Dell PowerEdge 4400 Manuel d'utilisateur télécharger pdf (Page 15)

A chip or expansion card that controls the transfer of data between the microprocessor and a peripheral such as a diskette drive or the keyboard.  
conventional memory  
The first 640 KB of RAM. Unless they are specially designed, MS-DOS programs are limited to running in conventional memory. See also EMM, 
expanded memory, extended memory, HMA, memory manager, upper memory area, and XMM.  
coprocessor  
A coprocessor relieves the computer's microprocessor of specific processing tasks. A math coprocessor, for example, handles numeric 
processing. A graphics coprocessor handles video rendering. The Intel®Pentium®microprocessor includes an integrated math coprocessor.  
cpi  
Abbreviation for characters per inch.  
CPU  
Abbreviation for central processing unit. See also microprocessor.  
cursor  
In character-based MS-DOS programs, the cursor is usually a block or an underscore (possibly blinking) that represents the position at which the 
next character typed will appear. Windows programs can design their own cursors—common cursor symbols include the pointer arrow and the 
text-insertion I-beam.  
D  
DAC  
Acronym for digital-to-analog converter.  
DAT  
Acronym for digital audio tape.  
dB  
Abbreviation for decibel(s). 
dBA  
Abbreviation for adjusted decibel(s).  
DC  
Abbreviation for direct current.  
DDC  
Acronym for display data channel. A VESA®standard mechanism that allows the system to communicate with the monitor and retrieve information 
about its capabilities.  
device driver  
A device driver allows the operating system or a program to interface correctly with a peripheral such as a printer or network card. Some device 
drivers—such as network drivers—must be loaded from the config.sys file (with a device= statement) or as memory-resident programs (usually, 
from the autoexec.bat file). Others—such as video drivers—must load when you start the program for which they were designed.  
DHCP  
Acronym for Dynamic Host Configuration Protocol.  
diagnostics  
See diskette-based diagnostics.  
DIMM  
Acronym for dual in-line memory module.  
DIN  

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Dell PowerEdge 4400 Manuel d'utilisateur Page 15

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