A form of networking. Unlike conventional networks that focus on communication among devices, grid computing harnesses unused processing cycles of all computers in a network for solving problems too intensive for any stand-alone machine.
A well-known grid computing project is the SETI (Search for Extraterrestrial Intelligence) @Home project, in which PC users worldwide donate unused processor cycles to help the search for signs of extraterrestrial life by analyzing signals coming from outer space. The project relies on individual users to volunteer to allow the project to harness the unused processing power of the user’s computer. This method saves the project both money and resources.
Grid computing does require special software that is unique to the computing project for which the grid is being used.
Slang term for an online gamer who purposefully cause problems for other gamers, in or outside the game itself.
(pronounced grawk) A slang term used to describe a total and thorough, or intuitive, understanding of something without really having to think about it. The word grok was first used by author Robert A. Heinlein in the science fiction novel, “Stranger in a Strange Land”.
A class of software that helps groups of colleagues (workgroups) attached to a local-area network organize their activities. Typically, groupware supports the following operations: scheduling meetings and allocating resources e-mail password protection for documents telephone utilities electronic newsletters file distribution Groupware is sometimes called workgroup productivity software.
- guard band
Also called a frequency guard band, a narrow frequency band between adjacent channels in multiplexing that is kept unused to prevent the channels from overlapping and causing crosstalk among modulated signals. Guard bands are commonly used in FDM but are also used in any data transmission method that relies on frequencies. Also spelled guardband.
- guard time
A time interval left vacant (i.e., during which no data is sent) on a transmission channel that can be used for synchronization and/or compensating for a signal distortion. The guard time provides a safety margin against symbol interference in the time between sequential operations such as transmission, encoding, decoding or switching.