The USB disk is neither a hard disk nor a floppy disk. U disk is a miniature high-capacity mobile storage product that uses a USB interface and does not require a physical drive. It is a type of flash memory and integrates disk storage technology, flash memory technology and universal serial bus technology. The biggest difference between a U disk and a hard disk is that it does not require a physical drive and is plug-and-play; the storage capacity of a U disk far exceeds that of a floppy disk, making it extremely easy to carry.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
The USB disk is neither a hard disk nor a floppy disk.
U disk, the full name is USB flash drive, the English name is "USB flash disk", it is a kind of flash memory, so it is sometimes called a flash disk.
U disk is a miniature high-capacity mobile storage product that uses a USB interface and does not require a physical drive. It can be connected to the computer through the USB interface to achieve plug-and-play.
The name U disk originally came from a new type of storage device produced by Netac Technology, called "U disk", which is connected using a USB interface.
After the U disk is connected to the USB interface of the computer, the data in the U disk can be exchanged with the computer. Since Netac has registered patents for equipment with similar technology produced later, it can no longer be called "U disk" and is renamed the homophonic "U disk". Later, the name USB flash drive became widely known because of its simplicity and ease of remembering, and it was one of the mobile storage devices.
The biggest difference between a U disk and a hard disk is that it does not require a physical drive and is plug-and-play; and its storage capacity far exceeds that of a floppy disk, making it extremely easy to carry.
Compared with other portable storage devices, flash USB flash drives have many advantages: they take up little space, usually operate quickly (USB1.1, 2.0, 3.0 standards), and can store more Data, and the performance is relatively reliable (because there is no mechanical equipment), and it will not damage the hardware when it is disconnected during reading and writing (the floppy disk will be damaged immediately when it is disconnected during reading and writing), and only data will be lost. This type of disk uses the USB mass storage device standard and has built-in support in operating systems such as Linux, Mac OS X, Unix and Windows.
Composition of U disk
The composition of U disk is very simple, mainly composed of shell and movement, among which:
1. Movement: Movement It includes a PCB USB main control chip crystal oscillator chip resistor, capacitor USB interface chip LED (not all U disks have it) FLASH (flash memory) chip [4].
2. Shell: classified by material, including ABS plastic, bamboo, metal, leather case, silicone, PVC software, etc.; classified by style, including card, pen, mini, cartoon, business, simulation, etc. ; Classified by function, including encryption, anti-virus, waterproof, smart, etc.
Expand knowledge:
Hard diskis a computer One of the main storage media, consisting of one or more aluminum or glass discs. These discs are covered with ferromagnetic material. The vast majority of hard drives are fixed hard drives, permanently sealed and secured within the hard drive.
Floppy diskis a kind of disc storage. The main part is a thin and soft magnetic storage media disc. The disc is encapsulated in a rectangular plastic shell and is lined with dust removal materials. fiber fabric. The reading and writing of floppy disks is completed through a floppy disk drive. The floppy disk drive is designed to receive removable floppy disks. Currently, a 3.5-inch floppy disk with a capacity of 1.44MB is commonly used. Floppy disks were an essential piece of hardware on early computers and were also the earliest removable media used on computers. Floppy disks have slow access speeds and small capacity, but they are removable and easy to carry. As a removable storage method, it is ideal for small files that need to be physically moved.
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