The Global Positioning System (GPS) satellites determine the longitude and latitude of the GPS receiver once three satellites triangulate the receiver's position. The longitude and latitude can then be transferred to a map on a Mobile GPS device in a car or in a hand. The map program in the mobile GPS device is responsible for directing you to your destination. If you make a wrong turn, the GPS receiver shows your changed position to the mapping program, which should make adjustments in directions.
Instructions
1. Look into the highly rated TomTom GO 720 to add a small mobile GPS device to your car (see Resources below). You will enjoy the state-of-the-art text to speech directions, Bluetooth compatibility and multimedia applications when you don't need directions. The Map Share community used with the TomTom GO 720 provides updates to maps as quickly as possible. The GO 720 features a 4.3-inch touchscreen and a resolution of 480x272. The GO 920 adds more features like voice address input (see Resources below).
2. Go with a wide screen on your GPS device with the Harmon Kardon Guide Play GPS-510. You get the industry standard vocal directions plus music and video playback when directions aren't needed. The four inch WQVGA display uses the standard 480x272 pixel resolution. Simply touch the screen to work your way through the intuitive menus to choose your destinations and functions (see Resources below).
3. Try the easy to carry 5.2 ounce Garmin Nuvi 200 if you will use the system to add navigation to two or more vehicles. The Nuvi 200 features a three and a half inch touchscreen with a 320x240 resolution. You get the basics of navigation and voice prompts. The Nuvi 350 and 660 have additional features, better performance, travel guides and even foreign language dictionaries (see Resources below).
4. Use the four and a third inch touchscreen on the sleek Mio C520 to navigate through menus for navigation and other functions, like playing media. The 480x272 pixel resolution also provides 65,000 colors for better clarity on the screen. TeleNavigation provides the maps needed and over 6 million points of interest (see Resources below).
5. Read car GPS reviews at CNET before making any purchase (see Resources below).
Tags: Resources below, 480x272 pixel, 480x272 pixel resolution, inch touchscreen, longitude latitude
