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The Universal Serial Bus (USB) (2)

Transfers and Drivers

Published in issue 292, October 2000

The Universal Serial Bus (USB) (2)
In the first part of this article we looked at the electrical characteristics of the USB standard. In this part we investigate the software and protocols used with this interface. Also included is a practical programming example.When any new device is first plugged in to the USB connector, it will signal its presence to the hub by pulling up one of the two data wires of the USB cable. Next comes the following sequence of events: ...

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