For now, there are three kinds of compact storage devices, TF card, SD card, U disk, not to mention mobile hard disk here, although he is very small, but still a little bigger, can be put in the pocket or in front of the three said .
TF cards and SD cards cannot be used directly on a PC as USB flash drives. They are more like the basic components of a storage device. In essence, the TF card is a miniaturization of the SD card. They are a different manifestation of a thing. The standard SD card is relatively large, and it has also been miniaturized in the later period. It is called miniSD, but the popular time is not long. It is replaced by the current TF card. The name of the TF card is T-Flash, which is later changed to TransFlash. The difference from the miniSD card is that it is usually called "Micro SD".
Baidu explained in this way: Micro SD Card, formerly known as Trans-flash Card, was officially renamed Micro SD Card at the end of 2004 and was invented by SanDisk Corporation. Prior to the launch of Micro SD, mobile phone manufacturers used embedded memory. Although this type of module was easy to install, it was not able to respond to actual demand trends – capacity was limited. No more room for upgrades. The Micro SD emulates the application mode of the SIM card, that is, the same card can be used in different types of mobile phones, so that the mobile phone manufacturers do not have to worry about the card-based R&D and design. Micro SD is enough to be a removable storage IC.
SD card is what? Let me take a look: Secure Digital Memory Card (SD) is a memory card based on semiconductor flash memory technology. It was completed in 1999 by Matsushita's dominant concept, participants Toshiba and SanDisk of the United States. In 2000, these companies launched the SD Association (SDA), which has a strong lineup and attracts a large number of manufacturers. Including IBM, Microsoft, Motorola, NEC, Samsung and so on. Driven by these leading vendors, SD cards have become the most widely used memory card in consumer digital devices. SD card has a large capacity, high performance, security and other features of multi-function memory card, it has a more than one MMC card for data copyright protection password authentication function (SDMI specifications), read and write speed is 4 times faster than the MMC card , up to 2M/s.
The essence of the U disk is to add a control chip and a standard USB interface on a flash integrated board. The earliest U disk capacity is mega-level, such as 8M, 16M, etc. Currently, it is calculated by GMb, and now an ordinary U disk is also 8G.
TF card can be changed to SD card, that is, only one card sleeve is added.
TF card, SD card, can be simulated into U disk through reading card, the reader is a stuff with control chip. TF cards and SD are just removable memory for readers.
Their reverse simulation is not acceptable, U disk will not be simulated into TF card and SD card, SD card can not be simulated into a TF card, the current look at the TF card is the most basic unit device, in a wide range of devices such as mobile phones, tablets, etc. Adopted, TF card can become SD card, can become U disk, therefore, as long as there is a TF card, he is omnipotent, we just have a card holder, an SD card reader, we have everything. The following figure is my device:
TF cards and SD cards cannot be used directly on a PC as USB flash drives. They are more like the basic components of a storage device. In essence, the TF card is a miniaturization of the SD card. They are a different manifestation of a thing. The standard SD card is relatively large, and it has also been miniaturized in the later period. It is called miniSD, but the popular time is not long. It is replaced by the current TF card. The name of the TF card is T-Flash, which is later changed to TransFlash. The difference from the miniSD card is that it is usually called "Micro SD".
The essence of the U disk is to add a control chip and a standard USB interface on a flash integrated board. The earliest U disk capacity is mega-level, such as 8M, 16M, etc. Currently, it is calculated by GMb, and now an ordinary U disk is also 8G.
TF card can be changed to SD card, that is, only one card sleeve is added.
Laminated wood mat is an indispensable insulation material in the power industry and transformer manufacturing.
Custom manufacturer offering precision fabricated and cut-to-size plastic and wood parts.
Wood Pressure Ring,Laminated Wood Nuts,Nuts And Threaded Rods,Laminated Wood Threaded Rods
Yingkou Dongyuan Electrical Insulation Board Co.,Ltd , https://www.dy-insulation.com