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214 relations: Abstraction (computer science), Address bus, Amsterdam, Aperture (computer memory), Areal density (computer storage), Arithmetic logic unit, ASCII, Autochanger, Auxiliary memory, Backup, Bandwidth (computing), Barcode, Binary number, BIOS, Bit, Bit rate, Bitwise operation, Blu-ray, Blu-ray Disc recordable, Bootstrapping, Bubble memory, Bus (computing), Byte, Calculator, Capacitor, Carousel memory, CAS latency, Cathode ray tube, CD-R, CD-ROM, CD-RW, Central processing unit, Character (computing), Character encoding, Cloud storage, Code, Compact disc, Complete Works of Shakespeare, Computer, Computer data storage, Computer file, Computer hardware, Computer network, Computer programming, Content-addressable memory, Control unit, Core rope memory, CPU cache, Crystal, Cyclic redundancy check, ..., Data, Data (computing), Data buffer, Data compression, Data deduplication, Data proliferation, Data security, Data storage, Data storage tag, Data transmission, Database, Delay line memory, Desktop computer, Digital signal processing, Direct-attached storage, Directory (computing), Disaster recovery, Disk mirroring, Disk storage, DNA digital data storage, Drum memory, DVD, DVD recordable, DVD-RAM, Dynamic random-access memory, Electrical resistance and conductance, Embedded system, EMC Symmetrix, Encryption, Error detection and correction, Failure rate, Federal Standard 1037C, Ferromagnetism, Fibre Channel, File hosting service, File system, Flash memory, Floppy disk, Hard disk drive, Hdparm, Hierarchical storage management, History of computing hardware, Holographic data storage, Holographic Versatile Disc, Human-readable medium, Industrial robot, Information repository, Information security, Input/output, Instruction set architecture, Integrated circuit, Internet, Jeffrey Vitter, JPEG, Laptop, Laser diode, Latency (engineering), List of file formats, Local area network, Longitudinal wave, Magnetic storage, Magnetic tape data storage, Magnetic-core memory, Magnetism, Magnetization, Magneto-optical drive, Mass storage, Megabyte, Memory address, Memory cell, Memory cell (computing), Memory hierarchy, Memory leak, Memory management, Memory management unit, Memory protection, Memory refresh, Mercury (element), Metadata, Millisecond, Molecular memory, Morgan Kaufmann Publishers, MPEG-4, Multimedia, Nanosecond, NCR CRAM, Nearline storage, Network File System, Network-attached storage, Noise-predictive maximum-likelihood detection, Non-RAID drive architectures, Non-volatile memory, Nucleotide, Numerical digit, Object storage, Online and offline, Operating system, Optical disc, Optical disc drive, Optical jukebox, Optical storage, Optical tape, Page (computer memory), Page address register, Paging, Paper data storage, Petabyte, Phase-change material, Phase-change memory, Photopolymer, Polymer, Proceedings of the IEEE, Processor register, Punched card, Punched tape, Radiation, RAID, RAM drive, RAM parity, Random access, Random-access memory, Randomness, Read-only memory, Removable media, Retronym, Sar (Unix), Second, Selectron tube, Semiconductor, Semiconductor memory, Sequential access, Server Message Block, Software, Solid-state drive, Stable storage, State (computer science), Static random-access memory, Storage area network, Storage Networking World, Storage World Conference, Tape library, Terabyte, Thin-film memory, Throughput, Transistor, Twistor memory, Ultra Density Optical, Uninterruptible power supply, Unit of measurement, USB flash drive, Vacuum tube, Virtual memory, Virtual tape library, Volatile memory, Von Neumann architecture, Wait state, Wide area network, Williams tube, Word (computer architecture), Write buffer, Write once read many, Write protection, Zip drive, 3D optical data storage. Expand index (164 more) »
Abstraction (computer science)
In software engineering and computer science, abstraction is.
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Address bus
An address bus is a computer bus (a series of lines connecting two or more devices) that is used to specify a physical address.
