DELL D600 用户手册

The ability of the computer to automatically configure devices. Plug and Play provides automatic installation, configuration, and compatibility 

with existing hardware if the BIOS, operating system, and all devices are Plug and Play compliant. 

 

 

power-on self-test — Diagnostics programs, loaded automatically by the BIOS, that perform basic tests on the major computer components, such as 

memory, hard drives, and video. If no problems are detected during POST, the computer continues the start-up.  

 

 

Any software that processes data for you, including spreadsheet, word processor, database, and game packages. Programs require an operating 

system to run. 

 

 

personal system/2 — A type of connector for attaching a PS/2-compatible keyboard, mouse, or keypad. 

 

 

pre-boot execution environment — A WfM (Wired for Management) standard that allows networked computers that do not have an operating system to 

be configured and started remotely. 

 

 

redundant array of independent disks — A system of two or more drives working together for performance and fault tolerance. RAID drives are 

typically used on servers and high-end PCs. 

The three most common RAID levels are 0, 3, and 5:

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Level 0: Provides data striping but no redundancy. Level 0 improves performance but does not provide fault tolerance. 

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Level 3: Same as Level 0, but also reserves one dedicated drive for error correction data, providing good performance and some level of fault 

tolerance. 

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Level 5: Provides data striping at the byte level and also stripe error correction information, resulting in excellent performance and good fault 

tolerance. 

 

 

random-access memory — The primary temporary storage area for program instructions and data. Any information stored in RAM is lost when you shut 

down your computer. 

 

 

A text file included with a software package or hardware product. Typically, readme files provide installation information and describe new 

product enhancements or corrections that have not yet been documented. 

 

 

Data and/or files you can view but cannot edit or delete. A file can have read-only status if: 

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It resides on a physically write-protected floppy disk, CD, or DVD. 

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It is located on a network in a directory and the system administrator has assigned rights only to specific individuals. 

 

 

The frequency, measured in Hz, at which your 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 sharpness and clarity of an image produced by a printer or displayed on a monitor. The higher the resolution, the sharper the image. 

 

 

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. 

 

 

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. 

 

 

revolutions per minute — The number of rotations that occur per minute. Hard drive speed is often measured in rpm. 

 

 

real time clock — Battery-powered clock on the system board that keeps the date and time after you shut down the computer.