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TF card is a very small flash memory card, which is mainly used in mobile phones. However, due to its small size and increasing storage capacity, it has been used in GPS devices, portable music player and some storage disks. Its volume is 15mm x 11mm x 1mm, which is almost equal to the size of the finger and is now a tiny flash memory card. It can also be connected to the card slot through tf adapter.

 * If 3.0 card reader +3.0 interface is used, the test data will be better. The actual speed depends on the device used and the document size.

  Special reminder

  the actual capacity of the memory card 2GB is about 1.85GB, because the computer uses binary manufacturers to produce 10-bit

Class level

Class level is also an important symbol of TF card. It is a quantitative symbol of transmission speed. Memory cards of different levels can meet the needs of different users. Taking tf as an example, it is divided into Class 2,Class 4,Class 6, and Class 10 levels, and now there are more fierce UHS-I-level cards. There is a certain relationship between the Class level and tf. For example, the tf memory card must have a capacity of more than 2GB and a transmission speed of at least Class 2.

class 2: Low writing reaches 2.0MB/s, which can meet the requirements of watching ordinary MPEG4 MPEG2 movies, SDTV and digital video cameras.
class 4: Low writing reaches 4.0MB/s, which can smoothly play high definition TV (HDTV), digital camera continuous shooting and other requirements.
class 6: Low writing reaches 6.0MB/s, which meets the use requirements of SLR camera continuous shooting and professional equipment.
class 10: low write up to 10.0mb/s, full HD TV recording and playback.