Dell Latitude D620 User Manual page 163

Glossary: Dell Latitude D620 User's Guide
integrated Usually refers to components that are physically located on the 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 address An address in RAM that is associated with a specific device (such as a serial connector,
parallel connector, or expansion slot) and allows the processor to communicate with that device.
IrDA Infrared Data Association The organization that creates international standards for infrared
communications.
IRQ interrupt request An electronic pathway assigned to a specific device so that the device can
communicate with the processor. Each device connection must be assigned an IRQ. Although two
devices can share the same IRQ assignment, you cannot operate both devices simultaneously.
ISP 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
Kb kilobit A unit of data that equals 1024 bits. A measurement of the capacity of memory integrated
circuits.
KB kilobyte A unit of data that equals 1024 bytes but is often referred to as 1000 bytes.
key combination A command requiring you to press multiple keys at the same time.
kHz kilohertz A measurement of frequency that equals 1000 Hz.
L
LAN local area network A computer network covering a small area. A LAN usually is confined to a
building or a few nearby buildings. A LAN can be connected to another LAN over any distance through
telephone lines and radio waves to form a wide area network (WAN).
LCD liquid crystal display The technology used by portable computer and flat-panel displays.
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