Dell Precision Workstation 450 User Manual page 318

304 Glossar y
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.
HT TP — hypertext transfer protocol — A protocol for exchanging files between
computers connected to the Internet.
H — hertz — A unit of frequency measurement that equals 1 cycle per second.
Z
Computers and electronic devices are often measured in kilohertz (kHz), megahertz
(MHz), gigahertz (GHz), or terahertz (THz).
I
IC — Industry Canada — The Canadian regulatory body responsible for regulating
emissions from electronic equipment, much as the FCC does in the United States.
IDE — integrated device electronics — An interface for mass storage devices in
which the controller is integrated into the hard drive or CD drive.
IEEE 13 94 — 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.
I — Usually refers to components that are physically located on the
N T E G R A T E D
computer's system board. Also referred to as built-in.
I/O — input/output — An operation or device that enters and extracts data from
your computer. Keyboards and printers are I/O devices.
I/O — An address in RAM that is associated with a specific device
A D D R E S S
(such as a serial connector, parallel connector, or expansion slot) and allows the
microprocessor to communicate with that device.
IRQ — interrupt request — An electronic pathway assigned to a specific device so
that the device can communicate with the microprocessor. Each device connection
must be assigned an IRQ. Although two devices can share the same IRQ assignment,
you cannot operate both devices simultaneously.
I SP — Internet service provider — A company that allows you to access its host
server to connect directly to the Internet, send and receive e-mail, and access
websites. The ISP typically provides you with a software package, user name, and
access phone numbers for a fee.
K
K — kilobit — A unit of data that equals 1024 bytes. A measurement of the
B
capacity of memory integrated circuits.
KB — kilobyte — A unit of data that equals 1024 bits but is often referred to as