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Dated: Aug. 12, 2004

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U:

UART - See Universal Asynchronous Receiver Transmitter.

UDDI - Short for Universal Description, Discovery and Integration. A Web-based distributed directory that enables business to list they on the Internet and discover each other, similar to a traditional phone book's yellow and white pages.

Unerase Program - See data recover utility.

Unicode Worldwide Character Standard - A character set that provide 16-bits to represent each symbol, resulting in 65,536 different characters or symbols, enough for all languages of the world; a superset of the ASCII character set.

Uniform Resource Locator (URL) - An internet address used with HTTP in the format type: //address/path. The URL specifies the type of server on which the file is located the address of the server, and the path or location within the file structure of the server.

Universal Asynchronous Receiver Transmitter (UART) - A chip that converts parallel data from the bus into serial data that can be flow through a serial cable, and vice versa.

UNIX - A 32-bit, fully multitasking, multithreading operating system developed by AT& T in the 1960s. A powerful highly scalable operating system, UNIX ( and variants of it) is used to operate supercomputers, mainframes, mini computers and powerful PCs and workstation. UNIX generally features a command-line interface, although some variants of UNIX feature a graphical operating environment, as well.

Uploading - Sending a file to a remote computer the opposite off downloading.

Upward Compatibility - The capability of a hardware device or a software product to interact successfully with all succeeding versions of software or hardware.

URL - See Uniform resource locator.

USB - Short for Universal Serial Bus, an external bus standard that supports data transfer rates of 12 Mbps. A single USB port can be used to connect up to 127 peripheral devices, such as mice, modems, and keyboards. USB also supports Plug-and-Play installation and hot plugging.

Starting in 1996, a few computer manufacturers started including USB support in their new machines. It wasn't until the release of the best-selling iMac in 1998 that USB became widespread. It is expected to completely replace serial and parallel ports.

Usenet - A popular system of news group accessible on the Internet and maintained by volunteers.

User - The person who inputs and analyzes data using computer.

User Assistance Architects - The individual who develops the organization and structure of online documentation, such as Help systems or Tutorials.

User Documentation - Instructions or manuals that tell how to use a system.

User-Identification Code - A code that identifies the user to the system; often the user's full name, a shortened version of the user's name, or the user's e-mail name.

User Interface - The on-screen elements that enable the user to interact with the software.

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