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GPS receivers are devices that get signals from orbiting satellites in order to determine the location or geographic position. There are very diverse applications of the Global Positioning System as the GPS receivers are used not only by the aviation, the marine and the military but by civilian consumers as well. The satellites on which the receivers depend circle the globe twice a day, and they are arranged in such a way on the orbit, that at any moment of the day, four of them should be present on the visible sky allowing one to find the right location or direction. The US military was intended to be the primary beneficiary, but the system and all of its applications were opened to the public after a while.

In terms of structure, you can choose between two types of GPS receivers: the stand alone GPS receivers and the items that require computer connection in order to function. The highest mobility is achieved with the stand alone devices, which perfectly matches car usage. Pre-installed software with route info, routing directions and maps is part of the built-in features of the most advanced GPS receivers. Some units even allow for updates on the local attractions in certain area. Garmin, Magellan, Mio, Navigon or TomTom are the companies that make the best GPS equipment available.

The devices that do not function independently require connection to a laptop, computer, PDA or smartphone. The connection of the two devices together can be established through Bluetooth technology, or with a USB or serial cable. You may have to get the navigation software separately from the GPS unit, because less advanced devices do not have it included. Although these GPS receivers seem to be more difficult to work with in the first place because of the installation, they are nevertheless preferred by users because they are cheaper.

While our ancestors had to read the stars to find their way, we can now manage to travel in the urban jungle and all over the world with automatic assistance from GPS receivers. Not all devices come with full world maps, particularly if you buy GPS modules. Most of the time, the user has to incorporate the map for a region or a country by using the download system of Google Maps for instance. From the avoidance of traffic jams, an increase in fuel economy and travel comfort to the possibility to choose the best routes possible and receive lots of practical information, GPS receivers are trustworthy travel companions that rarely fail.

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