How does GPS works when you are on move?

As you set directions on your GPS device ,it will pick up signals from the satellites and will pin point the direction to the location you haveb requested. Then by using the pre stored digital maps ,the GPS screen will reflect the best route to your destination on it's LCD screen.

How much will GPS cost ?Is it coast effective ?

The most dear models are designed for vehicles like cars and trucks and can cost you somewhere around RS 20.000(INR) or about 450 dollars(rate may vary according to the rate of the dollar).Then again at the other end of the scale there is a software available in the market to convert PDA into a GPS device ,this may be cost effective and cost you RS 4,000-5,000(INR) or 100 $ approximately.and your need is fulfilled. If it's not so then you have to shed RS2000 --7000(INR) for an external GPS receiver .Hand held model ,a bit bigger than the mobile handset is also found in the market ,and may be priced around 16000 Rupees (INR) onwards.Most of them could be charged when plugged into the lighter socket of the car,others GPS runs on batteries .

Main key features of GPS device:--Seek a GPS device that is as accurate as possible to get good results and with easy to follow directions and adjustable volumes so that the directions could be followed properly without any hassels Mapping quantity --and layout of streets and roads changes from time to time ,so get hold of digital maps and update at some cost ,ensure the maps stored in the GPS covers the areas that you really want ,after powering or charging up the device ,mordern GPS system should not take more than 15 seconds to fix your position .

Know the Pros and corns OF GPS devices :-

Most of the GPS devices can struggle at their most to get the signal among the sky scrapers ,tall trees or through a enclosed car or windscreen.But you can generally over come thisproblem by attaching a unit with an external anntena . Many GPS or PDA can also be made to use when you are a pedestrian .But before picking a PDA,you must consider whether the visual screen is large enough to adequately see the mapon the screen and if the audio quality is up to the mark then it is a most welcomed device.

The bottom line for this device is great If you are a traveler at the most ,and often get lost or want detours when traffic grid to a stop ,A GPS device is well worth its money ,other wise it is economical to consult a map rather than buying a GPS device.