Browse Definitions :

Browse Definitions by Alphabet

HAR - HEA

  • hardware emulation - Hardware emulation is the use of one hardware device to mimic the function of another hardware device.
  • hardware load balancing device - A hardware load-balancing device (HLD), also known as a layer 4-7 router, is a physical unit that directs computers to individual servers in a network, based on factors such as server processor utilization, the number of connections to a server, or the overall server performance.
  • hardware load-balancing device - A hardware load-balancing device (HLD), also known as a layer 4-7 router, is a physical unit that directs computers to individual servers in a network, based on factors such as server processor utilization, the number of connections to a server, or the overall server performance.
  • hardware load-balancing device (HLD) - A hardware load-balancing device (HLD), also known as a layer 4-7 router, is a physical unit that directs computers to individual servers in a network, based on factors such as server processor utilization, the number of connections to a server, or the overall server performance.
  • hardware RAID (hardware redundant array of independent disk) - Hardware RAID is a form of RAID where processing is done externally.
  • hardware security - Hardware security is vulnerability protection that comes in the form of a physical device rather than software that is installed on the hardware of a computer system.
  • hardware security module (HSM) - A hardware security module (HSM) is a physical device that provides extra security for sensitive data.
  • hardware virtualization - Hardware virtualization, which is also known as server virtualization or simply virtualization, is the abstraction of computing resources from the software that uses those resources.
  • hardware VPN - A hardware VPN is a virtual private network ( VPN) based on a single, stand-alone device.
  • hardware vulnerability - A hardware vulnerability is an exploitable weakness in a computer system that enables attack through remote or physical access to system hardware.
  • hardware-as-a-service (in managed services) - Hardware-as-a-service (HaaS) is a procurement model that is similar to leasing or licensing in which hardware that belongs to a managed service provider (MSP) is installed at a customer's site and a service level agreement (SLA) defines the responsibilities of both parties.
  • hardware-assisted virtualization - Hardware-assisted virtualization is the use of a computer's physical components to support the mechanism that abstracts and manages the computer's underlying resources from its operating system and the applications that run on it.
  • Hardy Heron - Hardy Heron is the code name for version 8.
  • harmonic - A harmonic is a signal or wave whose frequency is an integral (whole-number) multiple of the frequency of some reference signal or wave.
  • Hartree energy - The Hartree energy is a physical constant equal to twice the binding energy of the electron in the ground state (the lowest-energy state) of the hydrogen atom.
  • hash - Hashing is the transformation of a string of characters into a usually shorter fixed-length value or key that represents the original string.
  • Hash based Message Authentication Code - Hash-based Message Authentication Code (HMAC) is a message authentication code that uses a cryptographic key in conjunction with a hash function.
  • hash busting - A hash buster is a program that generates a string of text for insertion in a spam message so that, to a spam filter, the e-mail appears to be a different message each time it is sent.
  • hash function - Hashing is the transformation of a string of characters into a usually shorter fixed-length value or key that represents the original string.
  • Hash-based Message Authentication Code - Hash-based Message Authentication Code (HMAC) is a message authentication code that uses a cryptographic key in conjunction with a hash function.
  • Hash-based Message Authentication Code (HMAC) - Hash-based Message Authentication Code (HMAC) is a message authentication code that uses a cryptographic key in conjunction with a hash function.
  • HashiCorp - HashiCorp is a software company that provides a suite of modular DevOps infrastructure provisioning and management products.
  • hashing - Hashing is the transformation of a string of characters into a usually shorter fixed-length value or key that represents the original string.
  • hashtag - A hashtag is atag used to categorize posts on Twitter (tweets) according to topics.
  • Haswell - Haswell is the code name for Intel's 4th generation Core i-based processors.
  • hate speech - Hate speech is a verbal or written communication expressing a generalized negative opinion about a particular demographic, sometimes attacking an individual as a member of that group.
  • HAVA - The Help America Vote Act of 2002 (HAVA)is a federal program that reformed aspects of the United States election system.
