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Technologies, devices and media of the computer memory |
Technologies, devices and media of the computer memory
Regarding the need for data storage the computer memory is important. Therefore there exist different technologies, different devices and different media to store data. One of these ways is the magnetic storage. This technology uses different patterns of magnetization on a magnetically coated surface in order to store the information. This magnetic storage is non-volatile. Furthermore it is possible that the information is accessed to use one or more read/write heads. Due to the fact that the read/write head only covers a part of the surface this magnetic storage can only be a sequential access. In times with modern computers, as today, this magnetic surface can have different forms, i.e. magnetic disks such as floppy disks or hard disks, and the magnetic tape data storage (that is used for tertiary and off-line storage).
Another technology to store data is the semiconductor storage. This technology uses semiconductor-based integrated circuits in order to store information. There is a semiconductor memory chip that may contain millions of tiny transistors or capacitors. Regarding this technology there exist both forms of semiconductor memory: the volatile and the non-volatile form.
A further technology is the optical disc storage. This technology to store data uses tiny pits etched on the surface of a circular disc in order to store the information. It also reads this information by illuminating the surface with a laser diode and by observing the reflection. This type of storage is non-volatile and it offers sequential access. There exist some common forms of this storage technology, i.e. CD, CD-ROM, DVD, CD-R, DVD-R, DVD+R, CD-RW, DVD-RW, DVD+RW, DVD-RAM, Blue-ray, HD DVD, Ultra Density Optical and Professional Disc for DATA.
Further information: http://www.aria.co.uk/Products/Components/Memory/ | | Author Info: The author of this article is SearchMedia, a small company situated in Germany with its main purpose in online marketing. |
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