The memory card is a digital data storage devices, such as digital images, digital files, digital sound and digital video. Memory cards usually have the capacity based on the size of a standard digital bits are 16MB, 32MB, 64MB, 128MB, 256MB and so on multiples of two. There are several types of memory cards which until now there are about 43 species. The number of the largest capacity currently is the type of CF (Compact Flash) with 8 GB (info: 1 GB = 1024MB, 1048576KB). To read the digital data stored in the memory card into the computer, the device needs a memory card reader (memory card reader).