Dell Precision 490 Desktop User's Guide - Page 109
A DIMM with DDR2 DRAM chips and an Advanced Memory Buffer AMB that speeds communication between - pc
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DVD+RW drive - a drive that can read DVDs and most CD media and write to DVD+RW (rewritable DVDs) discs. DVI - digital video interface - A standard for digital transmission between a computer and a digital video display. E ECC - error checking and correction - A type of memory that includes special circuitry for testing the accuracy of data as it passes in and out of memory. ECP - extended capabilities port - A parallel connector design that provides improved bidirectional data transmission. Similar to EPP, ECP uses direct memory access to transfer data and often improves performance. EIDE - enhanced integrated device electronics - An improved version of the IDE interface for hard drives and CD drives. EMI - electromagnetic interference - Electrical interference caused by electromagnetic radiation. ENERGY STAR® - Environmental Protection Agency requirements that decrease the overall consumption of electricity. EPP - enhanced parallel port - A parallel connector design that provides bidirectional data transmission. ESD - electrostatic discharge - A rapid discharge of static electricity. ESD can damage integrated circuits found in computer and communications equipment. expansion card - A circuit board that installs in an expansion slot on the system board in some computers, expanding the capabilities of the computer. Examples include video, modem, and sound cards. expansion slot - A connector on the system board (in some computers) where you insert an expansion card, connecting it to the system bus. ExpressCard - A removable I/O card adhering to the PCMCIA standard. Modems and network adapters are common types of ExpressCards. ExpressCards support both the PCI Express and USB 2.0 standard. Express Service Code - A numeric code located on a sticker on your Dell™ computer. Use the Express Service Code when contacting Dell for assistance. Express Service Code service may not be available in some countries. extended display mode - A display setting that allows you to use a second monitor as an extension of your display. Also referred to as dual display mode. extended PC Card - A PC Card that extends beyond the edge of the PC Card slot when installed. F Fahrenheit - A temperature measurement scale where 32° is the freezing point and 212° is the boiling point of water. FBD - fully-buffered DIMM - A DIMM with DDR2 DRAM chips and an Advanced Memory Buffer (AMB) that speeds communication between the DDR2 SDRAM chips and the system. FCC - Federal Communications Commission - A U.S. agency responsible for enforcing communications-related regulations that state how much radiation computers and other electronic equipment can emit. floppy - An electromagnetic form of storage media. Also known as a floppy diskette or a floppy disk. floppy drive - A disk drive that can read and write to floppy disks. folder - A term used to describe space on a disk or drive where files are organized and grouped. Files in a folder can be viewed and ordered in various ways, such as alphabetically, by date, and by size. format - The process that prepares a drive or disk for file storage. When a drive or disk is formatted, the existing information on it is lost. FSB - front side bus - The data path and physical interface between the processor and RAM. FTP - file transfer protocol - A standard Internet protocol used to exchange files between computers connected to the Internet. G G - gravity - A measurement of weight and force. GB - gigabyte - A measurement of data storage that equals 1024 MB (1,073,741,824 bytes). When used to refer to hard drive storage, the term is often rounded to 1,000,000,000 bytes. GHz - gigahertz - A measurement of frequency that equals one thousand million Hz, or one thousand MHz. The speeds for computer processors, buses, and interfaces are often measured in GHz. graphics mode - A video mode that can be defined as x horizontal pixels by y vertical pixels by z colors. Graphics modes can display an unlimited variety of shapes and fonts. GUI - graphical user interface - Software that interacts with the user by means of menus, windows, and icons. Most programs that operate on the Windows operating systems are GUIs.