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brief of usbUSB Universal Serial BUS English is the acronym, the Chinese meaning is "Universal Serial Bus." It is not a new bus standard, but PC applications in the areas of interface technology. USB is the end of 1994 by Intel, Compaq, IBM, Microsoft and other companies that put the joint. But until recently, it was widely applied. From November 11, 1994 published a USB V0.7 version of the future, USB version has undergone years of development, up to now have been developed for version 2.0, become an extension of the standard computer interface. The current board is mainly used in USB1.1 and USB2.0, the USB version of the compatibility can be very good. USB plug with a 4-pin plugs as a standard, the form can be daisy chain all the peripheral connections, can connect up to 127 external devices, and no loss of bandwidth. USB host needs hardware, operating systems and peripherals to support three areas of work. The current board is generally used to support the control function USB chipsets, motherboards also install a USB socket interface, but apart from the socket backplane, the board also set aside a USB pin, you can connect from the chassis As a prefix in front of USB interface to facilitate the use of (note that the wiring should be carefully read the motherboard manual and plans connected to the wrong but must not damage equipment). And USB ports can also special USB-connected to achieve double-line interconnection, and can be extended through the Hub more interface. Transmission speed of USB (USB1.1 is 12 Mbps, USB2.0 is 480 Mbps), ease of use, support hot-swappable, flexible connectivity, the advantages of an independent power supply, you can connect a mouse, keyboard, printers, scanners, cameras, USB Flash Drive, MP3 machines, mobile phones, digital cameras, mobile hard drives, floppy-external, USB cards, ADSL Modem, Cable Modem, almost all the external equipment. USB is an external bus standard for regulating computer and external connectivity and communications equipment. USB interface to support the plug-and-play equipment and hot-swap functions. USB interface can be used to connect as many as 127 kinds of peripherals, such as a mouse, a modem and keyboard, and so on. USB introduced since 1996, has been successfully replaced serial and parallel port and a large number of today's personal computers and smart devices will be assigned one of the interface. USB uses a four-pin plugs as a standard plug, daisy chain form can connect all the peripherals. USB version | ||
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