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Gateway A device or process that connects networks with different protocols. See Bridge and Router.

GB (Gigabyte) A unit of measure consisting of 1000MB.

GBps (Gigabytes per second) A performance measure used for mass storage devices and memory systems.

Genlock A standard for video-capturing cards that refers to the ability of the card to capture a single unique frame of video, rather than "sampling" pieces of adjoining frames.

Gflops (Gigaflops) 1 thousand million floating-point instructions per second.

GCR (Group Coded Recording) A hard-disk term for a storage process where bits are packaged as groups, with each group assigned to and stored under a particular code. Used by RLL drives.

GiB (Gibibyte) a unit of measure consisting of 1024MiB.

Gigabyte Approximately 1 billion bytes of data (actually 2 to the 30^th power, of 1,073,741,824 bytes).

GOPS (Giga Operations Per Second) In the case of multimedia processing, more GOPS translate to better video quality.

GPF error(General Protection Fault) A Windows error that occurs when a program attempts to access a memory address that is not available or is no longer assigned to it.

Graphics accelerator A type of video card that has an on-board processor that can substantially increase speed and boost graphical and video performance.

Graphics Coprocessor Similar to a math coprocessor in concept, a programmable chip that can speed video performance by carrying out graphics processing independently of the microprocessor. Graphics coprocessors can speed up performance in two ways: by taking over tasks the main processor would lose time performing and by optimizing for graphics. Video adapter cards with graphics coprocessors are expensive compared to those without them, but they speed up graphics operations considerably. Among the coprocessor's common abilities are drawing graphics primitives and converting vectors to bitmaps.

Green monitor A monitor that is designed to conserve energy by using such techniques as sleep or doze mode.

Green Standards Standards that mean that a computer or device can go into sleep or doze mode when not in use, thus saving energy and helping the environment.

Ground mat An antistatic mat designed for electronic workbenches to dissipate static electricity. It often uses a wire attached to the ground connection, in a standard electrical outlet.

Ground strap An antistatic wrist strap used to dissipate static electricity. Typically grounded by attaching an alligator clip to the computer chassis or to a nearby grounded antiststic mat.

Group files Windows 3.x files with the .grp file extension that contain information about a program group and related programs; program groups are displayed in Program Manager.

GUI (Graphical User Interface) A user interface, such as the Windows interface, that uses graphics or icons on the screen for running programs and entering information.