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video mode the setting of a video adapter. The mode will be set to either video, for
displaying images or to text for displaying ASCII characters.
viewer a program whose primary purpose is for the display of graphic files.
virtual server
viral marketing refers to the promotion of products through word of mouth and
email. Viral marketing, however, is not related to spamming, but to small groups
of people sharing exciting information via email. For example, the popular
movie The Blair Witch Project was a success due to the buzz created over the
Website and the upcoming movie, months in advance of its release.
virtual an imaginary conceptualization of something real. For example, many feel
that the Internet is a virtual world unto itself. The term takes on many uses in
the computer world as a wide variety of devices and software exist for the sole
purpose of providing simulations of reality.
virtual desktop a computer desktop displayed on an external monitor allowing for
better resolution and larger display size. Sometimes the desktop image sent to
an outside monitor from a portable computer such as a laptop or notebook is referred
to as a virtual desktop.
virtual hosting a server that stores more than one Website on its hard disk and
offers them to users on the Internet is said to be a virtual hosting service provider.
Virtual hosting is the opposite of dedicated hosting. This is an arrangement
where a single Website is stored on a single server and does not have to
share space with other sites. Problems do not usually arise unless a site being
hosted by the virtual server begins to pick up a significant amount of new
traffic. This can slow access to all pages hosted there. Offering Web pages
using virtual hosting is far less expensive than using a dedicated service.
virtual memory a way of expanding the memory capabilities of a computer by
using disk space for memory functions. With virtual memory, a program stores
memory addresses on the hard disk, called pages, and are only used when
called upon. It is the job of the operating system to distinguish which addresses
reside in memory and which must be called up from the disk.
virtual reality a realistic environment often used for entertainment, created using
computer hardware and software that stimulates the human senses of sight,
sound, touch an occasionally taste and smell. The user wears special glasses or
goggles, gloves, and headphones. A virtual reality experience uses three dimensional
images, stereo sound, and tactile stimulation to give the user a feeling of
actually living through a physical experience.
virtual server A server that stores and delivers more than one Website. see virtual
hosting.