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Universal Serial Bus: Usb Revision
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Although the Universal Serial Bus (USB) is an integral part of many computers, Java does not officially support USB. Getting the Java programs to interact with arbitrary USB devices ... requires either a third-party Java/USB API or person's own Java/USB API. Tags: USB, Programming Languages, Java, Software Development, Software/Web Development White papers 2006-07-06
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Universal Serial Bus (USB) is a serial bus standard to interface devices. A major component in the legacy-free PC, USB was designed to allow peripherals to be connected using a single standardized interface socket, to improve plug-and-play capabilities by allowing devices to be connected and disconnected without rebooting the computer (hot swapping). Other convenient features include powering low-consumption devices without the need for an external power supply and allowing some devices to be used without requiring individual device drivers to be installed.
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Of the many new serial protocols that have popped up in response to these problems, USB (Universal Serial Bus) currently seems to be reigning supreme. One of the reasons that USB was implemented was to replace existing serial and parallel ports on computers. USB has several advantages for this application, which is why it has been included in most of the new PCs that have been shipped since Windows 98 was released in late June of 1998:
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Short for Universal Serial Bus, USB is a standard that was introduced in 1995 by Intel, Compaq, Microsoft and several other IT computer companies. USB 1.x is an external bus standard that supports data transfer rates of 12 Mbps and is capable of supporting up to 127 peripheral devices. The image to the right is an example of a USB device, the SMC EZ Connect Wireless Bluetooth adapter adds Bluetooth connectivity for your computer.
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In a compact Universal Serial Bus (USB) stick form factor, the eZ430-F2013 is the world's smallest, complete MCU development tool. Alternative target boards for the eZ430 tool include the T2012 board from TI and the MSP-Mojo board from TI third party, Quickfilter Technologies as well as the limited edition capacitive touch target board given out at 430 Day 2007. The MSP430 Experimenter's Board includes two 16-bit MSP430 devices and a TI (Chipcon) radio frequency (RF) module connecter for developing low power wireless networks. For more information on eZ430-F2013 tool and the MSP430 Experimenter's Board, see http://www.ti.com/ez430 or http://www.ti.com/430expboard, respectively.
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The USB [Universal Serial Bus] spec defines the Mechanical, Electrical and Protocol layers of the interface. Cables and connectors are fully defined. USB defines 2 types of hardware, Hubs and Functions. Up to 127 devices may be connected together in a tiered Star topology. The limiting factor being 7 address bits. The physical wire segments are point-to-point between a Host, Hub, or Function.
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Usb Revision