Bedienungsanleitung Dell XPS M1210 (Seite 181 von 192) (Englisch)

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Glossary 181

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).

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.

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.

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.

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.

LED — light-emitting diode — An electronic component

that emits light to indicate the status of the computer.

local bus — A data bus that provides a fast throughput for

devices to the processor.

LPT — line print terminal — The designation for a

parallel connection to a printer or other parallel device.

LVDS — low-voltage differential signaling

Mb — megabit — A measurement of memory chip

capacity that equals 1024 Kb.

Mbps — megabits per second — One million bits per

second. This measurement is typically used for

transmission speeds for networks and modems.

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