GPS devices for cars are among the most widely used type of navigation devices. When choosing a navigation system, important factors include the number of installed maps, available coverage and updates. Other parameters include screen size, memory size, and performance.
History of GPS
GPS (Global Positioning System) technology dates back to the 1970s, when the United States Defense Department commissioned scientists to craete a way of locating ones current location anywhere on the planet using a simple device. The result was the GPS satellite project, which was soon implemented. In the 1990s, GPS was only available to the military, but a crucial turning point came in 2000. Until then, precision GPS navigation systems for use by the military deliberately limited accuracy to tens of metres because of concerns that the system could be abused by terrorists. Bringing GPS to the entire population has brought great benefits and significantly accelerated the evolution of the technology. Today you can buy GPS car navigation devices as well as handheld devices for tourists (handheld GPS navigation). They offer accuracy up to tens of centimetres and at an affordable price.