  • HAVA (Help America Vote Act of 2002) - The Help America Vote Act of 2002 (HAVA)is a federal program that reformed aspects of the United States election system.
  • Have I Been Pwned (HIBP) - Have I Been Pwned (HIBP) is a website that allows users to search and find out if an email address’s password has been compromised.
  • HAVi - HAVi (Home Audio Visual) is a standard, developed by several leading electronics and computer manufacturers, that allows a number of different home-entertainment and communication devices to operate from a single controller device such as your TV set.
  • HAVi (Home Audio Visual) - HAVi (Home Audio Visual) is a standard, developed by several leading electronics and computer manufacturers, that allows a number of different home-entertainment and communication devices to operate from a single controller device such as your TV set.
  • Hawthorne effect - The Hawthorne effect is the modification of behavior by study participants in response to their knowledge that they are being observed or singled out for special treatment.
  • Hayes command set - Hayes command set is a specific programming language originally developed for the Hayes Smartmodem 300 baud modem during the late 1970s.
  • HBA - A host bus adapter (HBA) provides physical connectivity and input/output between a server and a network and/or storage device.
  • HC3 (HyperCore 3) - HC3 (HyperCore 3) is a hyper-converged appliance from Scale Computing.
  • HCCA (Health Care Compliance Association) - The Health Care Compliance Association (HCCA) is a nonprofit, individual membership organization that aims to help health care professionals with ethics and compliance.
  • HCI - HCI (human-computer interaction) is the study of how people interact with computers and to what extent computers are or are not developed for successful interaction with human beings.
  • HCI (human-computer interaction) - HCI (human-computer interaction) is the study of how people interact with computers and to what extent computers are or are not developed for successful interaction with human beings.
  • HD down converter - An HD (high-definition) downconverter is a device that converts high-definition television (HDTV) video to standard-definition video that can be viewed on conventional television (TV) receivers or computer monitors, or recorded on DVD.
  • HD downconverter - An HD (high-definition) downconverter is a device that converts high-definition television (HDTV) video to standard-definition video that can be viewed on conventional television (TV) receivers or computer monitors, or recorded on DVD.
  • HD downconverter (high-definition downconverter) - An HD (high-definition) downconverter is a device that converts high-definition television (HDTV) video to standard-definition video that can be viewed on conventional television (TV) receivers or computer monitors, or recorded on DVD.
  • HD DVD - HD-DVD (high-density DVD) is an optical digital storage medium with a capacity that far exceeds that of standard DVD media.
  • HD ROM - HD-ROM (High-Density - Read Only Memory) is a high-capacity storage technology developed at Norsam Technologies in conjunction with an IBM research group that enables a disk to store hundreds of times as much information as a CD-ROM.
  • HD up converter - An HD (high-definition) upconverter, also known as a digital television (DTV) upconverter, is a device that converts the digital data on a DVD to a format that can be viewed directly on a high-definition television (HDTV) receiver without intermediate conversion to an analog signal.
  • HD upconverter - An HD (high-definition) upconverter, also known as a digital television (DTV) upconverter, is a device that converts the digital data on a DVD to a format that can be viewed directly on a high-definition television (HDTV) receiver without intermediate conversion to an analog signal.
  • HD upconverter (high-definition upconverter) - An HD (high-definition) upconverter, also known as a digital television (DTV) upconverter, is a device that converts the digital data on a DVD to a format that can be viewed directly on a high-definition television (HDTV) receiver without intermediate conversion to an analog signal.
  • HD-DVD - HD-DVD (high-density DVD) is an optical digital storage medium with a capacity that far exceeds that of standard DVD media.
  • HD-DVD (high-density DVD) - HD-DVD (high-density DVD) is an optical digital storage medium with a capacity that far exceeds that of standard DVD media.
  • HD-ROM - HD-ROM (High-Density - Read Only Memory) is a high-capacity storage technology developed at Norsam Technologies in conjunction with an IBM research group that enables a disk to store hundreds of times as much information as a CD-ROM.
