Dell Precision 620 Manuel d'utilisateur télécharger pdf (Page 61)

A random-access memory architecture.

RAMDAC

random-access memory digital-to-analog converter

read-only file

A read-only file is one that you are prohibited from editing or deleting. A file can have read-only status if:

l Its read-only attribute is enabled.

l It resides on a physically write-protected diskette or on a diskette in a write-protected drive.

l It is located on a network in a directory to which the system administrator has assigned read-only rights to you.

readme file

A text file included with a software package or hardware product that contains information supplementing or updating the documentation for the

software or hardware. Typically, readme files provide installation information, describe new product enhancements or corrections that have not yet

been documented, and list known problems or other things you need to be aware of as you use the software or hardware.

real mode

An operating mode supported by 80286 or higher microprocessors, real mode imitates the architecture of an 8086 microprocessor.

refresh rate

The rate at which the monitor redraws the video image on the monitor screen. More precisely, the refresh rate is the frequency, measured in Hz, at

which the screen's horizontal lines are recharged (sometimes also referred to as its vertical frequency). The higher the refresh rate, the less video

flicker can be seen by the human eye. The higher refresh rates are also noninterlaced.

RFI

radio frequency interference

RGB

red/green/blue

RIMM

Rambus in-line memory module

ROM

read-only memory. Your computer contains some programs essential to its operation in ROM code. Unlike RAM, a ROM chip retains its contents

even after you turn off your computer. Examples of code in ROM include the program that initiates your computer's boot routine and the POST.

rpm

revolutions per minute

RTC

real-time clock. Battery-powered clock circuitry inside the computer that keeps the date and time after you turn off the computer.

sec

second(s)

SEC

single-edgecontact.NewerIntelprocessors,suchasthePentiumIIIXeon™processor,usethistypeofconnectorasaninterfacebetweenthe

processor and the system board.

serial port

An I/O port used most often to connect a modem to your computer. You can usually identify a serial port on your computer by its 9-pin connector.

service tag number

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Dell Precision 620 Manuel d'utilisateur Page 61