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Amsterdam
Amsterdam is the capital and most populous municipality of the Netherlands.
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Aperture (computer memory)
In computing, an aperture is a portion of physical address space (i.e. physical memory) that is associated with a particular peripheral device or a memory unit.
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Areal density (computer storage)
Areal density is a measure of the quantity of information bits that can be stored on a given length of track, area of surface, or in a given volume of a computer storage medium.
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Arithmetic logic unit
An arithmetic logic unit (ALU) is a combinational digital electronic circuit that performs arithmetic and bitwise operations on integer binary numbers.
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ASCII
ASCII, abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication.
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Autochanger
No description.
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Auxiliary memory
Auxiliary memory, also known as auxiliary storage, secondary storage, secondary memory or external memory, is a non-volatile memory (does not lose stored data when the device is powered down) that is not directly accessible by the CPU, because it is not accessed via the input/output channels (it is an external device).
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Backup
In information technology, a backup, or the process of backing up, refers to the copying into an archive file of computer data so it may be used to restore the original after a data loss event.
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Bandwidth (computing)
In computing, bandwidth is the maximum rate of data transfer across a given path.
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Barcode
A barcode (also bar code) is an optical, machine-readable, representation of data; the data usually describes something about the object that carries the barcode.
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Binary number
In mathematics and digital electronics, a binary number is a number expressed in the base-2 numeral system or binary numeral system, which uses only two symbols: typically 0 (zero) and 1 (one).
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BIOS
BIOS (an acronym for Basic Input/Output System and also known as the System BIOS, ROM BIOS or PC BIOS) is non-volatile firmware used to perform hardware initialization during the booting process (power-on startup), and to provide runtime services for operating systems and programs.
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Bit
The bit (a portmanteau of binary digit) is a basic unit of information used in computing and digital communications.
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Bit rate
In telecommunications and computing, bit rate (bitrate or as a variable R) is the number of bits that are conveyed or processed per unit of time.
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Bitwise operation
In digital computer programming, a bitwise operation operates on one or more bit patterns or binary numerals at the level of their individual bits.
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Blu-ray
Blu-ray or Blu-ray Disc (BD) is a digital optical disc data storage format.
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Blu-ray Disc recordable
Blu-ray Disc Recordable (or BD-R) refers to two direct to disc optical disc recording technologies that can be recorded on to an optical disc with an optical disc recorder.
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Bootstrapping
In general, bootstrapping usually refers to a self-starting process that is supposed to proceed without external input.
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Bubble memory
Bubble memory is a type of non-volatile computer memory that uses a thin film of a magnetic material to hold small magnetized areas, known as bubbles or domains, each storing one bit of data.
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Bus (computing)
In computer architecture, a bus (a contraction of the Latin omnibus) is a communication system that transfers data between components inside a computer, or between computers.
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Byte
The byte is a unit of digital information that most commonly consists of eight bits, representing a binary number.
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Calculator
An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.
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Capacitor
A capacitor is a passive two-terminal electrical component that stores potential energy in an electric field.
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Carousel memory
Carousel memory is a type of secondary storage for computers, which was created by Swedish computer engineers and Gunnar Stenudd.
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CAS latency
Column Access Strobe (CAS) latency, or CL, is the delay time between the moment a memory controller tells the memory module to access a particular memory column on a RAM module, and the moment the data from the given array location is available on the module's output pins.
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Cathode ray tube
The cathode ray tube (CRT) is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images.
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CD-R
CD-R (Compact Disc-Recordable) is a digital optical disc storage format.
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CD-ROM
A CD-ROM is a pre-pressed optical compact disc which contains data.
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CD-RW
CD-RW (Compact Disc-ReWritable) is a digital optical disc storage format.
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Central processing unit
A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions.
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Character (computing)
In computer and machine-based telecommunications terminology, a character is a unit of information that roughly corresponds to a grapheme, grapheme-like unit, or symbol, such as in an alphabet or syllabary in the written form of a natural language.
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Character encoding
Character encoding is used to represent a repertoire of characters by some kind of encoding system.
