How to select a memory card

How to select a memory card

The SD card (secure Digital Memory card) is a new generation memory device based on the semiconductor flash memory, which is widely used in portable devices, such as digital camera, personal digital assistant (PDA) and multimedia player. SD Card by Japan Panasonic, Toshiba and the United States SanDisk Company in August 1999 jointly developed. The size is like a stamp SD memory card, weighs only 2 grams, but has the high memory capacity, the fast data transmission rate, the great mobility flexibility as well as the good security.

microSD card also known as TF card, but also from the SD card based on the improvement of a new memory card. Its size is only One-fourth of the SD card, is currently the smallest memory card. The maximum capacity of the microSD card is limited due to its small size. Some memory card capacity has reached 8GB, while the largest microSD card in the market is only 2GB. In addition, microSD card built-in copyright protection management system, can effectively curb malicious shared resources.

Class level: Class level is also an important symbol of SDHC card, it is a quantitative symbol of transmission speed, different levels of memory card can meet the needs of different users. Take the latest SDHC as an example to divide the class 2,class 4,class 6,class 10, and now there are even more fierce us-i

Grade card. Class level and SDHC is a certain relationship, such as SDHC memory card capacity must be above 2GB, and at least have class 2 level of transmission speed

The higher the class level the faster the transmission is, this is true, but it does not mean that the class-level memory card can be used arbitrarily on the phone. Because the more class 10 memory card products less than the number and they are used in professional SLR devices, it is not suitable for use on the phone. Even if you run on the phone, its speed also does not have any obvious advantages, generally speaking Class 4 card is enough, so that we do not have to superstitious class rating of high values, according to their choice to choose the appropriate level.

The bigger the memory card, the better, it's also a relatively erroneous claim that the 32GB high-capacity memory card does allow you to store more data, but do you need a portable hard drive or a timely read communication tool? If you don't have much to store, it's not necessary to buy large memory cards, Why do you say that? Because the larger the capacity of the card not only affects the speed of reading, but also drag the phone processor, speed up the battery energy consumption, these are virtually loss. So while the High-capacity memory card allows you to get large space capacity, but if you use less than so much space, can only be let mobile phone again and again wasted reading and writing function

Try to choose the memory card of the famous brand