Computing and IT terminology · MLC-0101

Computing and IT terms: D (114)

• DACDigital-to-Analog Converter, an electronic device that converts a digital signal into an analog electrical...
• Dark modeA display setting in user interfaces that uses a dark background with light-colored text and elements. This...
• DASA type of computer storage that is attached directly to a single computer and not accessible through a...
• DashboardA graphical user interface that presents key performance indicators, metrics, and data visualizations in a...
• DataA collection of discrete values or symbols that represent information, such as facts, statistics, or...
• Data centerA dedicated facility used to house computer systems and associated components, such as telecommunications and...
• Data managementThe administrative process of acquiring, validating, storing, protecting, and processing data to make it...
• Data miningThe process of discovering patterns, insights, and anomalies from large datasets using a combination of...
• Data scienceAn interdisciplinary field that uses scientific methods, processes, algorithms, and systems to extract...
• Data storageThe recording of digital information on a storage medium for later retrieval by a computer or other device...
• Data transfer rateThe average number of bits, characters, or blocks of data conveyed per unit of time from one device or...
• Data typeA classification that specifies the kind of value a variable can hold in a programming language, determining...
• DatabaseAn organized collection of structured information, or data, stored electronically in a computer system. It is...
• DatagramA self-contained, independent unit of data that carries sufficient information to be routed from a source to...
• DAWAn abbreviation for 'Digital Audio Workstation', an electronic device or application software used for...
• DDLAn abbreviation for 'Data Definition Language', a standard for commands used to define and manage the...
• DDRDouble Data Rate, a type of synchronous dynamic random-access memory that transfers data twice per clock...
• DDR2Double Data Rate 2, a second generation of DDR SDRAM that improves upon its predecessor by allowing higher...
• DDR3A generation of synchronous dynamic random-access memory specified by the JEDEC Solid State Technology...
• DDR4A memory standard for synchronous dynamic random-access memory that succeeded DDR3. Double Data Rate 4 (DDR4)...
• DDR5A generation of synchronous dynamic random-access memory (SDRAM) technology used for main memory in...
• DeadlockA situation in a multiprocessing system where two or more processes are unable to proceed because each is...
• DebugTo identify, analyze, and remove errors, called bugs, from computer hardware or software. The process...
• DebuggerA computer program used by software developers to test and find errors in other programs. It allows the...
• DecryptionThe process of converting ciphertext, which is unreadable encrypted data, back into its original, readable...
• DefaultA preselected value or setting used by a computer program or system when no other choice is specified by the...
• Default programA specific application automatically assigned by an operating system to open a particular file type or handle...
• DefragmentTo reorganize data stored on a hard disk drive by consolidating fragmented files into contiguous blocks. This...
• DegaussTo remove or reduce the magnetic field of an object, typically to erase data from magnetic storage media or...
• DeleteTo remove data from a storage medium, making it inaccessible through normal file system operations. This...
• DelimiterA character or sequence of characters that marks the beginning or end of a data unit, such as a field...
• DenaryRelating to the base-10 numeral system, also known as the decimal system. This system uses ten distinct...
• Denial of serviceAn attack that aims to render a computer system or network resource inaccessible to its legitimate users...
• DeploymentThe process of making a software system or application available for use. This includes all the activities...
• DeprecatedDescribing a feature, method, or component in software that is still functional but has been superseded by...
• Design patternA reusable solution to a recurring problem in software design within a given context. It describes a general...
• Desk checkingA manual code review technique where a programmer mentally executes a program or algorithm, tracing its logic...
• DesktopThe primary graphical user interface (GUI) of an operating system, serving as a virtual workspace for users...
• Desktop computerA personal computer designed for stationary use at a single location, typically comprising a separate...
• Desktop publishingThe creation of documents using page layout software on a personal computer. This process combines text...
• Desktop softwareAn application program that runs locally on a personal computer, such as a desktop or laptop, and does not...
• DeveloperAn individual who writes, tests, and maintains computer software, also known as a software engineer or...
• DevOpsA set of practices that combines software development (Dev) and IT operations (Ops) to shorten the systems...
• DFSA distributed file system, which is a file system that allows multiple users on multiple machines to share...
• DHCPA standardized networking protocol that automates the assignment of IP addresses and other network...
• Dialog boxA small window that appears on a graphical user interface to display information or prompt the user for...
• Dial-upA method of internet access that establishes a connection over a standard telephone line. It converts digital...
• DigitalRelating to information represented by discrete values, typically binary digits (bits) of 0s and 1s. This...
• Digital assetAny item of text or media that has been formatted into a binary source and includes the right to use it...
• Digital cameraAn optical device that captures still images or video electronically by converting light into digital data...
• Digital footprintThe trail of data that a person creates while using the Internet. This includes websites visited, emails...
• Digital forensicsThe application of scientific investigation techniques to recover, analyze, and preserve evidence from...
• Digital signatureA mathematical scheme for verifying the authenticity and integrity of digital messages or documents. It...
• DigitizeTo convert analog information, such as images, sounds, or documents, into a digital format that a computer...
• DIMMA Dual In-line Memory Module, a circuit board containing dynamic random-access memory (DRAM) integrated...
• DiodeA two-terminal electronic component that conducts current primarily in one direction, exhibiting low...
• Direct digital marketingA form of marketing that communicates directly with target customers through digital channels to promote...
