UDP (User Datagram Protocol) is an alternative communications protocol to Transmission ControlProtocol (TCP) used primarily for establishing low-latency and loss-tolerating connections between applications on the internet.
USB (Universal Serial Bus) USB is now the most used interface to connect devices like a printer, mouse and scanner to a personal computer. USB flash memory drives are data storage devices used with cameras and games consoles as well as computers and laptops.
Uninterruptible Power Supply (UPS) A device containing a battery which supplies equipment with electricity during a power outage, so that data can be backed up and normal shut down of the hardware performed.
Unit testing A unit test is a method of testing the correctness of a single module of source code.
Uploading To upload information means to send information from one computer to another in a network.
URLs (uniform resource locators) URL is the term for the address of an Internet site (the ‘www’ address).
Usenet Short for Users Network is the largest discussion forum in the world. Usenet allows people with common interest to communicate with one another.
User documentation A set of instructions for the benefit of the program user.
Utility Software Software that protects and maintains the system software.