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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.

RAC - STA

  • rack - A rack, in an IT (information technology) context, is a supporting framework that holds hardware modules.
  • rack server (rack-mounted server) - A rack server, also called a rack-mounted server, is a computer dedicated to use as a server and designed to be installed in a framework called a rack.
  • rack unit - A rack unit (abbreviated as U, less commonly seen as RU) is a unit of measurement (1.
  • rack-mounted - Rack-mounted describes a unit of electronic equipment that is housed in a metal framework called an equipment rack.
  • radio charging - Radio charging is a wireless charging method used to charge items with small batteries and low power requirements, such as watches, hearing aids and wireless keyboards and mice.
  • RAID (redundant array of independent disks) - RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks or solid-state drives to protect data in the case of a drive failure.
  • RAM (Random Access Memory) - RAM (Random Access Memory) is the hardware in a computing device where the operating system (OS), application programs and data in current use are kept so they can be quickly reached by the device's processor.
  • RAMAC - (IBM had an earlier system called RAMAC.
  • RAS (row address strobe) - In computer memory technology, RAS (row address strobe) is a signal sent to a dynamic random access memory (DRAM) that tells it that an associated address is a row address.
  • Raspberry Pi ($35 computer) - Raspberry Pi is a small, single-board computer that costs $35.
  • RDRAM (Rambus DRAM) - Rambus Dynamic Random Access Memory, or RDRAM (Rambus DRAM), is a type of computer device active memory developed and licensed by Rambus Inc.
  • readerboard - A readerboard is a visual display board that conveys information about a wide variety of subjects, including advertising for products or services, travel, news or event information.
  • reagent - A reagent is a chemical substance that is used to create a reaction in combination with some other substance.
  • real-time clock (RTC) - A real-time clock (RTC) is a battery-powered clock that is included in a microchip in a computer motherboard.
  • reconfigurable tactile display (RTD) - A reconfigurable tactile display (RTD) is a control interface that provides physical touch input, but that can be configured by programming.
  • recordable DVD (writable DVD) - Recordable DVD (sometimes called writable DVD) is a DVD technology that allows a PC user to write data one or more times to a DVD with the PC's DVD drive.
  • Reduce, reuse, recycle (R3) - Reduce, reuse and recycle (R3) are the three essential components of environmentally-responsible consumer behavior.
  • redundant - Redundancy can have several meanings, but commonly refers to spare hardware that is kept online or to duplicate data.
  • refurbish - Refurbish, in everyday language, is "to renew or to restore to a new condition and/or appearance".
  • reliability - Reliability is an attribute of any computer-related component (software, or hardware, or a network, for example) that consistently performs according to its specifications.
  • Reliability, Availability and Serviceability (RAS) - Reliability, Availability and Serviceability (RAS) is a set of related attributes that must be considered when designing, manufacturing, purchasing or using a computer product or component.
  • removable media - Removable media is any type of storage device that can be removed from a computer while the system is running.
  • replicator - A replicator is an object or organism that can make copies of itself.
  • request for proposal (RFP) - A request for proposal (RFP) is a document that an organization, often a government agency or large enterprise, posts to elicit a response -- a formal bid -- from potential vendors for a desired IT solution.
  • resonance charging - Resonance charging is a wireless charging method for items that require large amounts of power, such as an electric car, robot, vacuum cleaner or laptop computer.
  • Restriction of Hazardous Substances Directive (RoHS Directive) - The Restriction of Hazardous Substances (RoHS) Directive is a set of criteria formulated by the European Union (EU) to regulate the use of toxic materials in electrical and electronic devices, systems, and toys.
  • reverse engineering - Reverse engineering is taking apart an object to see how it works in order to duplicate or enhance the object.
  • RIBLOE (Remote Insight Board -- Lights Out Edition) - The Remote Insight Board -- Lights Out Edition (RIBLOE) is a Peripheral Component Interconnect (PCI) card intended for the remote management of Compaq servers.
  • ring network - A ring network is a local area network (LAN) in which the nodes (workstations or other devices) are connected in a closed loop configuration.
  • robot - A robot is a machine designed to execute one or more tasks automatically with speed and precision.
  • Robot Ethics Charter - The Robot Ethics Charter is a proposed set of rules intended to govern the interaction between humans and robot s.
  • Robot Land - Robot Land is a proposed city for robotics research, development, testing and production in South Korea.
  • robotics - Robotics is a branch of engineering that involves the conception, design, manufacture, and operation of robots.
  • robust - Robust (pronounced RO-buhst) is an adjective commonly applied in marketing literature to information technology products in several ways.
  • rocker switch - A rocker switch is an on/off switch that rocks (rather than trips) when pressed, which means one side of the switch is raised while the other side is depressed much like a rocking horse rocks back and forth.
  • rollout - A rollout is a staged series of activities that often accumulate meaning as they occur.
  • Roomba (robotic vacuum) - Roomba is the name of a robotic vacuum produced by iRobot Corporation of Burlington, Mass.
