An acronym for Global Positioning System. GPS is a satellite navigation system used to determine ground position and the factors of speed and direction. Though it was created and originally used by the U.S. military, GPS is now available to the general public all over the world. It is a very reliable for of directional navigation in aircraft, both commercial and private. It is currently being installed in a number of luxury cars, complete with an LCD map that shows the driver exactly where in the world they are.
Technology is also handheld now in several different forms of backpacking assistants.
The advanced car GPS units can actually speak the directions to a certain destination and tell the driver when to turn and in which direction. Depending on the service, there are also variations that give alternative routing in the event of a road closure or natural disaster. GPU Used primarily for 3D applications, GPU is an acronym for a graphics processing unit. It is a single chip processor that creates lighting effects and transforms objects every time a 3D scene is redrawn. Lifting this burden from the CPU frees up cycles that can be used for other jobs.