G.703
ITU-T Recommendation G.703, "Physical/Electrical Characteristics of Hierarchical Digital Interfaces".

G.704
ITU-T Recommendation G.704, "Synchronous Frame Structures Used at Primary and Secondary Hierarchy Levels".

G.804
ITU-T Recommendation G.804, "ATM Cell Mapping into Plesiochronous Digital Hierarchy (PDH)".

G2
A real-time real-time expert system expert-system from Gensym Corporation.

gadget
A dialog control that presents application output in some form and provides a way for an application to receive administrator input.

gadget library
Object-oriented abstractions for manipulating dialogs.

GAIA
GUI GUI Application Interoperability Architecture project of OSF OSF

GAMS
Guide to Available Mathematical Software at NIST

GANDALF
A software development environment from Carnegie Mellon University.

Garbage collection
The process of reclaiming storage which is no longer in use.

Garnet
A user interface development environment for Common Lisp Lisp and X or Macintosh from Carnegie Mellon

gateway
A connection between one network and another, usually networks of different types.

Gateway
In e-mail systems, a system used to send and receive e-mail from a different e-mail system, such as a mainframe or the Internet. Gateways are supported by Message Handling Services (MHS).

gateway
See router /r.

GBIP
General Purpose Interface Bus (IEEE IEEE 488).

GCA
Graphic Communications Association.

GCAC
Generic Connection Admission Control: This is a process to determine if a link has potentially enough resources to support a connection.

GCC
Gnu Gnu C Compiler.

GCRA
Generic Cell Rate Algorithm: The GCRA is used to define conformance with respect to the traffic contract of the connection. For each cell arrival the GCRA determines whether the cell conforms to the traffic contract. The UPC function may implement the GCRA, or one or more equivalent algorithms to enforce conformance. The GCRA is defined with two parameters: the Increment (I) and the Limit (L).

GDB
Gnu Gnu DeBugger.

GDMO
Guidelines for the Definition of Managed Objects. A standard (ISO/IEC 10165-4 / ITU-T Rec. X.722) for defining data models on ASN.1 ASN.1

GEANT
A simulation, tracking and drawing package for HEP

GEI
A German software engineering company.

General Protection Fault (GPF)
Effectively, a crash of a Windows NT system.

Generic Markup
In computerised document preparation, a method of adding information to the text indicating the logical components of a document, such as paragraphs, headers or footnotes: SGML SGML is an example of such a system. Specific instructions for layout of the text on the page do not appear in the markup.

Genericity
The possibility for a language to provided parameterized modules or types. e.g. List(of:Integer) or List(of:People).

Genesia
An expert system expert-system developed by Electricite de France and commercialised by STERIA (Paris).

GEN-
X An expert system expert-system developed by General Electric.

GEOS
An object-oriented operating system project

GFC
Generic Flow Control: GFC is a field in the ATM header which can be used to provide local functions (e.g., flow control). It has local significance only and the value encoded in the field is not carried end-to-end.

ghostscript
The gnu gnuPostScript PostScriptinterpreter.

ghostview
An X window interface to the ghostscript ghostscriptinterpreter.

GID
See group ID (GID) /.

GIF -
A graphic format commonly found on web pages. Its main claim to fame is its ability to handle artwork very well.

GIF
Graphics Interchange Format: a standard for digitised images compressed with the LZW LZW algorithm - . /Graphics

GIF
See Graphics Interchange Format (GIF) /.

GILS
Government Information Locator Service. A plan for a decentralised collection of information locators and associated public services to find information throughout the US government.

GINA
Generic INteractive Application. A toolkit of useful classes and functions for authoring GUI GUIs built on CLM, CLX CLX and CLOS CLOS, from GMD GMD

GKS
Graphical Kernel System: a standard for graphics I/O (ANSI X3.124) - . /Graphics

GKS-3D
The three-dimensional version of GKS GKS, a standard for graphics I/O (ISO 8805).

GL
A graphics package from Silicon Graphics.

glue record
A record in DNS /d to provide the IP addresses for a subdomain specified as self-responsible via a previous NS /d record.