  • RoundTable - Microsoft RoundTable is a videoconference device designed to simulate in-person meetings.
  • rugged IT - Rugged IT is a marketing term for hardware that is designed to operate in extremely harsh environments and conditions.
  • RZ (return-to-zero) - RZ (return-to-zero) refers to a form of digital data transmission in which the binary low and high states, represented by numerals 0 and 1, are transmitted by voltage pulses having certain characteristics.
  • S-Video (Super-Video, Y/C Video, component video) - S-Video (Super-Video, sometimes referred to as Y/C Video, or component video) is a video signal transmission in which the luminance signal and the chrominance signal are transmitted separately to achieve superior picture clarity.
  • S/390 - S/390 is IBM's large server (or mainframe) line of computer systems, which are marketed to the world's Fortune 1000 and many mid-size companies as a "tried-and-true" system with a history that stretches back to the System/360 of the early 1960s.
  • SAN file system - A SAN file system (that is, a storage area network file system) is programming that enables the sharing of the same copies of files stored on common storage media among multiple servers that may have different operating systems.
  • SAN island - A SAN island is a storage area network (SAN) that exists as a discrete, isolated entity within a larger SAN.
  • SATA 2 (SATA II) - SATA 2 is a marketing term to describe products that use a revised version of the Serial Advanced Technology Attachment (SATA) standard.
  • ScanDisk - ScanDisk is a Windows utility used to check your hard disk for errors and to correct problems that are found.
  • scanning tunneling microscope (STM) - A scanning tunneling microscope (STM) is a device that obtains images of the atoms on the surfaces of materials.
  • seat management - Seat management is a method of coordinating all the workstations in an enterprise network by overseeing the installation, operation, and maintenance of hardware and software at each workstation.
  • secondary storage - Secondary storage is storage for noncritical data that will not be frequently accessed.
  • sector - On a computer diskette or hard disk, a sector is one of the "pie slices" the diskette or disk is divided into.
  • SED TV (surface-conduction electron-emitter display television) - SED (surface-conduction electron-emitter display) is a flat-panel, high-resolution display developed by Canon and Toshiba that will compete with LCD and plasma displays.
  • Seebeck effect - The Seebeck effect describes the generation of electricity following the connection of two dissimilar electrical conductors or semiconductors that illustrates the thermoelectric effect.
  • Self-Monitoring Analysis & Reporting Technology (S.M.A.R.T.) - Self-Monitoring Analysis and Reporting Technology (S.
  • self-scanning checkout (self-checkout) - Self-scanning checkout, also called "self-checkout" is an automated process that enables shoppers to scan, bag, and pay for their purchases without human assistance.
  • semiconductor fab - A semiconductor fab is a manufacturing plant in which raw silicon wafers are turned into integrated circuits.
  • sequential consistency - In computers, sequential consistency is best defined by its inventor, Leslie Lamport, who declared that a multiprocessing system had sequential consistency if:".
  • sequential logic - Sequential logic is a form of binary circuit design that employs one or more inputs and one or more outputs, whose states are related by defined rules that depend, in part, on previous states.
  • SerDes (serializer/deserializer) - A SerDes or serializer/deserializer is an integrated circuit (IC or chip) transceiver that converts parallel data to serial data and vice-versa.
  • Serial ATA (Serial Advanced Technology Attachment or SATA) - The SATA storage protocol transmits data in serial fashion between hard drives and computer systems.
  • serial communications interface (SCI) - A serial communications interface (SCI) is a device that enables the serial (one bit at a time) exchange of data between a microprocessor and peripherals such as printers, external drives, scanners, or mice.
  • serial peripheral interface (SPI) - In a computer, a serial peripheral interface (SPI) is an interface that enables the serial (one bit at a time) exchange of data between two devices, one called a master and the other called a slave.
  • serial port server (serial server or port redirector) - A serial port server, also called a serial server or port redirector, is a device that transfers data between a computer serial port (COM port) and an Ethernet local area network (LAN).
  • serial presence detect (SPD) - When a computer is booted (started), serial presence detect (SPD) is information stored in anelectrically erasable programmable read-only memory (EEPROM) chip on a synchronous dynamic random access memory (SDRAM) memory module that tells thebasic input/output system (BIOS) the module's size, data width, speed, and voltage.
  • serial-attached SCSI (SAS) - Serial-attached SCSI (SAS) is a point-to-point protocol used to transfer digital data between servers and SAS storage devices.
  • server accelerator card (SSL card) - A server accelerator card (also known as an SSL card) is a Peripheral Component Interconnect (PCI) card used to generate encryption keys for secure transactions on e-commerce Web sites.
  • server farm (Web farm, Web server farm) - A server farm is a group of computers acting as servers and housed together in a single location.
  • server hardware degradation - Server hardware degradation is the gradual breakdown of the physical parts of a server.
  • server refresh cycle - The server refresh cycle is the length of time that normally passes between installations of new servers and related hardware in a data center.
  • server virtualization - Server virtualization is a process that creates and abstracts multiple virtual instances on a single server.
