Dell PowerEdge 600SC - Manual (Page 30)

An industry-standard specification that makes it easier to add hardware devices to personal systems. Plug and Play provides automatic installation and
configuration, compatibility with existing hardware, and dynamic support of mobile computing environments.
POST
Acronym for power-on self-test. Before the operating system loads when you turn on your system, the POST tests various system components such as RAM,
the disk drives, and the keyboard.
ppm
Abbreviation for pages per minute.
protected mode
An operating mode supported by 80286 or higher microprocessors, protected mode allows operating systems to implement:
l A memory address space of 16 MB (80286 microprocessor) to 4 GB (Intel386™ or higher microprocessor)
l Multitasking
l Virtual memory, a method for increasing addressable memory by using the hard drive
Many 32-bit operating systems run in protected mode. MS-DOS cannot run in protected mode; however, some programs that you can start from MS-DOS, such
as the Windows operating system, are able to put the system into protected mode.
PS/2
Abbreviation for Personal System/2.
PXE
Acronym for preboot execution environment.
RAID
Acronym for redundant array of independent disks.
RAM
Acronym for random-access memory. The system's primary temporary storage area for program instructions and data. Each location in RAM is identified by a
number called a memory address. Any information stored in RAM is lost when you turn off your system.
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
Abbreviation for radio frequency interference.
RGB
Abbreviation for red/green/blue.
ROM
Acronym for read-only memory. Your system contains some programs essential to its operation in ROM code. Unlike RAM, a ROM chip retains its contents even
after you turn off your system. Examples of code in ROM include the program that initiates your system's boot routine and the POST.
rpm
Abbreviation for revolutions per minute.