Gigahertz (GHz)
Abbreviation for gigahertz. One GHz represents 1 billion cycles per second. The speed of microprocessors, called the clock speed, often is measured in gigahertz. For example, a microprocessor that runs at 200 GHz executes 200 billion cycles per second. Each computer instruction requires a fixed number of cycles, so the clock speed determines how many instructions per second the microprocessor can execute. To a large degree, this controls how powerful the microprocessor is.
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A hidden Windows 95 configuration file, ending with a .gid extension, used by the Windows Help system. The first time you open a Windows help file, the Help system analyzes the file and creates an associated GID file that helps speed up access to help file topics. You can delete a GID file without harming […]
- Graphic Interchange Format (GIF)
Pronounced jiff or giff (hard g) stands for graphics interchange format, a bit-mapped graphics file format used by the World Wide Web, CompuServe and many BBSs. GIF supports color and various resolutions. It also includes data compression, but because it is limited to 256 colors, it is more effective for scanned images such as illustrations […]
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Short for Graphical Identification and Authentication dynamic-link library (DLL). The GINA is a replaceable DLL component that is loaded by the Winlogon executable. The GINA implements the authentication policy of the interactive logon model and is expected to perform all identification and authentication user interactions. [Source: MSDN Library]
- Geographic Information Systems (GIS)
Short for Geographic Information Systems, tools used to gather, transform, manipulate, analyze, and produce information related to the surface of the Earth. This data may exist as maps, 3D virtual models, tables, and/or lists. GISs can be as complex as whole systems that use dedicated databases and workstations hooked up to a network, or as […]
- geographic information science (GISci)
Short for geographic information science. The field of study involving GIS technology, with focus on sensing, cartography, surveying, spatial statistics, computer science and other related fields. Synonymous with GI Science.