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Removable media - Essay Example

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Flash memory cards refer to temporary storage media categorized into two broad categories depending on the requirement of electrical charge to maintain its state. The first type of flash memory cards, require electrical charge to maintain its state and are commonly used in Personal Digital Assistants and some cellphones. …
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Computer Science and Information Technology Removable Flash Memory Cards Flash memory cards refer to temporary storage media categorized into two broad categories depending on the requirement of electrical charge to maintain its state. The first type of flash memory cards, require electrical charge to maintain its state and are commonly used in Personal Digital Assistants and some cellphones. The second type is can maintain its state without electrical charge. Hence, the data stored in the later form of flash memory cards is referred to as non-volatile. Flash media confer the most suitable media for storage of data owing to their small size and increasing capacity for storage. The decrease in physical size and increase in storage capacity is as a result of direct adherence to Moore’s Law (Brown 201).
The widespread and usage of flash drive memory cards can be attributed the availability of flash disk adaptors for computers which facilitate fast transfer of data on these devices. The capacity of some of the available storage cards in the market ranges between 2GB to 32GB depending on the media type. However, Moore’s Law dictates the doubling of capacity over a period of one and a half years (Brown 202). However, recent technological advancements fall outside Moore’s Law, manufacturing storage cards with higher storage capacity. Current technological advancements classify flash memory cards depending on the basis of their price, speed, reliability and warranty (Chen para.2). Some of the recent developments in the storage capacity and type of flash memory cards are indicated below.
Media type
Current Maximum capacity
Upcoming new capacities
Secure Digital (SD)
64 GB (San Disk)
2 TB by 2015
Secure Digital High Capacity (SDHC)
16 GB (Best Buy)
No future improvements announced
MiniSD
64 GB (Best Buy)
No future improvements announced
MiniSDHC
64 GB (Future Shop)
No future improvements announced
MicroSD
64 GB (Future Shop)
No future improvements announced
MicroSDHC
32 GB (San Disk)
No future improvements announced
SD Extended Capacity(SDXC)
128GB (San Disk)
256 GB by October 2014 (Lexar)
CompactFlash(CF)
256 GB (San Disk)
No future improvements announced
SmartMedia(SM)
128 MB (Newegg.com)
Obsolete (No longer manufactured)
Sony Memory Stick(MS)
16 GB (Sony)
32 GB by 2015
MultiMediaCard(MMC)
2 GB (Newegg.com)
Obsolete (No longer manufactured)
xD-Picture Card(xD)
32 GB (Amazon)
No future improvements announced
Fig 1. Table showing specifications of Removable flash memory cards
Works cited
Amazon. “xD card review”. Retrieved on October 22, 2014. Web.
Brown, T., L., Christopher. Computer Evidence: collection and preservation. Cengage Learning,
2nd edition, 2010.
Best Buy. “Products: memory cards”. Retrieved on October 22, 2014. Web.
Future Shop. “Flash card prices and review”. Retrieved on October 22, 2014.Web.
Newegg. “SDXC flash card Models”. Retrieved on October 22, 2014.Web.
Lexar. “Lexar Announces Industry’s First 256GB SDXC UHS-I Memory Card” Retrieved on
October 22, 2014. Web.
Sony. “Memory card Media compatibility”. Retrieved on October 22, 2014. Web.
San Disk. “Sandisk introduces world’s highest capacity MicroSDXC memory card at 128GB.
Retrieved on October 22, 2014. Web. Read More
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