  • HD-ROM (High-Density - Read Only Memory) - HD-ROM (High-Density - Read Only Memory) is a high-capacity storage technology developed at Norsam Technologies in conjunction with an IBM research group that enables a disk to store hundreds of times as much information as a CD-ROM.
  • HD-SDI downconverter - An HD (high-definition) downconverter is a device that converts high-definition television (HDTV) video to standard-definition video that can be viewed on conventional television (TV) receivers or computer monitors, or recorded on DVD.
  • HDCD - HDCD (High Definition Compatible Digital) is a digital encoding and decoding process for compact disc and DVD audio recording.
  • HDCD (High Definition Compatible Digital) - HDCD (High Definition Compatible Digital) is a digital encoding and decoding process for compact disc and DVD audio recording.
  • HDCP - HDCP (High-bandwidth Digital Content Protection) is a specified method from Intel for protecting copyrighted digital entertainment content that uses the Digital Video Interface (DVI) by encrypting its transmission between the video source and the digital display (receiver).
  • HDCP (High-bandwidth Digital Content Protection) - HDCP (High-bandwidth Digital Content Protection) is a specified method from Intel for protecting copyrighted digital entertainment content that uses the Digital Video Interface (DVI) by encrypting its transmission between the video source and the digital display (receiver).
  • HDD - Hard disk drives are a type of physical storage media that use spinning disk platters to store nonsequential data in personal computers and enterprise data centers.
  • HDD form factor (hard disk drive form factor) - HDD form factor is the size or geometry of a hard disk drive, determining the device’s compatibility with the drive bays in a storage array or enclosure, server, portable computer or other computing device.
  • HDLC - HDLC (High-level Data Link Control) is a group of protocols or rules for transmitting data between network points (sometimes called nodes).
  • HDLC (High-level Data Link Control) - HDLC (High-level Data Link Control) is a group of protocols or rules for transmitting data between network points (sometimes called nodes).
  • HDMI - HDMI (High Definition Multimedia Interface) is a specification that combines video and audio into a single digital interface for use with digital versatile disc (DVD) players, digital television (DTV) players, set-top boxes, and other audiovisual devices.
  • HDMI - HDMI (High-Definition Multimedia Interface) is an industry standard for creating audio and video connections between high-definition electronic devices.
  • HDMI (High-Definition Multimedia Interface) - HDMI (High-Definition Multimedia Interface) is an industry standard for creating audio and video connections between high-definition electronic devices.
  • HDML - HDML (Handheld Device Markup Language) - often compared to Wireless Markup Language (WML) - is a language that allows the text portions of Web pages to be presented on cellular telephones and personal digital assistants (PDA) via wireless access.
  • HDML (Handheld Device Markup Language) - HDML (Handheld Device Markup Language) - often compared to Wireless Markup Language (WML) - is a language that allows the text portions of Web pages to be presented on cellular telephones and personal digital assistants (PDA) via wireless access.
  • HDSL - Also see our Fast guide to DSL.
  • HDSL (High bit-rate Digital Subscriber Line) - Also see our Fast guide to DSL.
  • HDTV - HDTV (high definition television) is a television display technology that provides picture quality similar to 35 mm.
  • HDTV (high definition television) - HDTV (high definition television) is a television display technology that provides picture quality similar to 35 mm.
  • HDTV downconverter - An HD (high-definition) downconverter is a device that converts high-definition television (HDTV) video to standard-definition video that can be viewed on conventional television (TV) receivers or computer monitors, or recorded on DVD.
  • HDX - Citrix HDX technology is a set of capabilities that work together to deliver a high-definition user experience of virtual desktops and applications to any device over any network from the data center.
  • head tracking - Head tracking is a software application that monitors a user’s head position and orientation.
  • head-end - A cable head-end (or headend) is the facility at a local cable TV office that originates and communicates cable TV services and cable modem services to subscribers.
  • headend - A cable head-end (or headend) is the facility at a local cable TV office that originates and communicates cable TV services and cable modem services to subscribers.
  • header - In information technology, a header is, in general, something that goes in front of something else and is usually repeated as a standard part of the units of something else.