  • seven wastes - The seven wastes are categories of unproductive manufacturing practices identified by Taiichi Ohno, the father of the Toyota Production System (TPS).
  • SGI (Silicon Graphics) - SGI (Silicon Graphics) is a leading manufacturer of high-performance computing, data management, and visualization products.
  • shadow RAM - Shadow RAM is a copy of Basic Input/Output Operating System (BIOS) routines from read-only memory (ROM) into a special area of random access memory (RAM) so that they can be accessed more quickly.
  • shared memory - In computer programming, shared memory is a method by which program processes can exchange data more quickly than by reading and writing using the regular operating system services.
  • shotgun debugging - Shotgun debugging is the debugging of a program, hardware, or system problem using the approach of trying several possible solutions at the same time in the hope that one of them will work.
  • silicon photonics - Silicon photonics is an evolving technology in which data is transferred among computer chips by optical rays.
  • SIMM (single in-line memory module) - A SIMM (single in-line memory module) is a module containing one or several random access memory (RAM) chips on a small circuit board with pins that connect to the computer motherboard.
  • SIMO (single input, multiple output) - SIMO (single input, multiple output) is an antenna technology for wireless communications in which multiple antennas are used at the destination (receiver).
  • SimpliVity - SimpliVity Corp.
  • SISO (single input, single output) - SISO (single input, single output) refers to a wireless communications system in which one antenna is used at the source (transmitter) and one antenna is used at the destination (receiver).
  • small form factor (SFF) - Small form factor (SFF) refers to any of several physically compact connector designs that have been developed for use in fiber optic systems.
  • small form-factor pluggable (SFP) - Small form-factor pluggable (SFP) is a specification for a new generation of optical modular transceivers.
  • smart antenna - A smart antenna is a digital wireless communications antenna system that takes advantage of diversity effect at the source (transmitter), the destination (receiver), or both.
  • smart card - A smart card is a physical card that has an embedded integrated chip that acts as a security token.
  • Smart Display - Smart Display is a wireless touch screen display device in development at Microsoft.
  • smart home or building (home automation or domotics) - A smart home is a residence that uses internet-connected devices to enable the remote monitoring and management of appliances and systems, such as lighting and heating.
  • smart meter - A smart meter is an Internet-capable device that measures energy, water or natural gas consumption of a building or home.
  • smoke testing - Smoke testing, also called build verification testing or build acceptance testing, is nonexhaustive software analysis that ascertains that the most crucial functions of a program work but does not delve into finer details.
  • SMP (symmetric multiprocessing) - SMP (symmetric multiprocessing) is the processing of programs by multiple processors that share a common operating system and memory.
  • softcooling (software cooling) - Softcooling is a software-based method of computer component cooling, conducted either by adjusting component settings or by using softcooling products.
  • SOLED (stacked organic light-emitting device) - SOLED (stacked organic light-emitting device) is a display technology from the Universal Display Corporation (UDC) that uses a stack of transparent organic light-emitting devices (TOLED s) to improve resolution and enhance full-color quality.
  • solid state storage technologies comparison - Solid-state storage (SSS) is an increasingly popular backup alternative to traditional storage technologies such as the hard disk drive (HDD), compact disc, rewriteable (CD-RW), and digital versatile disc RAM (DVD-RAM).
  • solid-state lighting (SSL) - Solid-state lighting (SSL) is a technology in which light-emitting diodes (LEDs) replace conventional incandescent and fluorescent lamps for general lighting purposes.
  • solid-state storage - Solid-state storage (SSS) is a type of computer storage media made from silicon microchips.
  • sonar (sound navigation and ranging) - Sonar is an acronym (like radar, now spelled with all lower-case letters) for sound navigation and ranging.
  • sound card - A sound card (also referred to as an audio card) is a peripheral device that attaches to the ISA or PCI slot on a motherboard to enable the computer to input, process, and deliver sound.
  • Southbridge - Southbridge is an Intel chipset that manages the basic forms of input/output (I/O) such as Universal Serial Bus (USB), serial, audio, Integrated Drive Electronics (IDE), and Industry Standard Architecture (ISA) I/O in a computer.
  • spectrum analyzer - A spectrum analyzer is a device that displays signal amplitude (strength) as it varies by signal frequency.
  • spindle - A spindle is a shaft that holds rotating hard disk drive (HDD) platters in place.
  • spintronics - Spintronics is an emerging field of nanoscale electronics involving the detection and manipulation of electron spin.
  • SSD (solid-state drive) - An SSD (solid-state drive) is a type of nonvolatile storage media that stores persistent data on solid-state flash memory.

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  • PCI DSS (Payment Card Industry Data Security Standard)

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    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

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    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

  • cloud disaster recovery (cloud DR)

    Cloud disaster recovery (cloud DR) is a combination of strategies and services intended to back up data, applications and other ...

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