No matter when and where we go out for a trip, we should always find a correct route so that we are able to continue our journey smoothly. However, in different occasions, we may need to get a direction in different ways.
In ancient time, our ancestors had many methods used to find out a right direction. Walking on the trails that connect and bind the country, they could get a route by comparing the position of objects in the nature like stars, the moon and the sun. With the advent of technology, people began to use tools such as a compass and other gadgets. Nevertheless, in such ways, they often just got a rough direction but not an accurate route. Without any navigation gadget, asking others for guidance is also an effective way when you have no idea where to go. When I go out alone, I usually find it easy to lose my direction in an unfamiliar town, and fortunately, there are often some local people who can tell me how to get to my destination. In the ancient or modern society, this method has been universally used during a number of journeys.
Due to the advancement of electronic products, nowadays we have kinds of navigation gadgets that can offer accurate guidance of direction during any trip. The GPS is a popular navigation system consisting of a network of 24 satellites, and it has a great number of applications already. Today anyone who has a GPS receiver can access the system freely. A GPS system can be built in many electronic devices like cell phone, watch and car DVD player
, providing helpful navigation in case you get lost on the way.
Among the GPS units, car GPS
is one of the essential model particularly designed for car navigation. Generally, you can use the auto GPS in an external SD card that can be plugged into the car DVD
system, or you can have an auto DVD
with built-in GPS system. A monitor mounted in the dashboard is necessary to display an electronic map with detailed information of time, location and direction. Furthermore, voice guidance of next turn is also provided in many latest models so as to reduce your distractions and enhance the security of driving. For many people, an auto GPS
can be effective save time and gas in the car trip, especially when they drive according to an unknown route.
During the long history of traveling in various places, people have come up with a variety of methods to determine a correct direction. The diversified solutions can be adapted under kinds of circumstances, and they come with some certain advantages and disadvantages. As for you, which one is the best?