GLUT
OpenGL OpenGL Utility Toolkit - . /GLUT

GMD
Gesellschaft fuer Mathematik und Datenverarbeitung (German Institute for Mathematics and Data Processing), D-53754 Sankt Augustin - . gopher://vm.gmd.de/

GNAT
The GNU GNU NYU Ada Ada 95 compiler - . /GNAT

GNU
GNU 's Not UNIX: a popular range of portable software from FSF FSF, upwardly compatible with UNIX UNIX - . /GNU

GOOD
An object-oriented object-oriented framework framework for graphical applications from TU Ilmenau running under X Windows X-Window-System with special support to IRIS GL, OpenGL OpenGL, VOGL, etc. - . /GOOD

Gopher
A Campus Wide Information System designed at the University of Minnesota

Gopher
An Internet tool that organizes topics into a menu system that users can employ to find information. Gopher also transparently connects users with the Internet server on which the information resides.

GOSIP (Government OSI Profile)
AU.S Government procurement specification for OSI (Open System Internet connection) protocols.

GPF
See General Protection Fault (GPF) /.

GPIB
General Purpose Interface Bus: an 8-bit parallel bus (IEEE IEEE 488).

GPM
General Purpose Macrogenerator written by C. Strachey around 1965. The author said "It contains in itself all the undesirable features of every possible machine code... It can also be almost impenetrably opaque".

GPRS:
General Packet Radio Services is an ETSI standard and is the first implementation of a packet switched wireless protocol, is that GPRS only uses the network when data is to be sent. GPRS enables uses to send data at speeds of up to 115 Kb per second. GPRS is often referred to as “always on” technology. Because it is particularly well suited to a “burst” type of data transmission, it effectively brings IP capabilities (e-mail, Internet access) to a GSM network.

GPS:
Global Positioning System is a satellite base radio positioning system that uses the US’s NAVSTAR system to accurately provide positioning, velocity and time information to GPS device users.

GQM
Goal/Question/Metrics. A software engineering assessment method by V. Basili.

graft
Add a branch to a multipoint router network when a site on that branch subscribes to or asks to join a multicast /m call.

Grammar
A grammar is a mathematical system for defining a language, as well as a device for giving the sentences in the language a useful structure.

Grapevine
A distributed system project .

graphical user interface (GUI)
A screen-based (as opposed to a line-based) interface between the user and an application.

Graphics Interchange Format (GIF)
A graphics format pioneered by CompuServe that has a maximum of 256 colors, interlacing, and transparency (one color can be defined as transparent, allowing the background color to be visible); one of the most common graphics formats on the World Wide Web (WWW) /w. See also Joint Photographic Experts Group (JPEG) /j.

GRAS
A public domain graph-oriented database system for software engineering applications from RWTH Aachen

GRASPIN
An Esprit Esprit project to develop a personal software engineering environment to support the construction and verification of distributed and non-sequential software systems.

Grasshopper
An experimental operating system for persistent systems

GRIB
GRid In Binary. World Meteorological Organization data format - . /SciDataFormats

group alias
A mail alias for a group of people; a mailing list. Consists of the group alias or mailing list, a request alias for submission and resignation requests, and an owner alias for problems.

group ID (GID)
A numeric value for the user account's group permissions.

Groupware
see CSCW CSCW.

GROW
GNU GNU Remote Operations Web. An architecture for building networked applications and services using WWW.

GSM:
Global System for Mobil communication is the prevailing mobile standard for Europe and the Asia Pacific region. GSM operates in the900 MHz and 1800 MHz (1900MHz in the US) frequency bands.

GUI
A graphical user interface. GUIs let you use the computer by pointing at things with a mouse rather than typing commands. The most common Unix GUIs are Motif, OPEN LOOK, and the X window system. GUIs sometimes are called windowing systems.

GUI
Graphical User Interface.

GUI
See graphical user interface (GUI) /.

Guide
A hypertext hypertext system from the University of Kent (GB) and OWL for displaying online documentation .

GUIDE
Graphical User Interface Development Environment from Sun.

guidelines
(Security.) Recommended actions to follow in implementing the current policy /p. Guidelines should always be considered in the context of the best business practices. Guidelines change with the bank computer environment. Adherence to guidelines is advisable but discretionary.

GUILE
An interpreter for the GROW GROW project.

gunzip
The decompression utility corresponding to gzip gzip.

gzip
A compression compression utility available with the gnu gnusoftware.