to prevent the disk surface from being scratched and causing data loss; that is, a A computer information carrier that can be rewritten repeatedly.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

Computer disk is an external memory device of the computer, which is a round magnetic disk placed in a square sealed box. The purpose of this is to prevent the disk surface from being scratched and causing data loss. Simply put, it is a computer information carrier that can be rewritten repeatedly.

Disks are divided into floppy disks and hard disks:

Floppy Disk is the earliest removable media used in personal computers (PCs). Reading and writing floppy disks is done through floppy disk drives, which have now been replaced by USB flash drives.

#The hard disk is one of the main storage media of the computer and consists of one or more aluminum or glass discs. The disc is covered with ferromagnetic material. Hard drives include solid-state drives (SSD drives, new hard drives), mechanical hard drives (HDD traditional hard drives), and hybrid hard drives (HHD, a new hard drive based on traditional mechanical hard drives).

This is the disk that often appears on computers now.

Attachment:

The difference between disk and hard disk:

1. Different properties

1. Disk properties: using magnetic recording Technology stores data in memory.

2. Hard drive nature: the main storage device of the computer.

2. Different characteristics

1. Disk characteristics:

(1) Utilize the magnetic effect of current.

(2) Information carrier can also be rewritten repeatedly.

2. Hard drive characteristics:

(1) The capacity of the hard drive is measured in megabytes (MB) or gigabytes (GB), 1GB=1024MB, 1TB=1024GB.

(2) The spindle motor of the hard disk drives the disk to rotate at high speed, generating buoyancy to make the magnetic head float above the disk.

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