A computer system that connects two incompatible services such as a commercial online service and the Internet.
GDI (graphics device interface)
GDI Windows is a complicated operating system that's divided into several distinct areas. The graphics display interface, or GDI, is the part that draws all the graphical objects--including common elements such as scroll bars and lines--to the screen. GDI functions are handled by a program called gdi.exe that loads automatically when you start Windows.
GIF
Graphical Interchange Format is a commonly used graphics file format for image files on the Internet.
GPS (Global Positioning System)
The Global Positioning System is a satellite navigation system used to determine terestrial position, velocity, and time. Once exclusively used by the U.S. military, the GPS is now available to the worldwide general public. The GPS system relays satellite signals that can be processed by a GPS receiver.