sd card is is secure digital card which very popular now a days.This card enable the computers to read and write data for sd media inserted in the slot.This sd card is one type of non volatile memory card which is widely used in mobile phones,media players,digital camcorders,digital cameras,computers,laptops,video games and much more.This is slim compact designed sd card which is very easy to handle.we can remove the important factor of “bridge media” from different products with the help of it.If we use some decoder software then sd card device is very helpful to play music,video clips and much more things without a drive mechanism.This sd card is very useful in equipment also.With the help of sd card that equipment can be more compact and reliable.

Basically sd card is come in asymmetrical shape.There is also FAT file system in sd card.There are technically three transfer modes available in sd card.First is One-bit SD mode which has separate command and data channels.It has great proprietary transfer format.Second one is Four-bit SD mode which uses extra pins as well as some reassigned pins and the last one which is optional is SPI mode which is simple subset of SD protocol.At conclusion I would say SD card is not only a flash memory card but it also include miniSD,microSD,SDHC.There are also some extra features available in sd card which make this card more attractive and user friendly in use.Buyers should be aware of all the features of SD card before purchasing it.