When USB flash drive replaces floppy disk as people's conventional mobile storage tool, few people know that USB flash drive is not a product name, but only a registered trademark of flash drive. The company that invented the world's first flash drive and obtained the basic invention patent of the global flash drive, its founder and one of the invention patent holders, Lu, the president of Harbin Netac Technology Co., Ltd., settled in the Pioneer Park for Overseas Students in Harbin Development Zone at the beginning of his business, and jointly led the development of the global mobile storage industry with Shenzhen Netac Company.
Netac's only disk with U disk as its trademark is the world's first new generation storage product based on USB interface and using flash media. USB flash drive is the only original invention patent achievement of China in the field of computer storage in the past 20 years, which belongs to China people.
U disk, USB interface, plug and play
Generally speaking, USB is one of the interface types between peripheral devices and computer hosts. In addition to USB interface, there are parallel bus and other interfaces. However, USB interface has a great advantage that makes it very popular in this field, that is, devices with this interface can be plugged and played on computers (sometimes called hot plug).
When the computer is turned on, the peripheral equipment should be turned on first, and then the power of the host computer should be turned on, and the order of turning off is just the opposite. The reason why this boot sequence should be followed is that before the computer starts, all peripheral devices must be powered on to get ready, and then wait for the host to check these devices one by one and install the corresponding software. Only in this way can the computer run normally, otherwise the peripheral equipment may be unavailable or the computer cannot recognize the peripheral equipment.
However, the appearance of USB interface changed this situation. If a device is a USB interface, it can be plugged into the computer host at any time, no matter what state the computer is in at this time. If you want to take this device away, you can safely take it out of the computer according to the standard operation, which undoubtedly provides great convenience for people's study and life.
Therefore, it can be seen from the name of the U disk that this storage disk is a USB interface. Because this storage disk is a USB interface, this storage disk can be plugged in and played on the computer, which means that this storage disk is removable and can be carried around. Therefore, the broad U disk actually refers to mobile storage devices, and the narrow U disk only refers to flash drives.
Flash disk refers to a removable storage disk that uses flash technology to store data and information. Flash memory technology is a storage technology that has just emerged in the computer field for several years. Compared with the traditional electromagnetic storage technology, it has many advantages: first, this storage technology has no mechanical movement in the process of storing information, which makes it run very stably, thus improving its seismic performance and making it the most anti-vibration device among all storage devices. Second, because it doesn't have high-speed rotating disks like floppy disks, hard disks and optical disks. Its size can usually be made very small. Now MP3 players can be made very small because of this storage technology.
For example, some people say that he has a USB flash drive, which may be just an ordinary mobile hard disk, or a micro hard disk that has just appeared in recent years, or a USB flash drive. Of course, as mentioned above, the current USB flash drive generally refers to a USB flash drive, so we usually understand that what he has is a USB flash drive.