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Cloud storage
Cloud storage is a model of computer data storage in which the digital data is stored in logical pools.
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Code
In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form or representation, sometimes shortened or secret, for communication through a communication channel or storage in a storage medium.
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Compact disc
Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982.
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Complete Works of Shakespeare
Complete Works of William Shakespeare is the standard name given to any volume containing all the plays and poems of William Shakespeare.
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Computer
A computer is a device that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming.
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Computer data storage
Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media that are used to retain digital data.
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Computer file
A computer file is a computer resource for recording data discretely in a computer storage device.
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Computer hardware
Computer hardware includes the physical parts or components of a computer, such as the central processing unit, monitor, keyboard, computer data storage, graphic card, sound card and motherboard.
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Computer network
A computer network, or data network, is a digital telecommunications network which allows nodes to share resources.
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Computer programming
Computer programming is the process of building and designing an executable computer program for accomplishing a specific computing task.
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Content-addressable memory
Content-addressable memory (CAM) is a special type of computer memory used in certain very-high-speed searching applications.
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Control unit
The control unit (CU) is a component of a computer's central processing unit (CPU) that directs the operation of the processor.
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Core rope memory
Core rope memory is a form of read-only memory (ROM) for computers, first used in the 1960s by early NASA Mars space probes and then in the Apollo Guidance Computer (AGC) designed and programmed by the Massachusetts Institute of Technology (MIT) Instrumentation Lab and built by Raytheon.
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CPU cache
A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory.
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Crystal
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
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Cyclic redundancy check
A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data.
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Data
Data is a set of values of qualitative or quantitative variables.
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Data (computing)
Data (treated as singular, plural, or as a mass noun) is any sequence of one or more symbols given meaning by specific act(s) of interpretation.
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Data buffer
In computer science, a data buffer (or just buffer) is a region of a physical memory storage used to temporarily store data while it is being moved from one place to another.
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Data compression
In signal processing, data compression, source coding, or bit-rate reduction involves encoding information using fewer bits than the original representation.
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Data deduplication
In computing, data deduplication is a specialized data compression technique for eliminating duplicate copies of repeating data.
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Data proliferation
Data proliferation refers to the prodigious amount of data, structured and unstructured, that businesses and governments continue to generate at an unprecedented rate and the usability problems that result from attempting to store and manage that data.
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Data security
Data security means protecting digital data, such as those in a database, from destructive forces and from the unwanted actions of unauthorized users, such as a cyberattack or a data breach.
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Data storage
Data storage is the recording (storing) of information (data) in a storage medium.
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Data storage tag
A data storage tag (DST), also sometimes known as an archival tag, is a data logger that uses sensors to record data at predetermined intervals.
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Data transmission
Data transmission (also data communication or digital communications) is the transfer of data (a digital bitstream or a digitized analog signal) over a point-to-point or point-to-multipoint communication channel.
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Database
A database is an organized collection of data, stored and accessed electronically.
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Delay line memory
Delay line memory is a form of computer memory, now obsolete, that was used on some of the earliest digital computers.
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Desktop computer
A desktop computer is a personal computer designed for regular use at a single location on or near a desk or table due to its size and power requirements.
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Digital signal processing
Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations.
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Direct-attached storage
Direct-attached storage (DAS) is digital storage directly attached to the computer accessing it, as opposed to storage accessed over a computer network.
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Directory (computing)
In computing, a directory is a file system cataloging structure which contains references to other computer files, and possibly other directories.
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Disaster recovery
Disaster recovery (DR) involves a set of policies, tools and procedures to enable the recovery or continuation of vital technology infrastructure and systems following a natural or human-induced disaster.
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Disk mirroring
In data storage, disk mirroring is the replication of logical disk volumes onto separate physical hard disks in real time to ensure continuous availability.
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Disk storage
Disk storage (also sometimes called drive storage) is a general category of storage mechanisms where data is recorded by various electronic, magnetic, optical, or mechanical changes to a surface layer of one or more rotating disks.
