Blu ray technology.

As said necessity is the mother of invention, the need for huge storage as unveiled a new product which was developed by a group of organizations. A 30 GB single layer disc called Blu-ray. It incorporates an s\w 405 nm blue violet laser to record, rewrite and playback the data. A cartridge protects the disc’s surface from dust and fingerprints. Also using this technology Toshiba has unveiled a next generation storage disc with 110 GB capacity. It is basically twin sided double layer construction for more data packaging. Plans are there to create large storage discs by making use of multiple layers and both sides of the discs. Also Nano-technology could come to the rescue. Either way there is a need to create devices that could effectively use these disks.

When the CD Drive is ill.

Sometimes the CD drive (which was used at a level where it would cry to leave a vacation if it had eyes) will have problems in the movement of the tray in and out of the drive. Either the insertion of the tray won’t work properly or the tray won’t accept the command to come out. For the former issue of disobedience shown by the Drive, we usually use our hands to guide to the tray inside by just pushing (carelessly). But for the latter case all thing that is to be done is to use a pin or something thin and sharp like needle that can be inserted in the front panel of the Drive (usually below the CD tray). On inserting this, the CD tray will eject the CD-ROM just like that.

Plastic memory

While magnetic revolution on storage devices was still on stage, research was switched on to find the alternatives. One such alternative is found to be plastic. The memory was built using silicon and plastic foil. Data storage will be done by applying current to a polymer fuse, thereby blowing and changing its conductivity state. Data retrieval will be done using lower voltage levels, to determine blown fuses, representing zeros and ones. In this technique data is permanently stored. Also many such inventions in search for faster and huge alternatives were being performed by the digital tycoons like AMD.

Floppy,CD,DVD then

First it was the 1.44 MB Floppy disk, and then came the CD (compact drive) with around 700MB of storage capacity and then the DVD (Digital video disc) with 4.5 GB. While Blu ray is in the list, Enhanced Versatile Disk (EVD) was released. It is considered to be the next digital disc technology, estimated to offer five times higher definition than DVD players. It doesn’t seem to have any change in storage capacity rather the mechanism of storage and retrieval should differ.

Shifting the delete.

Each of us with either a desktop or a laptop always assume that our system is safe and there is no possibility of any kind of intrusion either physically or through network hacking. Factually speaking the rate at which this assumption becomes true depends on the level of knowledge one possess with respect to the system configuration and security mechanisms provided or applied in the system.
To be precise consider a simple operation being performed often or even every time using a system. We use the Shift + Del to delete a file permanently. Things happening behind this operation is, Windows removes only the file name from the File Allocation Table. The real data remains on the hard disk till some other data is written on it. Thus with proper tools and knowledge one could easily have that data back. So, in order to delete a file completely out of your hard disk use either a file shredder or some eraser tool.