Browse the glossary using this index

Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL

Page: (Previous)   1  ...  27  28  29  30  31  32  33  34  35  36  (Next)
  ALL

V

Virtual Teacher Centre

Part of the National Grid for Learning, this is a source of resource materials for the classroom, the library, school management, career development, etc.

Virus Protection

A virus is a code which can either lie dormant in a computer and be not particualry harmful, but it can can also cause computers to shut down, lose of data, and even make the computer need to be reformatted. To prevent this Virus Protection has been created. There are many different programs for Virus protection or Anti-virus software, some working better than others, but the aim of all the programs is to protect your computer from harmful and useless virus's.

Voice conferencing

Several people can communicate audibly at a distance, either via the Internet, by means of a microphone attached to each computer, or via ordinary telephone lines.

VR

virtual reality

W

W

Also known as: Watt Watt (W) is the standard unit for measuring power, and it indicates the rate at which energy - for example electrical or electromagnetic energy - is radiated, absorbed, or dissipated. One Watt is equivalent to using one Joule of energy per second. The RF and audio power available from a mobile phone will determine its capacity to provide good signal strength, which is necessary in order to maintain satisfactory communications with users on the phone network. There has to be a compromise however, as the higher the power used by the phone, then the greater will be the drain on its battery. The power can be determined by calculating the product of the voltage and the current (i.e. Watts = Volts x Amps).

Wallpaper

Wallpaper is a picture or graphical image that fully covers the display screen of a computer, mobile phone or other equipment with a visual monitor. This 'wallpaper' is used to customise the background environment on the user's screen, and to give the equipment a personalised or corporate appearance. Wallpaper is available for free download from many websites, although there are also specialist companies that sell designer wallpaper

WAN

wide area network


WAP

Also known as: Wireless Application Protocol WAP (Wireless Application Protocol) is a common global standard, which defines the way in which Internet communications and advanced non-voice services are provided on wireless mobile devices, such as digital mobile phones and Personal Digital Assistants. The current version of this protocol is WAP 2.0, and it is fast becoming the standard way for mobile devices to access Internet services, by communicating with a server installed in the mobile phone network. A mobile device can therefore combine telephony services with the limited capacity of mobile terminal displays, and so provide the user with a microbrowser. A WAP enabled phone provides interactive access to the Internet, and to services such as online news and information, e-commerce transactions, online banking, e-mail messaging, Internet Relay Chat (IRC), and a host of new services still in development. Subscribers use WAP to access websites and pages that have been converted for WML (Wireless Markup Language), which are stripped down to their basic text format, and this is more suitable for the limited display capabilities of mobile devices. WAP works with multiple standards and is supported by most modern mobile networks, such as GSM, GPRS, and UMTS, and in the future equipment and networks that use WAP will be more compatible, regardless of the manufacturer. WAP is the mobile equivalent of HTTP (HyperText Transfer Protocol), and has been developed through the cooperation of the world's major telecommunications and software companies, their activities being co-ordinated through the WAP Forum. The WAP Forum has a website at www.wapforum.org. Some manufacturers claim that their handsets have WAP 2.0 browsers; this is often a re-branding of an XHTML-MP browser, the version number representing XHTML replacing WML for mobile content markup. An alternative system standard to WAP is i-Mode

WAP Identity Module

Also known as: WIM WIM (WAP identity module) is a security module that provides a more secure environment when using WAP related applications and services on a mobile device via a WAP gateway. A WIM allows the user to store certificates and digital signatures

Watt

Watt (W) is the standard unit for measuring power, and it indicates the rate at which energy - for example electrical or electromagnetic energy - is radiated, absorbed, or dissipated. One Watt is equivalent to using one Joule of energy per second. The RF and audio power available from a mobile phone will determine its capacity to provide good signal strength, which is necessary in order to maintain satisfactory communications with users on the phone network. There has to be a compromise however, as the higher the power used by the phone, then the greater will be the drain on its battery. The power can be determined by calculating the product of the voltage and the current (i.e. Watts = Volts x Amps).


Page: (Previous)   1  ...  27  28  29  30  31  32  33  34  35  36  (Next)
  ALL