Dell PowerEdge 2500SC - Manual (Page 48)

PGA
Abbreviation for pin grid array, a type of microprocessor socket that allows you to remove the microprocessor chip.
pixel
A single point on a video display. Pixels are arranged in rows and columns to create an image. A video resolution, such as 640 x 480, is expressed as the number of
pixels across by the number of pixels up and down.
Plug and Play
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.
PQFP
Abbreviation for plastic quad flat pack, a type of microprocessor socket in which the microprocessor chip is permanently mounted.
Program Diskette Maker
The Program Diskette Maker allows you to create program diskette sets, or master copies, of software that Dell installed on your systemsystem. It is essential that you
create these diskette sets as soon as possible. You may need a set of master diskettes if you ever experience problems with your hard-disk drive and need to reinstall
your Dell-installed software. If your system includes Dell-installed software, you can select this program from the Dell Accessories program folder.
program diskette set
The set of diskettes from which you can perform a complete installation of an operating system or application program. When you reconfigure a program, you often
need its program diskette set.
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 micro--processor) to 4 GB (Intel386 or higher micro-processor)
l Multitasking
l Virtual memory, a method for increasing addressable memory by using the hard-disk drive
The Windows NT, OS/2, and UNIX® 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.
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.
RAMDAC
Acronym for 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