A memory card reader is a computer hardware device that reads and writes data to and from a media source, such as the memory card that holds pictures from a digital camera, according to Computer Hope. A six-in-one reader reads and writes six different types of media formats.Know More
Computer Hope explains that a memory card reader transfers all types of data to and from a computer, including music, e-books, movies, computer games and pictures. A six-in-one media card reader provides the flexibility of reading six different sizes and types of media, or memory cards, using only one device. Typical media card formats, as of June 2014, include Compact Flash, Secure Digital, MultiMedia Card and microSD.
There are two different types of memory card readers. The first type is portable and plugs in to the USB port on a laptop or other device on one side with the other side available for the media cards. The second type is built in to a laptop or desktop computer. A built-in memory card reader typically has more than one opening to accommodate the different types of media cards.Learn More
The number of pictures that a 4GB memory card holds is directly related to the size of the pictures, but it generally has the capacity to store 1,140 photos that are 10 megapixels. This figure is based on the fact that 1 megapixel equals about 1,000,000 pixels, that 1MB is equal to about 1,000,000 bytes and 1GB equals about 1,000MB.Full Answer >
A one-gigabyte memory card holds between 13 and 715 pictures at one time, depending up on how many megapixels each photograph contains. A card can hold more compressed files than raw photographs that haven't been compressed for easier storage. For example, a one-gigabyte memory card holds 715 compressed picture files if each photograph has four megapixels. The same capacity card holds 13 raw photos at 22 megapixels each.Full Answer >
The term "magnetic media" is used to refer to any storage medium that uses magnetic patterns to record information. Good examples of magnetic media include computer and video tapes, hard drives and floppy discs.Full Answer >
As of 2014, most computer storage media comes in three forms: magnetic, optical and flash. Magnetic media includes internal and external hard drives, although there are still a few formats that use magnetic tape or removable disks. Optical media includes CD, DVD and Blu-ray discs. Flash memory storage involves USB drives, SD and other flash memory cards, and solid-state hard drives.Full Answer >