Dell OptiPlex 745 User Manual

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Contents

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. ExpressCardssupport 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.FFahrenheit — 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 SDRAMchips and the system.FCC — Federal Communications Commission — A U.S. agency responsible for enforcing communications-related regulations that state how much radiationcomputers and other electronic equipment can emit.fingerprint reader — A strip sensor that uses your unique fingerprint to authenticate your user identity to help secure your computer.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.GG — 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 oftenrounded 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, andinterfaces 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 ofshapes 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 Windowsoperating systems are GUIs.Hhard drive — A drive that reads and writes data on a hard disk. The terms hard drive and hard disk are often used interchangeably.heat sink — A metal plate on some processors that helps dissipate heat.hibernate mode — A power management mode that saves everything in memory to a reserved space on the hard drive and then turns off the computer.When you restart the computer, the memory information that was saved to the hard drive is automatically restored.HTTP — hypertext transfer protocol — A protocol for exchanging files between computers connected to the Internet.Hyper-Threading — Hyper-Threading is an Intel technology that can enhance overall computer performance by allowing one physical processor to function astwo logical processors, capable of performing certain tasks simultaneously.