RAM and ROM
This is the link to my video.
https://app.biteable.com/videos/preview/1062960/1d5a34631f8fb2a71dd7c2a1ed4b6dbe225542f5
Friday, 23 September 2016
Thursday, 22 September 2016
The future of storage
The future of storage
Optical storage
DNA storage
DNA storage is the process of encoding and decoding binary data onto and from synthesized strands of DNA (deoxyribonucleic acid). In nature, DNA molecules contain genetic blueprints for living cells and organisms.
DNA digital data storage refers to any scheme to store digital data in the base sequence of DNA.
An advantage of DNA storage, should it ever become practical for everyday use, would be its ability to store massive quantities of data in media having small physical volume
Another advantage of DNA storage is that it is very durable.
This type of storage system is more compact than current magnetic tape or hard drive storage systems due to the data density of the DNA.
Disadvantages of DNA storage for practical use today are its slow encoding speed and high cost.
The problem with DNA storage is that it is a long way behind lots of other storage devices because of it slow speed and high cost of it, but it is slowly catching up with the other data storage devices.
http://blog.world-mysteries.com/wp-content/uploads/2012/12/internetonpendrive.jpg
Flash Memory
Flash memory is a type of non volatile memory which means that no data is lost when the power is off or when a computer is turned off so it is ideal for devices such as cameras. Some of the advantages of using flash memory is that it wont break when it is dropped or exposed to heat as it is a solid state device.
Flash memory storage devices are typically small, lightweight, removable and rewritable.
Flash memory storage devices are typically small, lightweight, removable and rewritable.
It is very reliable as there are no moving parts which means the data can be held their for decades.
It is very compact and lots of data can be stored on it in a small space.
It is very fast as there are no moving parts needed to get to the data and it is much quicker than a hard disk or DVD. The cost and the reliability of flash memory has improved enough to make it practical to use as part of a hard disk.
The problems with flash memory are that data can only be stored in chunks, typically 512 to 2048 Bytes at a time. This means it is fine as a secondary storage method, just like floppy disks, hard disks and DVD's but it is no good as main memory like RAM and ROM which need byte-level access.
Also it does wear out over time. You can write to it roughly a million times before it begins to fail, in practice this is plenty for most applications.
Another problem with flash memory is it can be easily lost.
The problems with flash memory are that data can only be stored in chunks, typically 512 to 2048 Bytes at a time. This means it is fine as a secondary storage method, just like floppy disks, hard disks and DVD's but it is no good as main memory like RAM and ROM which need byte-level access.
Also it does wear out over time. You can write to it roughly a million times before it begins to fail, in practice this is plenty for most applications.
Another problem with flash memory is it can be easily lost.
https://www.dreamstime.com/stock-images-computer-flash-memory-image5432324
Optical storage
Optical storage is the storage of data on an optically readable medium.
Optical storage devices save data as patterns of dots that can be read using light and a laser beam is usually the source of light. Optical storage can range from a single drive reading a single CD-ROM to multiple drives reading multiple discs such as an optical jukebox. Optical storage on the system provides an economical and efficient way to store and retrieve large amounts of information at a high performance level. Optical storage is any storage method that uses a laser to store and retrieve data from media. Examples of this media are compact disk read-only memory (CD-ROM), digital versatile disk read-only memory (DVD-ROM), digital versatile disk random access memory (DVD-RAM), write-once read-many (worm) cartridges, and erasable optical cartridges.
Data stored on an optical disc is typically a critical backup or archive data that needs to be kept for a very long time. Optical storage has massive benefits over current storage technologies.
http://www.slideshare.net/FarkhandaKiran/optical-memory
Optical storage devices save data as patterns of dots that can be read using light and a laser beam is usually the source of light. Optical storage can range from a single drive reading a single CD-ROM to multiple drives reading multiple discs such as an optical jukebox. Optical storage on the system provides an economical and efficient way to store and retrieve large amounts of information at a high performance level. Optical storage is any storage method that uses a laser to store and retrieve data from media. Examples of this media are compact disk read-only memory (CD-ROM), digital versatile disk read-only memory (DVD-ROM), digital versatile disk random access memory (DVD-RAM), write-once read-many (worm) cartridges, and erasable optical cartridges.
Data stored on an optical disc is typically a critical backup or archive data that needs to be kept for a very long time. Optical storage has massive benefits over current storage technologies.
http://www.slideshare.net/FarkhandaKiran/optical-memory
DNA storage
DNA storage is the process of encoding and decoding binary data onto and from synthesized strands of DNA (deoxyribonucleic acid). In nature, DNA molecules contain genetic blueprints for living cells and organisms.
DNA digital data storage refers to any scheme to store digital data in the base sequence of DNA.
An advantage of DNA storage, should it ever become practical for everyday use, would be its ability to store massive quantities of data in media having small physical volume
Another advantage of DNA storage is that it is very durable.
This type of storage system is more compact than current magnetic tape or hard drive storage systems due to the data density of the DNA.
Disadvantages of DNA storage for practical use today are its slow encoding speed and high cost.
The problem with DNA storage is that it is a long way behind lots of other storage devices because of it slow speed and high cost of it, but it is slowly catching up with the other data storage devices.
http://blog.world-mysteries.com/wp-content/uploads/2012/12/internetonpendrive.jpg
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