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The evolution of portable storage devices

Removable storage media has been in existence almost as long as the computer itself. Many of you may be able to remember back to when the tape was used for storage, as well as what was used by audio tapes. Going back remember even back to the days when even the paper punch cards used to store data. We have come a long way since then and now devices storage are able to hold gigabytes of data in a very small device.

There are lots of reasons why removable devices storage are very useful. They can be used to store software, backup of vital information, an easy way of transporting data between machines, providing information to someone else and of course a backup of important information. Storage devices that can be bought these days offer an incredible variety of options from STLE old floppies that can store up 1.44 MB of data to hard drives that can hold hundreds of gigabytes information.

portable storage media is divided into three categories: magnetic storage, optical storage and state Solid storage. The most memorable tgat magnetic storage media used in the 1.44 MB floppies. The magnetic device is covered with an oxide ferromagnetic iron. Electromagnets in the disk drive read and write data using electromagnets.

magnetic storage technology has improved greatly over the years. A long leap forward was made with the introduction of Zip drives and much higher capacity alternative to the floppy. The layer on a disk zip is of much higher quality. This means that the head in a Zip drive used to read and write data to the disk may be much smaller than found in a disk drive. In fact, the many improvements made in a zip disk means you can store hundreds of megabytes of data on a disk.

removable solid-state devices such as those used in Digital Cameras and PDAs makes use of flash memory that contains no moving parts whatsoever. Flash memory stores data using transistor networks where information is held in the form of one and zeros. Flash memory used in building and wiring the circuit much faster than traditional electrically erasable memory.

Flash memory devices such as SmartMedia or CompactFlash cards are the most common form of media storage used today. CompactFlash is a small circuit board flash memory chips and a dedicated controller chip is all in a sturdy box. The increase in the thickness of the card, of course, allows for greater storage capacity.

It seems that the removable storage has the potential to evolve in many different directions. Magnetic media should be maintained in cartridge form and two hard drives that are in the range in terms of gigabytes of storage. There may also be a trend towards the use of optical storage devices whose units are the size of a matchbook and make use of small disks, which can store about 500 MB of information. Solid state devices such as CompactFlash cards will continue to increase over time the remaining capacity of the same size where, as USB flash drives can be smaller and smaller.

About the Author

Dave Matthews is writing on behalf of Universal Smart Cards, a leading retailer of smart card readers.

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