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DNA digital data storage
DNA digital data storage refers to any process to store digital data in the base sequence of DNA using commercially available oligonucleotide synthesis machines for storage and DNA sequencing machines for retrieval.
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Drum memory
Drum memory was a magnetic data storage device invented by Gustav Tauschek in 1932 in Austria.
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DVD
DVD (an abbreviation of "digital video disc" or "digital versatile disc") is a digital optical disc storage format invented and developed by Philips and Sony in 1995.
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DVD recordable
DVD recordable and DVD rewritable refer to part of optical disc recording technologies.
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DVD-RAM
DVD-RAM (DVD Random Access Memory) is a disc specification presented in 1996 by the DVD Forum, which specifies rewritable DVD-RAM media and the appropriate DVD writers.
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Dynamic random-access memory
Dynamic random-access memory (DRAM) is a type of random access semiconductor memory that stores each bit of data in a separate tiny capacitor within an integrated circuit.
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Electrical resistance and conductance
The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor.
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Embedded system
An embedded system is a computer system with a dedicated function within a larger mechanical or electrical system, often with real-time computing constraints.
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EMC Symmetrix
The Symmetrix system is EMC Corporation's enterprise storage array.
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Encryption
In cryptography, encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot.
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Error detection and correction
In information theory and coding theory with applications in computer science and telecommunication, error detection and correction or error control are techniques that enable reliable delivery of digital data over unreliable communication channels.
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Failure rate
Failure rate is the frequency with which an engineered system or component fails, expressed in failures per unit of time.
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Federal Standard 1037C
Federal Standard 1037C, titled Telecommunications: Glossary of Telecommunication Terms, is a United States Federal Standard issued by the General Services Administration pursuant to the Federal Property and Administrative Services Act of 1949, as amended.
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Ferromagnetism
Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets.
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Fibre Channel
Fibre Channel, or FC, is a high-speed network technology (commonly running at 1, 2, 4, 8, 16, 32, and 128 gigabit per second rates) providing in-order, lossless delivery of raw block data, primarily used to connect computer data storage to servers.
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File hosting service
A file hosting service, cloud storage service, online file storage provider, or cyberlocker is an Internet hosting service specifically designed to host user files.
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File system
In computing, a file system or filesystem controls how data is stored and retrieved.
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Flash memory
Flash memory is an electronic (solid-state) non-volatile computer storage medium that can be electrically erased and reprogrammed.
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Floppy disk
A floppy disk, also called a floppy, diskette, or just disk, is a type of disk storage composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic enclosure lined with fabric that removes dust particles.
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Hard disk drive
A hard disk drive (HDD), hard disk, hard drive or fixed disk is an electromechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.
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Hdparm
hdparm is a command line program for Linux to set and view ATA hard disk drive hardware parameters and test performance.
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Hierarchical storage management
Hierarchical storage management (HSM) is a data storage technique that automatically moves data between high-cost and low-cost storage media.
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History of computing hardware
The history of computing hardware covers the developments from early simple devices to aid calculation to modern day computers.
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Holographic data storage
Holographic data storage is a potential technology in the area of high-capacity data storage currently dominated by magnetic data storage and conventional optical data storage.
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Holographic Versatile Disc
The Holographic Versatile Disc (HVD) is an optical disc technology developed between April 2004 and mid-2008 that can store up to several terabytes of data on an optical disc 10 cm or 12 cm in diameter.
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Human-readable medium
A human-readable medium or human-readable format is a representation of data or information that can be naturally read by humans.
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Industrial robot
An industrial robot is a robot system used for manufacturing.
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Information repository
An information repository is an easy way to deploy a secondary tier of data storage that can comprise multiple, networked data storage technologies running on diverse operating systems, where data that no longer needs to be in primary storage is protected, classified according to captured metadata, processed, de-duplicated, and then purged, automatically, based on data service level objectives and requirements.
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Information security
Information security, sometimes shortened to InfoSec, is the practice of preventing unauthorized access, use, disclosure, disruption, modification, inspection, recording or destruction of information.
