| DAC | Stands for "Digital-to-Analog Converter" and is often pronounced "dac." Since... |
| Daemon | The word "daemon" actually comes from the Greek language, meaning an "inner or... |
| Dashboard | Dashboard is a user-interface feature Apple introduced with the release of Mac OS X... |
| Data | Computer data is information processed or stored by a computer. This information... |
| Data Management | Data management refers to the way individuals, companies, and organizations manage... |
| Data Transfer Rate | The data transfer rate is commonly used to measure how fast data is transferred... |
| Data Type | A data type is a type of data. Of course, that is rather circular definition, and... |
| Database | A database contains data stored in a structured format. It includes one or more... |
| DBMS | Stands for "Database Management System." In short, a DBMS is a database program... |
| DDL | DDL is short for "Data Definition Language." It is used to define the structure of... |
| DDR | Stands for "Double Data Rate." It is an advanced version of SDRAM, a type of... |
| DDR2 | Stands for "Double Data Rate 2." DDR2 RAM is an improved version of DDR memory... |
| Debug | Computer programmers, like everybody else, are not perfect. This means the... |
| Debugger | Even the most experienced software programmers usually don't get it right on their... |
| Default | This term is used to describe a preset value for some option in a computer program... |
| Defragment | Defragmenting your hard disk is a great way to boost the performance of your... |
| Degauss | Ever wonder what that "degauss" button on your monitor does besides make a buzzing... |
| Del.icio.us | Del.icio.us, pronounced simply "delicious," is a community bookmarking website in... |
| Delete | Delete is computer terminology for remove or erase. You can delete text from a... |
| Desktop | Your computer's desktop is much like a physical desktop. You probably keep a... |
| Desktop Publishing | When documents and images are printed, they are "published." Before computers... |
| DHCP | Stands for "Dynamic Host Configuration Protocol." A network server uses this... |
| Dial-up | A dial-up connection uses a modem to connect to an ISP or another computer. It... |
| Dialog Box | As the name implies, a dialog box serves to initiate a dialog with the user. It is... |
| Digital | Digital information is stored using a series of ones and zeros. Computers are... |
| Digital Camera | A digital camera is an electronic device that captures images in a digital format... |
| Digital Signature | A digital signature is a block of data that can be attached to documents such as... |
| Digitize | When you "digitize" something, you convert it from analog to digital. For example... |
| DIMM | Stands for "Dual In-Line Memory Module." It is a type of computer memory. A DIMM... |
| Direct Digital Marketing | Direct Digital Marketing, or DDM, is a type of marketing that is done through a... |
| Direct3D | Direct3D is an application program interface (API) developed by Microsoft that... |
| Directory | A directory is another name for a folder. Files on your hard disk are organized... |
| DirectX | DirectX is a set of standard commands and functions that software developers can... |
| Disk Image | A disk image is a software copy of a physical disk. It saves the entire data from... |
| DLL | Stands for "Dynamic Link Library." A DLL (.dll) file contains a library of... |
| DMA | Stands for "Direct Memory Access." DMA is a method of transferring data from the... |
| DNS | Stands for "Domain Name System." The primary purpose of DNS is to keep Web surfers... |
| DNS Record | DNS records are stored in zone files and are used for translating domain names to... |
| Dock | The Dock is a feature of the Mac OS X Finder that provides quick access to... |
| Domain | While the term "domain" is often used synonymously with "domain name," it also has... |
| Domain Name | This is the name that identifies an Web site. For example, "microsoft.com" is the... |
| Domain Suffix | A domain suffix is the last part of a domain name and is often referred to as a... |
| Dongle | This funny-sounding computer term has two widely different definitions that are... |
| DOS | Stands for "Disk Operating System." DOS was the first operating system used by... |
| Dot Matrix | A dot matrix is a 2D matrix of dots that can represent images, symbols, or... |
| Dot Pitch | This is the measurement used to determine how sharp the display of a CRT (Cathode... |
| Double Click | Double clicking involves clicking your mouse button quickly two times. To perform... |
| Download | This is the process in which data is sent to your computer. Whenever you receive... |
| DPI | Stands for "Dots Per Inch." DPI is used to measure the resolution of an image both... |
| Drag | You can use your mouse to drag icons and other objects on your computer screen... |
| DRAM | Stands for "Dynamic Random Access Memory." DRAM is a type of RAM that stores each... |
| Driver | This term usually refers to the person behind the wheel of a moving car. In the... |
| DRM | Stands for "Digital Rights Management." DRM refers to a collection of systems used... |
| DSL | Stands for "Digital Subscriber Line." It is medium for transferring data over... |
| DSLAM | Stands for "Digital Subscriber Line Access Multiplexer." A DSLAM is a device used... |
| DTD | Stands for "Document Type Definition." A DTD defines the tags and attributes used... |
| Dual-Core | A dual-core processor is a CPU with two processors or "execution cores" in the same... |
| DV | Stands for "Digital Video." Unlike traditional analog video, which is captured... |
| DVD | Stands for "Digital Versatile Disc." It can also stand for "Digital Video Disc... |
| DVD+R | Stands for "Digital Versatile Disc Recordable." DVD+R discs look the same as... |
| DVD+RW | Stands for "Digital Versatile Disk Rewritable." A DVD+RW is like a DVD+R, but can... |
| DVD-R | Stands for "Digital Versatile Disc Recordable." A DVD-R looks the same as a... |
| DVD-RAM | Stands for "Digital Versatile Disc Random Access Memory." DVD-RAMs are writable... |
| DVD-RW | Stands for "Digital Versatile Disk Rewritable." A DVD-RW is like a DVD-R but can... |
| DVI | Stands for "Digital Video Interface." DVI is a video connection standard created... |
| DVR | Stands for "Digital Video Recorder." A DVR is basically a VCR that uses a hard... |
| Dynamic Website | A dynamic website contains Web pages that are generated dynamically. Each time a... |
