Browse Definitions :

Hardware

Terms related to computer hardware, including definitions about cables, connectors and power supply units and words and phrases about computing peripheral devices including the keyboard, mouse, audio speakers, and printers.

COM - EXT

  • combinatorial logic - Combinatorial logic is a concept in which two or more input states define one or more output states, where the resulting state or states are related by defined rules that are independent of previous states.
  • commodity - A commodity is a type of widely-available product that is not markedly dissimilar from one unit to another.
  • commodity hardware - Commodity hardware, in an IT context, is a device or device component that is relatively inexpensive, widely available and more or less interchangeable with other hardware of its type.
  • common test platform (CTP) - A common test platform (CTP), also called an open test standard (OTS), is a set of specifications defining test methods for diverse components of computer and electronic systems to be marketed as complete products.
  • Communication and Networking Riser (CNR) - Communication and Networking Riser (CNR), which was developed by Intel, is an open industry standard for a scalable riser card, which is a hardware device that plugs into a motherboard and holds chips for functions like modems and audio devices.
  • compact disc (CD) - A compact disc is a portable storage medium that can be used for recording, storing and playing back audio, video and other data in digital form.
  • compact fluorescent light bulb (CFL) - A compact fluorescent light bulb (CFL) is a fluorescent light bulb that has been compressed into the size of a standard-issue incandescent light bulb.
  • CompactFlash card (CF card) - A CompactFlash card (CF card) is a memory card format developed by SanDisk in 1994 that uses flash memory technology to store data on a very small portable device.
  • compaction - In a data center, compaction is the reduction or consolidation of hardware to make better use of physical floor space.
  • compatibility - Compatibility is the capacity for two systems to work together without having to be altered to do so.
  • composable infrastructure - A composable infrastructure is a framework whose physical compute, storage and network fabric resources are treated as services.
  • composite video (baseband video or RCA video) - Composite video, also called baseband video or RCA video, is the analog waveform that conveys the image data in a conventional National Television Standards Committee (NTSC) television signal.
  • computer forensics (cyber forensics) - Computer forensics is the application of investigation and analysis techniques to gather and preserve evidence from a particular computing device in a way that is suitable for presentation in a court of law.
  • computer hardware chart - This handy computer hardware quick look-up was designed by Sonic84.
  • Computer Misuse Act 1990 (CMA) - The Computer Misuse Act 1990 (CMA) is an act of the UK Parliament passed in 1990.
  • computer worm - A computer worm is a type of malicious software program whose primary function is to infect other computers while remaining active on infected systems.
  • computerized maintenance management system (CMMS) - A computerized maintenance management system (CMMS) is software that helps operations and maintenance staff identify and track the status of maintenance tasks and availability of replacement parts.
  • consumer device - Consumer device is an industry term for Internet-capable mobile computers that are marketed to individuals, not businesses.
  • conventional memory - DOS memory, sometimes referred to as conventional memory, refers to the memory -addressing scheme used in the original IBM and compatible PCs.
  • converged infrastructure reference architecture - A converged infrastructure reference architecture is a document that stipulates the components, design and configuration a CI appliance, which includes storage, compute and networking resources within a single-box system.
  • convertible tablet - A convertible tablet is a computer that can function as either a standalone touch screen device or as a notebook with a physical keyboard.
  • coprocessor - A coprocessor is a special set of circuits in a microprocessor chip that is designed to manipulate numbers or perform some other specialized function more quickly than the basic microprocessor circuits could perform the same task.
  • core router - A core router is a router that forwards packets to computer hosts within a network (but not between networks).
  • CPE device - A CPE device is telecommunications hardware located at the home or business of a customer.
  • crossbar latch - A crossbar latch, also called a molecular crossbar latch, is a nanoscale device with properties similar to those of a conventional silicon transistor, but physically much smaller, having a diameter of approximately 2 nanometers (nm, where 1 nm = 10-9 m).
  • cryogenics - Cryogenics is the study of material sciences at extremely low temperatures.
  • CULV (consumer ultra-low voltage) - CULV (consumer ultra-low voltage) is a line of Intel processors for ultra-light notebook computers.
  • custom factory integration (CFI) - Custom factory integration (CFI) is an arrangement that a computer equipment vendor makes with a customer in which programs and files are pre-installed and the equipment is configured and tested at the factory prior to delivery.
  • cycle time - Cycle time is the time, usually measured in nanosecond s, between the start of one random access memory (RAM) access to the time when the next access can be started.
  • D-VHS (Digital Video Home System) - D-VHS (Digital Video Home System) is a digital enhancement of the Video Home System (VHS) videocassette recording (VCR) technology that was developed by Japan Victor Company (JVC) in 1976.
  • DASD (direct access storage device) - Direct access storage device (DASD, pronounced DAZ-dee), is a general term for magnetic disk storage devices.
  • DAT USB drive - A DAT USB drive is a tape drive with digital audio tape (DAT) that can be plugged into a Universal Serial Bus (USB) connection as a simple and relatively low-cost way to back up data routinely, especially on servers.