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Input/output
In computing, input/output or I/O (or, informally, io or IO) is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system.
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Instruction set architecture
An instruction set architecture (ISA) is an abstract model of a computer.
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Integrated circuit
An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, normally silicon.
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Internet
The Internet is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide.
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Jeffrey Vitter
Jeffrey Scott Vitter is a U.S. computer scientist and academic administrator.
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JPEG
JPEG is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography.
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Laptop
A laptop, also called a notebook computer or just notebook, is a small, portable personal computer with a "clamshell" form factor, having, typically, a thin LCD or LED computer screen mounted on the inside of the upper lid of the "clamshell" and an alphanumeric keyboard on the inside of the lower lid.
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Laser diode
A laser diode, (LD), injection laser diode (ILD), or diode laser is a semiconductor device similar to a light-emitting diode in which the laser beam is created at the diode's junction.
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Latency (engineering)
Latency is a time interval between the stimulation and response, or, from a more general point of view, a time delay between the cause and the effect of some physical change in the system being observed.
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List of file formats
This is a list of file formats used by computers, organized by type.
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Local area network
A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building.
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Longitudinal wave
Longitudinal waves are waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of propagation of the wave.
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Magnetic storage
Magnetic storage or magnetic recording is the storage of data on a magnetized medium.
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Magnetic tape data storage
Magnetic tape data storage is a system for storing digital information on magnetic tape using digital recording.
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Magnetic-core memory
Magnetic-core memory was the predominant form of random-access computer memory for 20 years between about 1955 and 1975.
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Magnetism
Magnetism is a class of physical phenomena that are mediated by magnetic fields.
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Magnetization
In classical electromagnetism, magnetization or magnetic polarization is the vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material.
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Magneto-optical drive
A magneto-optical drive is a kind of optical disc drive capable of writing and rewriting data upon a magneto-optical disc.
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Mass storage
In computing, mass storage refers to the storage of large amounts of data in a persisting and machine-readable fashion.
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Megabyte
The megabyte is a multiple of the unit byte for digital information.
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Memory address
In computing, a memory address is a reference to a specific memory location used at various levels by software and hardware.
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Memory cell
Memory cell may refer to.
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Memory cell (computing)
The memory cell is the fundamental building block of computer memory.
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Memory hierarchy
In computer architecture, the memory hierarchy separates computer storage into a hierarchy based on response time.
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Memory leak
In computer science, a memory leak is a type of resource leak that occurs when a computer program incorrectly manages memory allocations in such a way that memory which is no longer needed is not released.
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Memory management
Memory management is a form of resource management applied to computer memory.
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Memory management unit
A memory management unit (MMU), sometimes called paged memory management unit (PMMU), is a computer hardware unit having all memory references passed through itself, primarily performing the translation of virtual memory addresses to physical addresses.
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Memory protection
Memory protection is a way to control memory access rights on a computer, and is a part of most modern instruction set architectures and operating systems.
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Memory refresh
Memory refresh is the process of periodically reading information from an area of computer memory and immediately rewriting the read information to the same area without modification, for the purpose of preserving the information.
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Mercury (element)
Mercury is a chemical element with symbol Hg and atomic number 80.
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Metadata
Metadata is "data that provides information about other data".
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Millisecond
A millisecond (from milli- and second; symbol: ms) is a thousandth (0.001 or 10−3 or 1/1000) of a second.
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Molecular memory
Molecular memory is a term for data storage technologies that use molecular species as the data storage element, rather than e.g. circuits, magnetics, inorganic materials or physical shapes.
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Morgan Kaufmann Publishers
Morgan Kaufmann Publishers is a Burlington, Massachusetts (San Francisco, California until 2008) based publisher specializing in computer science and engineering content.
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MPEG-4
MPEG-4 is a method of defining compression of audio and visual (AV) digital data.
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Multimedia
Multimedia is content that uses a combination of different content forms such as text, audio, images, animations, video and interactive content.
