Defines
The USB stands for Universal Serial Bus English, Chinese is the meaning of the "Universal Serial Bus is an application of the new interface technology in the computer field in 1995, it has been a PC with a USB interface, butdue to the lack of software and hardware support, the PC's USB interface is idle unused 1998, with Microsoft's built-in Windows 98 support USB interface module, coupled with the growing number of USB devices, USBinterface before getting into the practical stage in recent years, with the popularity of a large number of USB-enabled PC, USB and gradually become the PC standard interface is the general trend. On the host side, the latest version of the PC is almost 100% support for USB; in the peripheral side, the device using the USB interface is also increasing, such as digital cameras, scanners, joysticks, tape and floppy drive, image equipment, printer, keyboard, mouse, and so on.