Research

In computer storage, removable media refers to storage media which is designed to be removed from the computer without powering the computer off.

Definition Defining electronic data storage, as the elaborations in this section will indicate, is no trivial task. A brief introduction would define it as any device which requires electrical power to record information. Computer data storage, distinct from electronic data storage, requires a computer system to read and manipulate the encoded data. Storage makes up one of the core components of a computer system along with the central processing unit, as defined in the von Neumann model which has been in use since the 1940s. Without storage ability, a computer becomes a signal processing device (e.g., a CD player). Encoded data may be stored as persistent or volatile memory (e.g., hard disk versus RAM), it may be mutable or read-only (e.g., hard disk versus WORM CD/DVD ; "write once, read many”). It may have the ability to access storage sequentially or variably (e.g., tape storage versus random access memory).

Magnetic storage and magnetic recording are terms from engineering referring to the storage of data on a magnetized medium. Magnetic storage uses different patterns of magnetization in a magnetizable material to store data and is a form of non-volatile memory. The information is accessed using one or more read/write heads. As of 2009, magnetic storage media, primarily hard disks, are widely used to store computer data as well as audio and video signals. In the field of computing, the term magnetic storage is preferred and in the field of audio and video production, the term magnetic recording is more commonly used. The distinction is less technical and more a matter of preference. Other examples of magnetic storage media include floppy disks, magnetic recording tape, and magnetic stripes on credit cards.

Your next build may very well come configured with dual-SSD drives in a RAID 0 array for the OS, a gluttonous 2TB SATA HDD for storage duties, and a Blu-ray optical drive for movie watching and HD backups. And for quick transfers from one rig to another, does it get any sweeter than a 64GB USB thumb drive loaded with all of your favorite apps? Such a storage scheme is certainly worthy of dream machine status, but our storage options weren't always as fanciful, fast, and fat as they are today. Some of you may remember toting a 3.5-inch floppy to and from school, while others hearken all the way back to cassette tapes. And if you've lived long enough to remember the IBM Punch Card first hand, just ask and we'll SPEAK LOUDER. Fasten your seatbelt and take a trip back in time with us as we follow the evolution of computer storage from its earliest days, all the way up to now.

A data storage device is a device for recording (storing) information (data). Recording can be done using virtually any form of energy, spanning from manual muscle power in handwriting, to acoustic vibrations in phonographic recording, to electromagnetic energy modulating magnetic tape and optical discs.

A hard disk uses rigid rotating platters. It stores and retrieves digital data from a planar magnetic surface. Information is written to the disk by transmitting an electromagnetic flux through an antenna or write head that is very close to a magnetic material, which in turn changes its polarization due to the flux. The information can be read back in a reverse manner, as the magnetic fields cause electrical change in the coil or read head that passes over it.

Did you know that it would take around 6 000 floppy disks to store one DVD – or 4 500 compact cassettes, with a playback time of 280 days? Here’s a brief look into the history of data storage.

Google Videos (originally Google Video) is a video search engine, and formerly a free video sharing website, from Google Inc. Before removing user-uploaded content, the service allowed selected videos to be remotely embedded on other websites and provided the necessary HTML code alongside the media, similar to YouTube. This allowed for websites to host large amounts of video remotely without running into bandwidth or storage capacity issues.

A computer virus hoax is a message warning the recipient of a non-existent computer virus threat. The message is usually a chain e-mail that tells the recipient to forward it to everyone they know.

A virus reproduces, usually without your permission or knowledge. In general terms they have an infection phase where they reproduce widely and an attack phase where they do whatever damage they are programmed to do (if any). There are a large number of virus types.