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Nanosecond
A nanosecond (ns) is an SI unit of time equal to one thousand-millionth of a second (or one billionth of a second), that is, 1/1,000,000,000 of a second, or 10 seconds.
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NCR CRAM
CRAM, or Card Random Access Memory, model 353-1, was a data storage device invented by NCR, which first appeared on their model NCR-315 mainframe computer in 1962.
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Nearline storage
Nearline storage (a portmanteau of "near" and "online storage") is a term used in computer science to describe an intermediate type of data storage that represents a compromise between online storage (supporting frequent, very rapid access to data) and offline storage/archiving (used for backups or long-term storage, with infrequent access to data).
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Network File System
Network File System (NFS) is a distributed file system protocol originally developed by Sun Microsystems in 1984, allowing a user on a client computer to access files over a computer network much like local storage is accessed.
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Network-attached storage
Network-attached storage (NAS) is a file-level computer data storage server connected to a computer network providing data access to a heterogeneous group of clients.
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Noise-predictive maximum-likelihood detection
Noise-Predictive Maximum-Likelihood (NPML) is a class of digital signal-processing methods suitable for magnetic data storage systems that operate at high linear recording densities.
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Non-RAID drive architectures
The most widespread standard for configuring multiple hard disk drives is RAID (Redundant Array of Inexpensive/Independent Disks), which comes in a number of standard configurations and non-standard configurations.
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Non-volatile memory
Non-volatile memory (NVM) or non-volatile storage is a type of computer memory that can retrieve stored information even after having been power cycled.
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Nucleotide
Nucleotides are organic molecules that serve as the monomer units for forming the nucleic acid polymers deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all life-forms on Earth.
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Numerical digit
A numerical digit is a single symbol (such as "2" or "5") used alone, or in combinations (such as "25"), to represent numbers (such as the number 25) according to some positional numeral systems.
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Object storage
Object storage (also known as object-based storage) is a computer data storage architecture that manages data as objects, as opposed to other storage architectures like file systems which manage data as a file hierarchy, and block storage which manages data as blocks within sectors and tracks.
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Online and offline
In computer technology and telecommunications, online indicates a state of connectivity, and offline indicates a disconnected state.
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Operating system
An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.
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Optical disc
In computing and optical disc recording technologies, an optical disc (OD) is a flat, usually circular disc which encodes binary data (bits) in the form of pits (binary value of 0 or off, due to lack of reflection when read) and lands (binary value of 1 or on, due to a reflection when read) on a special material (often aluminium) on one of its flat surfaces.
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Optical disc drive
In computing, an optical disc drive (ODD) is a disc drive that uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to or from optical discs.
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Optical jukebox
An optical jukebox is a robotic data storage device that can automatically load and unload optical discs, such as Compact Disc, DVD, Ultra Density Optical or Blu-ray disc and can provide terabytes (TB) and petabytes (PB) of tertiary storage.
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Optical storage
Optical storage is the storage of data on an optically readable medium.
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Optical tape
Optical tape is a medium for optical storage generally consisting of a long and narrow strip of plastic onto which patterns can be written and from which the patterns can be read back.
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Page (computer memory)
A page, memory page, or virtual page is a fixed-length contiguous block of virtual memory, described by a single entry in the page table.
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Page address register
A page address register (PAR) contains the physical addresses of pages currently held in the main memory of a computer system.
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Paging
In computer operating systems, paging is a memory management scheme by which a computer stores and retrieves data from secondary storage for use in main memory.
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Paper data storage
Paper data storage refers to the use of paper as a data storage device.
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Petabyte
The petabyte is a multiple of the unit byte for digital information.
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Phase-change material
A phase change material (PCM) is a substance with a high heat of fusion which, melting and solidifying at a certain temperature, is capable of storing and releasing large amounts of energy.
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Phase-change memory
Phase-change memory (also known as PCM, PCME, PRAM, PCRAM, OUM (ovonic unified memory) and C-RAM or CRAM (chalcogenide RAM)) is a type of non-volatile random-access memory.
