GET THE LATEST GPS MAPS FOR YOUR CAR: 
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As more people purchase GPS (global positioning system) devices for their cars, the manufacturers of these units are constantly creating new and more complicated versions. Both old and new GPS units can be updated with navigation software for the newest maps and directions available

Detailed Maps The latest versions of navigation software for cars offer the most detailed versions of maps available, including small streets that may less-known or recently constructed. It is important to update the software to integrate this knowledge into your GPS unit's database. Personalization Set up your preferences on the GPS device using the software on your computer. You can input your home address, language of instruction, favorite places and data for other countries that you plan on traveling to. Directions Once the GPS has located your position by triangulating signals received from satellites, and you have input your destination, the software determines the most direct route between the two. Certain software programs also monitor traffic flow and can provide alternate routes between two spots in the case of an accident or road delays. Syncing Devices Once you have installed the software on your computer, you can sync the GPS device to it. This allows the device to upload any new information that the program might have, as well as any preferences that you have changed since the last sync.