• Direct3DA graphics application programming interface (API) that is part of Microsoft DirectX, used for rendering...
• DirectoryA file system object that contains references to other files and directories, organizing data hierarchically...
• DirectXA collection of application programming interfaces (APIs) developed by Microsoft for handling multimedia...
• Disk driveA hardware component that reads and writes data to a storage medium, such as a hard disk drive (HDD) or...
• Disk imageA single file or storage device containing the complete contents and structure of a data storage medium, such...
• DisplayPortA digital display interface developed by a consortium of PC and chip manufacturers and standardized by the...
• DitheringA technique used in computer graphics to simulate a wider range of colors or shades than a display or output...
• DKIMAn email authentication method designed to detect forged sender addresses in emails, a technique often used...
• DLCDownloadable content, referring to additional material created for a video game and distributed digitally...
• DLLDynamic Link Library, a type of file in Microsoft Windows operating systems that contains code and data that...
• DMADirect Memory Access, a feature of computer systems that allows certain hardware subsystems to access main...
• DMZA perimeter network that protects an organization's internal local area network from untrusted external...
• DNSA hierarchical and decentralized naming system for computers, services, or any resource connected to the...
• DNS recordA mapping file that provides instructions to a DNS server about a domain. These records contain information...
• DNSSECA suite of Internet Engineering Task Force specifications for securing certain kinds of information provided...
• DockA graphical user interface element that provides a convenient way to launch applications and switch between...
• Docking stationA hardware accessory that provides a way to connect a portable computer, such as a laptop, to multiple...
• DocumentA self-contained collection of information, created and saved by a software application as a single unit...
• DOMA cross-platform and language-independent application programming interface for treating an HTML or XML...
• DomainA distinct group of computers, devices, or resources that share a common set of rules, policies, and...
• Domain nameA human-readable identifier for an internet resource, such as a website or email server, that corresponds to...
• Domain suffixThe last part of a domain name, following the final dot, which indicates the top-level domain (TLD). This...
• DonationwareA software licensing model where the program is fully functional and may be freely copied and distributed...
• DongleA small hardware device that plugs into a computer or other electronic device to add functionality or provide...
• DOSDisk Operating System, a family of operating systems that ran from the early 1980s until the mid-1990s...
• Dot matrixA printing technology that creates images and text by striking an ink-soaked ribbon with a print head...
• Dot pitchThe distance between the centers of two adjacent pixels of the same color on a display screen. A smaller dot...
• Double-clickTo rapidly press and release a mouse button twice in quick succession without moving the mouse. This action...
• DownloadTo transfer a copy of a file or data from a remote computer system, such as a server or another client, to a...
• DowntimeA period during which a computer system, network, or service is non-operational and unavailable to its users...
• DPIA measure of spatial printing or video dot density, specifically the number of individual dots that can be...
• DragAn interaction method in graphical user interfaces where a user selects an object and moves it across the...
• Drag and dropA graphical user interface (GUI) action where a user selects a virtual object by clicking and holding down a...
• DRAMA type of random-access memory that holds each bit of data within a separate integrated circuit capacitor...
• DriveA data storage device used for storing and retrieving digital information. Drives can be internal components...
• Drive-by downloadThe unintentional download of malicious software onto a computer or mobile device without the user's explicit...
• DriverA computer program that operates or controls a particular type of device attached to a computer. It provides...
• DRMA set of access control technologies for restricting the use, modification, and distribution of copyrighted...
• Dropdown menuA graphical user interface control element that, when activated, displays a list of options from which a user...
• DSLDigital Subscriber Line, a family of technologies that provide internet access by transmitting digital data...
• DSLAMDigital Subscriber Line Access Multiplexer, a network device located at a telephone company's central office...
• DTDA set of markup declarations that define the structure and legal elements and attributes for an XML...
• Dual bootA configuration where two different operating systems are installed on the same computer, allowing the user...
• Dual processorA computer system configuration that incorporates two central processing units (CPUs) on a single...
• Dual-coreA central processing unit (CPU) that contains two independent processing units, or cores, on a single...
• DUTDevice Under Test, a term used in manufacturing and engineering to refer to a product or component that is...
• DVA digital video format introduced in 1995 for recording and playing back video on camcorders and VCRs. It...
• DVDA digital optical disc storage format, an abbreviation for Digital Versatile Disc or Digital Video Disc. It...
• DVD+RA recordable optical disc format that allows data to be written once and read many times. It is a write-once...
• DVD-RA recordable optical disc format that allows data to be written once and read many times. It is a write-once...
• DVD-RAMA rewritable optical disc format that allows data to be written, erased, and rewritten multiple times...
• DVD+RWA rewritable optical disc format that allows data to be written, erased, and rewritten multiple times. It is...
• DVD-RWA rewritable optical disc format that allows data to be written, erased, and rewritten multiple times. It is...
• DVIDigital Visual Interface, a video display interface developed to maximize the visual quality of digital...
• Dvorak keyboardAn alternative keyboard layout designed to enhance typing efficiency and reduce finger movement compared to...
• DVRDigital Video Recorder, an electronic device that records video in a digital format to a disk drive, USB...
• Dynamic websiteA website whose content is generated in real-time based on user interactions, database queries, or other...

114 of 1,553 terms in Computing and IT terminology (MLC-0101). Request the full dataset.