A GPS (Global Positioning System) is a small electronic device used for navigation. Common GPS types include portable, automotive and marine types.
The most important difference between these types is the type of maps that come with the device.
Portable GPS devices are commonly used by hikers and
outdoor people to find their way in the wilderness. Therefore, the GPS maps of these devices contain the names and locations of rivers and other outdoor landmarks.
Automotive GPS devices are used by drivers to find their way from place to place. Therefore, the GPS maps of these devices contain the names of highways,
roads, restaurants and other places of interest to the highway traveller.
Marine GPS devices are used by boating enthusiasts to navigate in the ocean or a country's waterways. In addition to containing the names of common waterways
and landmarks (such as lighthouses) they also can display location as latitude and longitude to aid in ocean navigation.
Therefore, when purchasing a GPS it is important to be sure it is loaded with the correct maps for your region of interest.
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