UAE                Umbiqious Amiga Emulator. Program to emulate a Commodore Amiga
                   on PCs, Macs and Unix machines.


UDMA               Ultra Direct Memory Access disks. Type of very fast IDE disks.


UDP                User Datagram Protocol. Used by various IP protcols such as 
                   DNS, WINS, Authentication and Security protcols.
									 
UHCI               Universal Host Controller Interface for USB ports (see OHCI).


UML                Unified Modelling Language. Language used to design programs.

Upload             Process where files are copied from your local computer to a 
                   remote computer using software such as FTP. (See Download).

UPS                Uninterruptable Power Supply. A battery backed up power supply 
                   which can protect computer equipment from spikes, surges and 
                   power loss for short periods of time.

URL                Uniform Resource Locator. The address of a web site such as
                   http://www.yahoo.com/.
									                    
Utility            Name given to small programs that do a small function such as look
                   at a text file, view a picture or animation or some other small
                   function. They are stored in the Utilities drawer.


UTP                Unshielded Twisted Pair. Network cable that uses pairs of twisted
                   cable for high speed data transfer.


USB                Universal Serial Bus. New standard which replaces the serial,
                   parallel, game and floppy ports with a faster port which can do
                   all of the above and allow devices to be chained together and
                   be 'hot-swappable'.


UUX                Uuencoding. Encoding method for sending binary files as ASCII
                   files especially via E-Mail. Replaced by MIME.