  • data center chiller - A data center chiller is a cooling system used in a data center to remove heat from one element and deposit it into another element.
  • data center evaporative cooling (swamp cooling) - Evaporative cooling, also known as swamp cooling, is a strategy for cooling air that takes advantage of the drop in temperature that occurs when water that's exposed to moving air begins to change to gas.
  • data glove - A data glove is an interactive device, resembling a glove worn on the hand, which facilitates tactile sensing and fine-motion control in robotics and virtual reality.
  • data storage - Data storage is the collective methods and technologies that capture and retain digital information on electromagnetic, optical or silicon-based storage media.
  • datacard - A datacard is any removable computer component, approximately the size of a credit card, that contains data, or that contains nonvolatile memory to which data can be written and from which data can be recovered.
  • daughterboard (or daughter board, daughter card, or daughtercard) - A daughterboard (or daughter board, daughter card, or daughtercard) is a circuit board that plugs into and extends the circuitry of another circuit board.
  • Daylight Saving Time patch - A Daylight Saving Time patch is a modular piece of code created to update systems, devices and programs for compatibility with new start and end dates for Daylight Saving Time (DST) in the United States, Canada and Bermuda.
  • DB-xx (DB-9, DB-15, DB-25, DB-50, DB-68) - DB-xx is the designation for a series of port connectors for attaching devices to computers.
  • DDR SDRAM (double data rate SDRAM) - DDR SDRAM (double data rate SDRAM) is synchronous dynamic RAM (SDRAM) that can theoretically improve memory clock speed to at least 200 MHz*.
  • decibels related to dipole antenna (dBd) - dBd (decibels related to dipole antenna) is a measure of the gain of an antenna system relative to a dipole antenna at radio frequency.
  • defragmenter - A defragmenter is a software utility that rearranges the fragments or discontiguous parts of each file stored on a computer hard disk so that the small, empty storage spaces adjacent to fragments can be used, effectively creating new storage space and possibly making file access faster.
  • DelFly - DelFly is a remotely controlled, camera-equipped, highly maneuverable aerial robot measuring less than 30 centimeters (12 inches) in length.
  • deliverable - Deliverable, as an adjective, describes something that can be delivered, such as a product or service.
  • dendrimer - A dendrimer (from Greek dendra for tree) is an artificially manufactured or synthesized molecule built up from branched units called monomers.
  • design reuse - In information technology, design reuse is the inclusion of previously designed components (blocks of logic or data) in software and hardware.
  • desktop gadget - A desktop gadget is a software widget, or a small application, that is designed to sit on a user's desktop screen in much the same way that apps reside on smartphones and tablets.
  • device ID (device identification) - A device ID (device identification) is a distinctive number associated with a smartphone or similar handheld device.
  • device relationship management (DRM) - Device relationship management (DRM) is enterprise software that enables the monitoring, managing, and servicing of intelligent devices over the Internet.
  • digital audio broadcasting (DAB) - .
  • Digital Data Storage (DDS, DDS-1, DDS-2, DDS-3, DDS-4) - Digital Data Storage (DDS) is a format for storing and backing up computer data on tape that evolved from the Digital Audio Tape (DAT) technology.
  • digital film - Digital film is any storage medium (such as a memory card, diskette, or recordable CD) used in a digital camera to capture and store images.
  • digital pen - A digital pen is a battery-operated writing instrument that allows the user to digitally capture a handwritten note or drawing.
  • digital printing - Digital printing describes the process of transferring a document on a personal computer or other digital storage device to a printing substrate by means of a device that accepts text and graphic output.
  • digital projector (digital projection display system) - A digital projector, also called a digital projection display system, is a specialized computer display that projects an enlarged image on a movie screen.
  • digital video - Digital video is audio/visual data in a binary format.
  • direct access - In computer storage, direct access is the ability to obtain data from a storage device by going directly to where it is physically located on the device rather than by having to sequentially look for the data at one physical location after another.
  • Direct R/3 - Direct R/3 is a partnership program between Dell Computer Corporation and the software company SAP that allows customers to use Dell's commercial Web site to order Dell products with pre-bundled, pre-configured AcceleratedSAP (ASAP) R/3 products.
  • direct sequence spread spectrum (DSSS) or direct sequence code division multiple access (DS-CDMA) - Direct sequence spread spectrum, also known as direct sequence code division multiple access (DS-CDMA), is one of two approaches to spread spectrum modulation for digital signal transmission over the airwaves.
  • direct-attached storage (DAS) - Direct-attached storage (DAS) is computer storage that is connected to one computer and not accessible to other computers.
  • directional sound - Directional sound is a technology that concentrates acoustic energy into a narrow beam so that it can be projected to a discrete area, much as a laser focuses light.
  • dish antenna - A dish antenna, also known simply as a dish, is common in microwave systems.
  • disk array - A disk array, also called a storage array, is a data storage system used for block-based storage, file-based storage or object storage.
  • disk cache - A disk cache is a mechanism for improving the time it takes to read from or write to a hard disk.