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Photopolymer
A photopolymer or light-activated resin is a polymer that changes its properties when exposed to light, often in the ultraviolet or visible region of the electromagnetic spectrum.
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Polymer
A polymer (Greek poly-, "many" + -mer, "part") is a large molecule, or macromolecule, composed of many repeated subunits.
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Proceedings of the IEEE
The Proceedings of the IEEE is a monthly peer-reviewed scientific journal published by the Institute of Electrical and Electronics Engineers (IEEE).
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Processor register
In computer architecture, a processor register is a quickly accessible location available to a computer's central processing unit (CPU).
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Punched card
A punched card or punch card is a piece of stiff paper that can be used to contain digital data represented by the presence or absence of holes in predefined positions.
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Punched tape
Punched tape or perforated paper tape is a form of data storage, consisting of a long strip of paper in which holes are punched to store data.
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Radiation
In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium.
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RAID
RAID (Redundant Array of Independent Disks, originally Redundant Array of Inexpensive Disks) is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both.
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RAM drive
A RAM drive (also called a RAM disk) is a block of random-access memory (primary storage or volatile memory) that a computer's software is treating as if the memory were a disk drive (secondary storage).
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RAM parity
RAM parity checking is the storing of a redundant parity bit representing the parity (odd or even) of a small amount of computer data (typically one byte) stored in random access memory, and the subsequent comparison of the stored and the computed parity to detect whether a data error has occurred.
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Random access
In computer science, random access (more precisely and more generally called direct access) is the ability to access any item of data from a population of addressable elements roughly as easily and efficiently as any other, no matter how many elements may be in the set.
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Random-access memory
Random-access memory (RAM) is a form of computer data storage that stores data and machine code currently being used.
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Randomness
Randomness is the lack of pattern or predictability in events.
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Read-only memory
Read-only memory (ROM) is a type of non-volatile memory used in computers and other electronic devices.
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Removable media
In computer storage, some types of removable media are designed to be read to or written to by removable readers, writers and drives.
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Retronym
A retronym is a newer name for an existing thing that differentiates the original form or version from a more recent one.
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Sar (Unix)
System Activity Report (sar) is a Unix System V-derived system monitor command used to report on various system loads, including CPU activity, memory/paging, interrupts, device load, network and swap space utilization.
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Second
The second is the SI base unit of time, commonly understood and historically defined as 1/86,400 of a day – this factor derived from the division of the day first into 24 hours, then to 60 minutes and finally to 60 seconds each.
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Selectron tube
The Selectron was an early form of digital computer memory developed by Jan A. Rajchman and his group at the Radio Corporation of America (RCA) under the direction of Vladimir K. Zworykin.
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Semiconductor
A semiconductor material has an electrical conductivity value falling between that of a conductor – such as copper, gold etc.
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Semiconductor memory
Semiconductor memory is a digital electronic data storage device, often used as computer memory, implemented with semiconductor electronic devices on an integrated circuit (IC).
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Sequential access
In computer science, sequential access means that a group of elements (such as data in a memory array or a disk file or on magnetic tape data storage) is accessed in a predetermined, ordered sequence.
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Server Message Block
In computer networking, Server Message Block (SMB), one version of which was also known as Common Internet File System (CIFS), operates as an application-layer network protocol mainly used for providing shared access to files, printers, and serial ports and miscellaneous communications between nodes on a network.
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Software
Computer software, or simply software, is a generic term that refers to a collection of data or computer instructions that tell the computer how to work, in contrast to the physical hardware from which the system is built, that actually performs the work.
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Solid-state drive
A solid-state drive (SSD) is a solid-state storage device that uses integrated circuit assemblies as memory to store data persistently.
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Stable storage
Stable storage is a classification of computer data storage technology that guarantees atomicity for any given write operation and allows software to be written that is robust against some hardware and power failures.
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State (computer science)
In information technology and computer science, a program is described as stateful if it is designed to remember preceding events or user interactions; the remembered information is called the state of the system.
