Micro SD Card - 32GB Micro SD & 16GB Micro SD Cards
Before proceeding to micro SD card, try looking first on its origin, the Secure Digital card or famously known as SD card. SD card was introduced by SD Card Association or SDA mainly used in portable devices. It is a non-volatile memory card format composed of different families of cards including Standard Capacity (SDSC), High-Capacity (SDHC), eXtended-Capacity (SDXC), and the input/output (SDIO). It is composed of three different sizes of card which include its original size, then comes the mini version of it, then last is the micro size known as the micro SD card.
Micro SD memory card is currently the smallest memory card format available. Its size is about 15mm x 11mm x 1.0mm. Although micro SD card format is available, there are some exceptions in their family which are not being built in smaller sizes like the SDIO and SDXC family. SDIO family are not being built in micro size while SDXC family are not available in mini size. While most of the cards are being built with 32 gigabyte capacity, which was defined in the SD specification Version 2.0 ensuring compatibility, the SDXC format supports up to 2 terabyte capacity. The higher capacity SD or SDHC though was built in 2006 as the newer version of SD cards to allow higher capacities. And thus, the creation of micro SD card also allows the creation of micro SDHC card.
All micro SD cards are rated according to their class including mini and original size. It is mandatory for all SD cards to be rated according to their class for consumers to know and identify the compatibility of their device or their device requirements.
But the main reason is that, classification enables the user to know the operating speed of the SD or SDHC card. The classes are being identified as class 2, class 4, and class 6, though there are reports that manufacturers have built higher class other than 6. A Class 2 micro SD memory card means that it has the speed performance of 2 MB at its best fragmented state while the memory is still empty. It means that while the memory is being occupied, the speed reduces its writing capability. The same applies for classes 4 and 6 with 4MB and 6MB writing speed performance accordingly.
Micro SD card are most commonly used in portable devices such as cellular phones, digital cameras, and laptops. Because of its removable capability it became easier for users to share information with anyone else. Along with the increasing development in the world of technological devices, micro SD card reader are also built as an addition to the enhancement and easy file transfer.
Micro SD cards are built almost compatible to any slots that are built in mobile devices. It is fairly famous in smartphones which can take handle different micro card capacity. Micro SD card is now largely being developed by various manufacturers with the compatibility mode to any portable devices for easier data or file transfer which are most commonly used in third and fourth generation gadgets.