2011

104 Glossary
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Toolbar
Here you will find small buttons that provide a function when clicked. For
example, you can cut out a selected object by clicking on the scissors.
U
Universal Plug & Play; UPnP
Universal Plug ‘n’ Play (UPnP) is a network protocol which enables data
exchange between different devices (PCs, hi-fi systems, video cameras, PDAs,
and webservers). UPnP allows various devices to participate in network-wide
communication, i.e. the initialization of functions and other device functions.
Long-winded configuring or installing of drivers is not required as the devices
can handle their own functions and data sources by themselves. Find out more
at www.upnp.org.
Hint: To work with UPnP you have to activate it first. This can be found under
"Options" ("Y" -> UPnP).
Update
An update or software update changes an existing program version to the
most current published version.
Updates make sure that a software application is up-to-date. This affects
programs with security functions above all, for example anti-virus or firewall
programs, to seal any security leaks. Updates are usually offered by the
software's manufacturer via the Internet.
USB
USB stands for "Universal Serial Bus", which is a system for connecting an
external device with the computer.
These devices (storage devices, printers, scanners, etc.) may be connected
and recognized while the computer is running. The system is a serial bus
system, where individual bits of a data package are transmitted one after the
other and not in parallel. A USB controller with USB ports on the computer is
required. Data transfer speed is based on the system clock of the USB speed.
USB 1.0, for example, has a data rate of 1.5 MBits/s, or up to 12 MBits/s.
There are various USB connectors with DIN IEC norms which are differentiated
by type. The most common connector is the USB type A, which is used for
USB sticks, for example.