Detecting USB devices

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Hi all,
I want to know answer for following questions.
How operating system detects the USB devices? How the operating system communicates with USB ports? What is the mechanism behind that?
I am using windows xp.
Thanks in advance.

Posted 5-Mar-12 6:16am

psgviscom

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pietvredeveld · Answer 1 · 2012-03-05T08:03:00

Solution 1

There is a device driver in between. The device driver detects (by reading the hardware or with help of the bios) the usb device. The device driver reports this to the OS. Same for reading and writing of the OS. The OS sends commands to the device driver to read or write data from / to the device.

Piet

Posted 5-Mar-12 8:03am

pietvredeveld

Updated 5-Mar-12 8:04am

v2

Chandrakantt · Answer 2 · 2012-03-05T18:50:00

Solution 2

USB devices are detected by driver which uses PNP Technology[^] for detection of Plug and PLay devices like USB.

Posted 5-Mar-12 18:50pm

Chandrakantt