  • headless Android - Headless Android is a version of the Android operating system designed for embedded devices that lack user interfaces.
  • headless CMS (headless content management system) - A headless content management system (CMS) delivers back-end capabilities for editing, organizing and storing all types of digital information, without regard to how that content is published, displayed or used.
  • headless commerce (headless e-commerce) - Headless commerce, also called headless e-commerce, is a platform architecture that decouples the front end of an e-commerce website with the back end.
  • headless server - A headless server is a computing device without a local interface that is dedicated to providing services to other computers and their users.
  • headless system - A headless system is a computer that operates without a monitor, graphical user interface (GUI) or the typical peripherals used to control it, such as a keyboard and mouse.
  • headroom - Attenuation-to-crosstalk ratio (ACR), also called headroom, is the difference, expressed as a figure in decibels (dB), between the signal attenuation produced by a wire or cable transmission medium and the near-end crosstalk (NEXT).
  • heads-up display (HUD) - A heads-up display (HUD) is a transparent or miniaturized display technology that does not require users to shift their gaze from where they are naturally looking.
  • Health Alert Network - Health Alert Network (HAN) is the early warning system run by the Center for Disease Control (CDC).
  • Health and Human Services�(HHS) - The U.S.
  • health apps - Health apps are application programs that offer health-related services for smartphones and tablet PCs.
  • health care cloud - A health care cloud is a cloud computing service used by health care providers for storing, maintaining and backing up personal heath information (PHI).
  • Health Data Repository - Clinical Data Repository/Health Data Repository (CHDR) is a storage interface between the data repositories of the Department of Defense and the Veterans Administration.
  • Health Indicator Warehouse - The Health Indicators Warehouse (HIW) is a national database of measurable characteristics that describe statistical aspects of health, causal factors of health or health issues, accessibility and use of healthcare, all of which are considered health indicators.
  • health informatics - Health informatics is the practice of acquiring, studying and managing health data and applying medical concepts in conjunction with health information technology systems to help clinicians provide better healthcare.
  • health information exchange - Health information exchange (HIE) is the electronic transmission of healthcare-related data among medical facilities, health information organizations -- companies that oversee and govern the exchange of this data -- and government agencies according to national standards.
  • Health Information Exchange (HIE) - Health information exchange (HIE) is the electronic transmission of healthcare-related data among medical facilities, health information organizations -- companies that oversee and govern the exchange of this data -- and government agencies according to national standards.
  • Health Information Technology for Economic and Clinical Health Act - The HITECH (Health Information Technology for Economic and Clinical Health) Act of 2009 is legislation that was created to stimulate the adoption of electronic health records (EHR) and the supporting technology in the United States.
  • Health Insurance Portability and Accountability Act - HIPAA (Health Insurance Portability and Accountability Act of 1996) is United States legislation that provides data privacy and security provisions for safeguarding medical information.
  • Health IT - Health IT (health information technology) is the area of IT involving the design, development, creation, use and maintenance of information systems for the healthcare industry.
  • Health IT (health information technology) - Health IT (health information technology) is the area of IT involving the design, development, creation, use and maintenance of information systems for the healthcare industry.
  • Healthcare CIO (healthcare chief information officer) - A healthcare CIO is a healthcare executive with an influence over technology purchasing and other IT business decisions.
  • Healthcare Information and Management Systems Society - The Healthcare Information and Management Systems Society (HIMSS) is a nonprofit organization whose goal is to promote the best use of information technology and management systems in the health care industry.
  • heap - In certain programming languages including C and Pascal, a heap is an area of pre-reserved computer main storage (memory) that a program process can use to store data in some variable amount that won't be known until the program is running.
  • Heap - Heap is a user analytics tool which can be utilized to capture all web, mobile and cloud-based user interactions in an application.
  • hearables - Hearables are wireless wearable computing earpieces that enable voice input and return results audibly to the user’s ear.
  • Heartbeat - Heartbeat is a program that runs specialized scripts automatically whenever a system is initialized or rebooted.

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