  • disk duplexing - Disk duplexing is a variation of disk mirroring in which each of multiple storage disks has its own SCSI controller.
  • disk-to-disk-to-tape (D2D2T) - Disk-to-disk-to-tape (D2D2T) is an approach to computer storage backup and archiving in which data is initially copied to backup storage on a disk and then later on copied again to tape.
  • diskette (floppy disk) - A diskette is a random access, removable data storage medium that can be used with personal computers.
  • DLT (digital linear tape) - Before the popular Linear Tape-Open Consortium came into existence, Quantum had its proprietary digital linear tape (DLT) format.
  • DoCoMo (NTT DoCoMo) - DoCoMo, also known as NTT DoCoMo, is a Japanese communications corporation that has introduced a line of cell phone sets that contain the equivalent of a digital smart card.
  • document reader - A document reader is a device that converts an electronic file or printed matter to a form suitable for use by people with visual impairment.
  • dongle - A dongle (pronounced DONG-uhl) is a mechanism for ensuring that only authorized users can copy or use specific software applications, especially very expensive programs.
  • dot-green - Dot-green is a shorthand way of describing the green computing movement that includes both hype and real innovation.
  • double-parity RAID - Double-parity RAID (redundant array of independent disks), also called diagonal-parity RAID, Advanced Data Guarding (RAID_ADG), or RAID-6, is a method of protecting against multiple storage drive failures by creating two sets of parity data on an array of hard disks.
  • doubler - A doubler is an electronic device that doubles the frequency of an input signal.
  • DRAM (dynamic random access memory) - Dynamic random access memory (DRAM) is a common type of random access memory (RAM) used in personal computers, workstations and servers.
  • DRDRAM (Rambus Dynamic Random Access Memory) - RDRAM (Rambus Dynamic Random Access Memory) is a memory subsystem that promises to transfer up to 1.
  • dropout - A dropout is a small loss of data in an audio or video file on tape or disk.
  • DTE (Data Terminal Equipment) - In computer data transmission, DTE (Data Terminal Equipment) is the RS-232C interface that a computer uses to exchange data with a modem or other serial device.
  • DTTV (digital terrestrial television) - DTTV (digital terrestrial television, sometimes also abbreviated DTT) is digital television (DTV) broadcast entirely over earthbound circuits.
  • dual boot - A dual boot system is a computer system in which two operating systems are installed on the same hard drive, allowing either operating system to be loaded and given control.
  • duty cycle - Duty cycle is the proportion of time during which a component, device, or system is operated.
  • DVD (digital video disk) - DVD is an optical disc technology with a 4.
  • DVD-RAM - DVD-RAM is a DVD(optical disc) technology for high-capacity data storage for computers.
  • DVI (Digital Visual Interface) - DVI (Digital Visual Interface) is a specification created by the Digital Display Working Group (DDWG) to accommodate analog and digital monitors with a single connector.
  • E Ink (eInk) - E Ink is an electronic device that is similar to a computer display, but with qualities that enable it to be used for applications such as eBooks, electronic newspapers, portable signs, and foldable, rollable displays.
  • e-bomb (electromagnetic bomb) - An e-bomb (electromagnetic bomb) is a weapon that uses an intense electromagnetic field to create a brief pulse of energy that affects electronic circuitry without harming humans or buildings.
  • e-reader (electronic reader) - An e-reader (electronic reader) is a device for reading content, such as e-books, newspapers and documents.
  • ear and mouth (E&M) - Ear and mouth (E&M) is a technology in voice over IP (VoIP) that uses a traditional telephone handset with an earphone (or earpiece) for listening to incoming audio and a microphone (or mouthpiece) for transmitting audio.
  • economizer - An economizer is a mechanical device used to reduce energy consumption.
  • ECOphlex (PHase-change Liquid EXchange) - ECOphlex (PHase-change Liquid EXchange) is an efficient and environmentally-friendly computer component cooling technology.
  • EDO RAM (extended data output RAM) - EDO (extended data output) RAM is a type of random access memory (RAM) chip that improves the time to read from memory on faster microprocessors such as the Intel Pentium.
  • Electric plugs for each country - Electrical plugs and voltages for different countries around the world.
  • Electrical Discharge Machine or Machining (EDM) - Electrical Discharge Machine or Machining (EDM) is a machine process for making high-precision molds, dies or machine parts.
  • electrical power management system (EPMS) - An electrical power management system (EPMS) is an electronic system that provides fine grained information about the flow of power in an electrical power generation system or power substation.
  • electro-optical fingerprint recognition - Electro-optical fingerprint recognition is a biometric technology that provides for the scanning, comparison, and identification of fingerprints without the traditional need for ink and paper.
  • electrochemical cell - An electrochemical cell is a device that is essentially a contained chemical reaction that produces an electrical current.
  • electronic paper display (EPD) - An electronic paper display (EPD) is an electrically-charged surface that replicates the look and experience of ink on paper.
  • end effector - In robotics, an end effector is a device or tool that's connected to the end of a robot arm where the hand would be.
  • Energy Star - Energy Star is a government-backed labeling program that helps people and organizations save money and reduce greenhouse gas emissions by identifying factories, office equipment, home appliances and electronics that have superior energy efficiency.

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    VRAM (video RAM) is a reference to any type of random access memory (RAM) used to store image data for a computer display.

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