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Introduction and history of USB

Writer:东莞忠佑电子有限公司Source:www.hisetec.com Date:2017-4-23 23:17
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USB Introduction is the English Universal Serial Bus (Universal Serial Bus) abbreviation, is an external bus standard, used to regulate the computer and external equipment connection and communication. Is applied in the PC field interface technology. The USB interface supports plug-and-play and hot-swapping of devices. USB at the end of 1994 by Intel, Compaq, IBM, Microsoft and other companies jointly proposed.
The next generation USB interface will have the direction of change, the next generation of Type-C USB interface, can support both positive and negative plug, and the transmission of data signals, but the current (2014) manufacturers limited.
As of December 26, 2015, many domestic manufacturers have been large-scale in their own production of mobile phone equipment manufacturers based on the use of the standard data lines.
 
USB history: Since November 11, 1994 published USB V0.7 version, USB version has undergone many years of development, has developed into version 3.1, the twenty-first century computer standard expansion interface. The current (2016) motherboard is mainly used USB2.0 and USB3.0 interface, the USB version can be a very good compatibility. USB with a 4-pin (USB3.0 standard for the 9-pin) plug as a standard plug, daisy chain can be used to connect all the peripherals, up to 127 external devices can be connected, and will not lose bandwidth. USB requires host hardware, operating system and peripherals in three areas to support work. Twenty-first century motherboards are generally used to support the USB function of the control chipset, the motherboard is also equipped with a USB interface socket, and in addition to the backplane socket, the motherboard is also reserved for the USB pin, you can connect through the connection To the front of the chassis as a front USB interface to facilitate the use (note, in the wiring to carefully read the motherboard manual and according to map connection, do not connect the wrong equipment damage). And the USB interface can also be through a dedicated USB cable to achieve dual-machine interconnection, and can be extended through the Hub more interfaces. USB has the advantages of fast transmission speed, easy to use, hot plug, flexible connection, independent power supply, etc., can connect mouse, keyboard, printer, scanner, camera, charger, flash drive, MP3 player, mobile phone, digital camera, mobile Hard drive, external drive / floppy drive, USB card, ADSL Modem, Cable Modem, etc., almost all of the external equipment.
Theoretically the USB interface can be used to connect up to 127 peripherals such as mice, modems and keyboards. Since its introduction in 1996, USB has been successfully replaced by serial and parallel port, and become a twenty-first century personal computers and a large number of intelligent devices will be one of the interface.

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