U
U3 Smart Derives : Special type of USB flash drive that includes pre-installed software accessed through a Windows type interface.
Ultera Mobile PC (UMPC) : Computer small enough to fit in one hand.
Ultra XGA (UXGA) : Viedo standard with the resolution of 1600x 1200.
Underflow : In computation, a situation that arises when a number is too small to be represented in the chosen format.
Undo :To reverse the effects of most recent operations/actions.
Undock : To detach a laptop or other portable computer from docking station.
Unicode : 16-bit coding scheme that has the capability of representing more than 65,000 characters and symols.
Uniform Resource Locator : specific Unique Internet address for a resource or web pages.
Uninstaller : Utility program that removes a program , as well as any associated entries in the system files.
Uninterruptible Power Supply (UPS): Battery-powered backup system that provides enough electricity during a power outage.
Universal Serial Bus (USB) : A common interface for connecting multiple peripherals to a computer as needed.
Universal Serial Bus Port :port that can connect up to 127 different perpherals devices with a single connector type.
Universal product code (UPC) :Bar code used by retail and grocery stores.
Universal Media Disk (UMD) : Mini-DVD used specifically with the PlayStation Portable Handheld game console.
Unmcompress : To restore a compressed ,or zipped file to its original form.
Unsubscribe : process of a user removing his or her e-mail name and address from the mailing list.
Unzip :to restore a compressed to its original form.
Upload: To transfer information from a client computer to a host computer (Server) on Internet.
Uploading : Process of transfering documents, graphics and other information from a client computer to server on Internet.
UPnP (Universal Plug and Play) : technology for standardizing connections between different devices.
USB flash drive :Flash memory device that plugs in a USB port on a computer or portable device.
USB Hub : Device that plugs in a USB port on the system unit and contains multiple USB ports in which cables from USB devices can be plugged.
Usenet (Users’ Network):Bulletin board system or Internet site that hosts thousands of newsgroups.
User : Anyone who communicates with a computer or utilizes the information it generates.
User ID/User Name : Unique combination of characters , such as letters of the alphabets or numbers that indentifies a specific user.
User Interface : Portion of software that defines how a user interact with the computer ,including how the user enters the data and instruction and how information is displayed on screen.
User Response : An instruction a user issues by replying to a question displayed by a program.
Utility : Type of system software that allows a user to perform maintenance type tasks,related to managing a computer its devices or its programs.
UTP (unshielded twisted pair): Cable consisting of pairs of wires twisted together and insulated but not provided with a metallic shield.
