Dell Latitude D620 User Manual page 162

Glossary: Dell Latitude D620 User's Guide
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 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 as two logical processors, capable of
performing certain tasks simultaneously.
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).
I
IC integrated circuit A semiconductor wafer, or chip, on which thousands or millions of tiny electronic
components are fabricated for use in computer, audio, and video equipment.
IDE integrated device electronics An interface for mass storage devices in which the controller is
integrated into the hard drive or CD drive.
IEEE 1394 Institute of Electrical and Electronics Engineers, Inc. A high-performance serial bus used
to connect IEEE 1394-compatible devices, such as digital cameras and DVD players, to the computer.
infrared sensor A port that allows you to transfer data between the computer and infrared-
compatible devices without using a cable connection.
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