U
- UAC
- Uniform Resource Locator (URL)
The address that identifies a web page to a browser. Also known as a web address.
- Universal Serial Bus (USB)
An external bus standard that supports data transfer rates of 12Mbps and that can connect up to 127 peripheral devices, such as keyboards, modems, and mice.
- UNIX
A competing operating system to Microsoft Windows, developed in the 1960s and 1970s by AT&T. Not typically used on consumer PCs.
- upgrade
To add a new or improved peripheral or part to your system hardware. Also to install a newer version of an existing piece of software.
- upload
The act of copying a file from a personal computer to a website or Internet server. The opposite of download.
- URL
- USB ...
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