U

Uniform Resource Location (URL)
address of an Internet location, such as a specific Web page.

Uninterruptible Power Supply (UPS)
protection against power failure in which files can be stored before power to the system is lost.

Unstructured report
a type of report that is not routine in nature and therefore cannot be designed in advance.

User interface
computer system capability that allows the computer user to communicate with the system, such as to respond to prompts or questions that appear on the display screen.

Username (user ID)
the identifying name of a computer user, which serves as part of the person's email address.

Utility program
various "housekeeping" capabilities available for computer systems, such as rearranging data on a disk into a more efficient arrangement.