Dell OptiPlex SX270 User Manual page 62

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.
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.
NOTE: If your computer has two PC Card connectors, always install extended PC Cards in the top connector.
NOTICE: Always remove an extended PC Card before packing the computer or traveling. If something strikes the exposed end of the PC Card, the
system board may be damaged.
F
Fahrenheit — A temperature measurement system where 32° is the freezing point and 212° is the boiling point of water.
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 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 microprocessor 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 microprocessors, 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.
H
hard 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 microprocessors that helps dissipate heat.
help file — A file that contains descriptive or instructional information about a product. Some help files are associated with a particular program, such as Help in
Microsoft Word. Other help files function as stand-alone reference sources. Help files typically have a filename extension of .hlp or .chm.
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.
HTML — hypertext markup language — A set of codes inserted into an Internet web page intended for display on an Internet browser.
HTTP — hypertext transfer protocol — A protocol for exchanging files between computers connected to the Internet.
Hz — hertz — A unit of frequency measurement that equals 1 cycle per second. Computers and electronic devices are often measured in kilohertz (kHz),
megahertz (MHz), gigahertz (GHz), or terahertz (THz).