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In information technology, Universal Serial Bus (USB) is a serial bus standard to interface devices.
USB was designed to allow many peripherals to be connected using a single standardized interface socket and to improve the plug-and-play capabilities by allowing devices to be connected and disconnected without rebooting the computer (hot swapping). Other convenient features include providing power to low-consumption devices without the need for an external power supply and allowing many devices to be used without requiring manufacturer specific, individual device drivers to be installed.
USB is intended to help retire all legacy varieties of serial and parallel ports.
USB can connect computer peripherals such as computer mouse, keyboards, PDAs, gamepads and joysticks, scanners, digital cameras, printers, personal media players, and flash drives.
For many of those devices USB has become the standard connection method.
USB was originally designed for personal computers, but it has become commonplace on other devices such as PDAs and video game consoles.
As of 2008, there are about 2 billion USB devices in the world.[1] Source: Wikipedia (http://en.wikipedia.org/wiki/Usb)
Here are the best overviews and tutorials for usb:
- tutorial, 4 stars
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Embedded USB - a brief tutorial
If you need your embedded application to talk to a PC then increasingly the way to go is USB. Partly this is because of the performance it can supply but also for the very practical reason that many PCs and most portables no longer have parallel or serial ports.
But unlike the good old parallel or serial cables these interfaces are far from simple to implement, debug or program.
Here is a quick summary of some terms you might encounter.
- tutorial, 4 stars
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A Step-By-Step Guide to Developing USB I/O Devices
This guide takes a step-by-step approach to the development process and an example design is implemented using this process.
This example is a simple buttons and lights design; it includes an 8 bit input port and an 8 bit output port that can be controlled by the PC host or from the I/O device.
This design is easily expanded to cover other applications.
Other examples are available.
- overview, 3 stars
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An Introduction To USB
Popular in the desktop PC market for several years now but now moving into the embedded field, USB (universal serial bus) is the serial bus which can realize the Plug&Play connection for PC peripherals.
To browse all sites for 'USB,' click
here
.
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