Bedienungsanleitung Dell XPS M1210 (Seite 184 von 192) (Englisch)

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184 Glossary

RFI — radio frequency interference — Interference that

is generated at typical radio frequencies, in the range of

10 kHz to 100,000 MHz. Radio frequencies are at the

lower end of the electromagnetic frequency spectrum and

are more likely to have interference than the higher

frequency radiations, such as infrared and light.

ROM — read-only memory — Memory that stores data

and programs that cannot be deleted or written to by the

computer. ROM, unlike RAM, retains its contents after

you shut down your computer. Some programs essential to

the operation of your computer reside in ROM.

RPM — revolutions per minute — The number of

rotations that occur per minute. Hard drive speed is often

measured in rpm.

RTC — real time clock — Battery-powered clock on the

system board that keeps the date and time after you shut

down the computer.

RTCRST — real-time clock reset — A jumper on the

system board of some computers that can often be used

for troubleshooting problems.

SAS — serial attached SCSI — A faster, serial version of

the SCSI interface (as opposed to the original SCSI

parallel architecture).

SATA — serial ATA — A faster, serial version of the ATA

(IDE) interface.

ScanDisk — A Microsoft utility that checks files, folders,

and the hard disk’s surface for errors. ScanDisk often runs

when you restart the computer after it has stopped

responding.

SCSI — small computer system interface — A high-speed

interface used to connect devices to a computer, such as

hard drives, CD drives, printers, and scanners. The SCSI

can connect many devices using a single controller. Each

device is accessed by an individual identification number

on the SCSI controller bus.

SDRAM — synchronous dynamic random-access memory

— A type of DRAM that is synchronized with the optimal

clock speed of the processor.

serial connector — An I/O port often used to connect

devices such as a handheld digital device or digital camera

to your computer.

Service Tag — A bar code label on your computer that

identifies your computer when you access Dell Support at

support.dell.com or when you call Dell for customer

service or technical support.

setup program — A program that is used to install and

configure hardware and software. The setup.exe or

install.exe program comes with most Windows software

packages. Setup program differs from system setup.

shortcut — An icon that provides quick access to

frequently used programs, files, folders, and drives. When

you place a shortcut on your Windows desktop and

double-click the icon, you can open its corresponding

folder or file without having to find it first. Shortcut icons

do not change the location of files. If you delete a

shortcut, the original file is not affected. Also, you can

rename a shortcut icon.

SIM — Subscriber Identity Module — A SIM card

contains a microchip that encrypts voice and data

transmissions. SIM cards can be used in phones or

portable computers.

smart card — A card that is embedded with a processor and

a memory chip. Smart cards can be used to authenticate a

user on computers equipped for smart cards.

S/PDIF — Sony/Philips Digital Interface — An audio

transfer file format that allows the transfer of audio from

one file to another without converting it to and from an

analog format, which could degrade the quality of the file.

standby mode — A power management mode that shuts

down all unnecessary computer operations to save energy.

Strike Zone™ — Reinforced area of the platform base

that protects the hard drive by acting as a dampening

device when a computer experiences resonating shock or

is dropped (whether the computer is on or off).

surge protectors — Prevent voltage spikes, such as those

that may occur during an electrical storm, from entering

the computer through the electrical outlet. Surge

protectors do not protect against lightning strikes or against

brownouts, which occur when the voltage drops more than

20 percent below the normal AC-line voltage level.

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