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  Computer Dictionary : U
 

Welcome to the eComputer Bay's Computer Dictionary - the free online dictionary of computer and technology terms. The goal of the Computer Dictionary is to not just define computer terms, but explain them as well.

Definitions of computer terms are helpful, but explanations with examples are even better. eComputer Bay contains hundreds of computer and technology terms, all with detailed explanations.

Use the Search Bar Below To Get Computer Definations And To Check out All the Terms Simply leave the Computer Term Blank...-



Computer Term

1. U

U is the standard unit of measurement for rack-mounted equipment. Racks can be used to house servers, hard drives, switches, routers, and other computer hardware. They are also used for mounting audio and video equipment. Standard racks are 24 inches wide, but vary in height. For this reason, the U unit measures how tall a rack-mountable hardware device is.

1U is equal to 1.75 inches. Therefore, a 1U piece of equipment is 1.75 inches tall and takes up one unit of rack space. A 2U device is 3.5 inches tall and takes up 2 units of rack space. Racks themselves are also measured in U. For example, a 10U rack could store 10 1U devices or 5 2U devices. It could also store 3 3U devices, with just enough space left over for your miniature Star Wars action figure.

2. UDDI (Universal Description Discovery and Integration)

Stands for "Universal Description Discovery and Integration." UDDI is a protocol that allows businesses to promote, use, and share services over the Internet. It is an OASIS Standard, which is supported by several major technology companies. Members include Microsoft, Cisco, Oracle, Avaya, Sun Microsystems, and others.

The UDDI protocol serves as a foundational tool that allows businesses to find each other and complete transactions quickly and easily. Companies that use the UDDI protocol can extend their market reach and find new customers while also finding other businesses that offer useful services to them. Because UDDI uses a standard format for describing business services, it is easy to search and find useful services offered from other businesses.

3. UNC (Universal Naming Convention)

Stands for "Universal Naming Convention," not just the home of the North Carolina Tar Heels. UNC is a filename format that is used to specify the location of files, folders, and resources on a local-area network (LAN). The UNC address of a file may look something like this:

\\server-name\directory\filename

UNC can also be used to identify peripheral devices shared on the network, including scanners and printers. It provides each shared resource with a unique address. This allows operating systems that support UNC (such as Windows) to access specific resources quickly and efficiently.

4. Username

A username is a name that uniquely identifies someone on a computer system. For example, a computer may be setup with multiple accounts, with different usernames for each account. Many websites allow users to choose a username so that they can customize their settings or set up an online account. For example, your bank may allow you to choose a username for accessing your banking information. You may need to choose a username in order to post messages to a certain message board on the Web. E-mail services, such as Hotmail require users to choose a username in order to use the service.

A username is almost always paired with a password. This username/password combination is referred to as a login, and is often required for users to log in to websites. For example, to access your e-mail via the Web, you are required to enter your username and password. Once you have logged in, your username may appear on the screen, but your password is kept secret. By keeping their password private, people can create secure accounts for various websites. Most usernames can contain letters and numbers, but no spaces. When you choose a username for an e-mail account, the part before the "@" is your username.



 
 



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