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Thanks to advancements in science and technology, we can now do tasks which were previously thought impossible. Some years ago when GPS units with traffic alerts were not available, there was no way to judge the best and shortest route to take from one point to another and one had to rely on printed maps to chalk out their traveling plans. In the past, some additional time spent while lazily driving from one point to the other did not make much difference. Nowadays, with the tight schedules most people follow, every minute is precious and people are on the lookout to save each second possible.

Today, most GPS units come with real-time mapping software that provide users with a map providing the best and shortest route from one point to another. A new breed of such units has appeared on the market which also provide other alerts apart from the shortest route information. For example, suppose you were traveling from one location to another following the generated map on your GPS unit and suddenly there is a road block in your path. A GPS unit with traffic alerts, like the TomTom 930T, will be fed this information from a centralized traffic server and will show you the exact location where the blockage has taken place along with the best alternative route or routes. This is no doubt a great inconvenience for the busy executive going to attend a meeting or to the doctor who needs to reach the hospital immediately to attend a life saving operation. This feature built into certain GPS units ensures that the busy executive will reach his meeting in time despite the jam on the highway; and will also ensure that the doctor reaches the hospital faster, since the GPS unit has provided him with details of an alternate route that is less congested. As you can see, there are many benefits of a GPS unit with built-in traffic alerts.

If you're in the market for an advance GPS receiver, TomTom GPS Deals offers many GPS units with traffic alerts. Also, you can buy a GPS traffic receiver accessory separate from the unit.

One never ceases to ponder at the marvels of science and how easy they have made our day to day lives. One just cannot imagine how these portable GPS units have changed the lives of many people for the better. It is amazing to see the various ways in which these marvels of science that rely on a cluster of 21 satellites have changed our lives. The golf player can now know the exact location he is away from the hole and therefore can adjust his shot accordingly. The cross country driver now is able to determine at what speed they are driving and their exact location along with the best route available for them to beat their fellow competitors.

Until a few years ago, these tasks would have been considered impossible, but today even sailors navigating the high seas to travel from one country to another rely on these portable GPS units. The portable GPS (global positioning system) unit or receiver can identify your exact location through the help of 21 active orbiting satellites that are stationed at a geo stationary location, 12,000 miles above the surface of the earth. This satellite system has been designed in such a way that they can track your movement and send details about your location to your GPS unit irrespective of your location on earth.

You might be high in the mountains or deep in the jungles or even crossing a great desert, yet these units will report back your exact location with unfailing accuracy. At any given point of time, 3 of these 21 satellites send signals to your GPS unit and the signal sent back to the satellite by this unit helps the software on the satellite to pinpoint your location by using a grid that tracks your location in latitude and longitude.

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Do you ever get frustrated with your golf game? Do you wish you had a bird's eye view of the course to eliminate some of the guesswork? If you answered yes, then a Golf GPS is for you. These rugged hand-held location devices allow you to measure the distance of your shot as well as how far it is to the greens, hazards and fairways.

Garmin brand GPSs manufacture the Approach G5 golf GPS. The course images are very detailed and come with courses found through the United States. It automatically locates you on the screen so you'll always know how far away the hole is. Also, if you want to measure the distance for your next shot, all you have to do is touch the point on the screen and it will precisely measure the yardage. The display is created in a way to make it easy to see without a glare, even in the brightest sunlight. In addition, the Approach G5 has a built-in digital scorecard which allows you to keep track of your scores on your home computer. With the Garmin golf GPS there are no memberships or annual fees.

Sonocaddie is another brand of golf GPSs. They have three different models - V300, XV2, V100. The V100 is the least expensive model, but still helps measure the distances to the grean and other targets. It is the smallest lightest GPS that Sonocaddie offers but does not have a color screen or large screen size. The XV2 is the next model up. The screen is slightly larger, but does not have a color screen. This model comes with the above plus a digital scorecard. The V300 comes with a large color screen complete with 3-D images. This model has the same features as the Garmin plus it allows you to change the points of the golf course on the spot if an element of the course has changed. With the Sonocaddie, however, you have to register to become a member which does have a minimal annual fee.

In conclusion, a Golf GPS device is a good way to improve your golf game if you need a little help with accuracy.

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