Program memory is running memory, and 4M is storage memory. The navigation chart is greater than 100 K when it is running or not, but there are changes in the program. For example, when Gaode Map is not running, the program memory is 45M. Once running, the program memory becomes 90M, no problem. Once the navigation route of Gaode map is planned, the program memory will continue to increase, directly exceeding the set total 94M program memory, causing a crash.

Before updating the high-tech navigation memory card of the car, it is necessary to determine what kind of all-in-one car the car belongs to.

Navigation integrated machines are usually divided into two types: one is an external navigation memory card, which can see the card slot on the fuselage to facilitate the removal of the memory card, and this navigation machine can upgrade itself; The other is a built-in navigation memory card, and there is no card slot on the fuselage. This kind of navigation machine needs to go to a specialty store to upgrade the map.

Extended data:

Vehicle navigation system is mainly composed of navigation host and navigation display terminal. The built-in GPS antenna will receive data information from at least three of the 24 GPS satellites orbiting the earth, so as to determine the current position of the car. By matching the position coordinates determined by the navigation host through GPS satellite signals with the electronic map data, the accurate position of the car in the electronic map can be determined.

On this basis, it will realize many functions, such as driving navigation, route recommendation, information inquiry, playing AV/TV and so on. The driver only needs to look at the picture on the display screen, listen to the voice prompts and manipulate the remote controller in his hand to realize the above functions and drive easily.