What is a disk drive and what is it used for?

Disk drive is divided into floppy disk drive and hard disk drive, is the most important external memory configured on the microcomputer, especially the hard disk, with large capacity, fast data access speed, is the most important storage device for various computer installation programs, saving data.

Floppy disk drive is one of the extractive storage devices, and there are several popular extractive storage devices on the market, including magnetic media ZIP, LS 120 floppy disks, JAZ, Winchester disks (including Syquest), and magneto-optical interface MOPD. In general, these interfaces can be mated to most of the most popular interfaces, including parallel interfaces, ATAPI (IDE hard disk drive interface), SCSI interfaces, and PCMCIA card terminals for notebook computers. In addition, different storage media have different properties and capacities; Generally speaking, the capacity and speed of the floppy disk interface are relatively low, and the price per storage unit is midstream**.

Hard disk storage medium is the highest speed type, and its ** per unit is not too expensive, probably because of the large capacity of each storage interface, so the storage ** except for it is reasonable. Magneto-optical interface storage** is the cheapest and faster than floppy disks, but it is generally more expensive due to the laser optics involved in the drives.

A disk drive is your hard drive that is used to house your operating system and programs. Keeping your computer working is one of the main components of your computer.

A disk drive is both an input and an output device。Because it can both read the information stored on the disk into memory, and write the information from the memory to the disk.

A disk drive is an electronic computer.

A part of the disk memory is used to drive the disk to rotate at a steady speed, and to control the head to record and read information on the disk surface magnetic layer according to a certain recording format and encoding mode. A disk drive consists of a head, a disk, a read-write circuit and a mechanical servo device.

Classification of disk drives

1. Hard drive

A hard disk drive, abbreviated as a hard disk, is a primary computer storage medium consisting of one or more discs made of aluminum or glass. These discs are covered with ferromagnetic material.

The vast majority of hard drives are fixed hard drives that are permanently sealed and fixed in the hard drive.

2. Floppy disk drive

Floppy disk drives used to be an indispensable part of a computer, which could boot up the computer when necessary, and also used it to transfer and back up some smaller files. The main components of the floppy drive are the control circuit board, the motor, the head, the stator and the head.

3. Optical drive

The optical disk drive is usually called the optical drive, which is a device that reads optical disc information. Because the disc has a large storage capacity, is cheap, has a long storage time, and is suitable for storing a large amount of data, such as sound, images, animations, information, movies and other information, the optical drive is an indispensable hardware configuration for many computers.

The above content refers to Encyclopedia - Disk Drives.

There are two common types of disk drives: hard drives and floppy disks.

Drive. Floppy disk drives are designed to receive removable floppy disk beams, and are currently commonly used in inch-sized floppy pots. Floppy disks have slow access speed and small capacity, but they can be loaded and detached and easy to carry.

The hard drive (including the hard disk itself) is fully sealed in a protective case. Hard disks have become the main external memory devices of various models due to their large capacity and fast access speed. A typical ITSG machine can be configured with a different number of hard drives, and there is room to expand the hard drives.

The indicators of hard disk are mainly reflected in capacity and rotational speed. The faster the disk rotation, the faster the access speed, but the higher the requirements for disk reading and sketching. The capacity of disks has grown from tens of megabytes or hundreds of megabytes in the past to a few gigabytes (1 gigabyte 024 megabytes) to dozens of gigabytes.

For example, at present, ATA hard disk (i.e., IDE hard disk) inch products are commonly used in microcomputers, with a speed of 200R min, and the capacity has fully entered the threshold of 40GB for a single disk, and the largest capacity has exceeded 100GB. The SCSI hard disk with faster speed and stronger random access ability has reached 10000 15000r min.

This refers to disks as storage devices for recording information**.

According to the Quick Encyclopedia, the disk drive, also known as the "disk machine", refers to the disk as a storage device that records information, which is composed of a magnetic head, a disk, a reading and writing circuit and a mechanical servo device.

IBM first introduced the disk drive exciter in 1956 in its Model 305 RAMAC. The device is a part of the disk memory in the electronic computer, which is used to drive the disk to rotate steadily, and controls the magnetic head to record and read information on the magnetic layer of the disk surface according to a certain recording format and encoding mode, which is divided into three types: hard disk drive, floppy disk drive and optical disk drive.