GPS Global Positioning System
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Trying to figure out where you are and where you're going with the help of GPS no problem !!!
What is GPS ?
GPS stands for Global Positioning System and is a worldwide navigation system formed from a constellation of 24 satellites and their ground stations. GPS uses these "man-made-stars" as reference points to calculate positions accurate to a matter of meters. Within seconds GPS can determine your position, direction, velocity, altitude, distance and time to destination.
History
In 1977, the U.S. Department of Defence decided that the military needed a super precise form of worldwide positioning for their military vehicles and the weapon system. The U...