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Static random-access memory
Static random-access memory (static RAM or SRAM) is a type of semiconductor memory that uses bistable latching circuitry (flip-flop) to store each bit.
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Storage area network
A storage area network (SAN) is a Computer network which provides access to consolidated, block level data storage.
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Storage Networking World
Storage Networking World (SNW) is a conference for data storage professionals in the United States.
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Storage World Conference
Storage World Conference (sometimes called SWC) was a conference for data storage professionals in the United States.
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Tape library
In computer storage, a tape library, sometimes called a tape silo, tape robot or tape jukebox, is a storage device that contains one or more tape drives, a number of slots to hold tape cartridges, a barcode reader to identify tape cartridges and an automated method for loading tapes (a robot).
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Terabyte
The terabyte is a multiple of the unit byte for digital information.
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Thin-film memory
Thin-film memory is a high-speed variation of core memory developed by Sperry Rand in a government-funded research project.
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Throughput
In general terms, throughput is the maximum rate of production or the maximum rate at which something can be processed.
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Transistor
A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power.
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Twistor memory
Twistor is a form of computer memory formed by wrapping magnetic tape around a current-carrying wire.
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Ultra Density Optical
Ultra Density Optical (UDO) is an optical disc format designed for high-density storage of high-definition video and data.
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Uninterruptible power supply
An uninterruptible power supply or uninterruptible power source (UPS) is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails.
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Unit of measurement
A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity.
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USB flash drive
A USB flash drive, also variously known as a thumb drive, pen drive, gig stick, flash stick, jump drive, disk key, disk on key (after the original M-Systems DiskOnKey drive from 2000), flash-drive, memory stick (not to be confused with the Sony Memory Stick), USB stick or USB memory, is a data storage device that includes flash memory with an integrated USB interface.
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Vacuum tube
In electronics, a vacuum tube, an electron tube, or just a tube (North America), or valve (Britain and some other regions) is a device that controls electric current between electrodes in an evacuated container.
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Virtual memory
In computing, virtual memory (also virtual storage) is a memory management technique that provides an "idealized abstraction of the storage resources that are actually available on a given machine" which "creates the illusion to users of a very large (main) memory." The computer's operating system, using a combination of hardware and software, maps memory addresses used by a program, called virtual addresses, into physical addresses in computer memory.
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Virtual tape library
A virtual tape library (VTL) is a data storage virtualization technology used typically for backup and recovery purposes.
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Volatile memory
Volatile memory, in contrast to non-volatile memory, is computer memory that requires power to maintain the stored information; it retains its contents while powered on but when the power is interrupted, the stored data is quickly lost.
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Von Neumann architecture
The von Neumann architecture, which is also known as the von Neumann model and Princeton architecture, is a computer architecture based on the 1945 description by the mathematician and physicist John von Neumann and others in the First Draft of a Report on the EDVAC.
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Wait state
A wait state is a delay experienced by a computer processor when accessing external memory or another device that is slow to respond.
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Wide area network
A wide area network (WAN) is a telecommunications network or computer network that extends over a large geographical distance/place.
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Williams tube
The Williams tube, or the Williams–Kilburn tube after inventors Freddie Williams (26 June 1911 – 11 August 1977), and Tom Kilburn (11 August 1921 – 17 January 2001), is an early form of computer memory.
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Word (computer architecture)
In computing, a word is the natural unit of data used by a particular processor design.
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Write buffer
A write buffer is a type of data buffer used in certain CPU cache architectures like Intel's x86 and AMD64.
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Write once read many
Write once read many (WORM) describes a data storage device in which information, once written, cannot be modified.
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Write protection
Write protection is any physical mechanism that prevents modification or erasure of valuable data on a device.
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Zip drive
The Zip drive is a removable floppy disk storage system that was introduced by Iomega in late 1994.
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3D optical data storage
3D optical data storage is any form of optical data storage in which information can be recorded or read with three-dimensional resolution (as opposed to the two-dimensional resolution afforded, for example, by CD).
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References
[1] https://en.wikipedia.org/wiki/Computer_data_storage
