Samsung M6000 Laptop User Manual


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SamsungM6000User’sManual Glossary105
copieswithoutaccessingthedisk.This,inturn,speedsupthe
performanceoftheapplication.
AcacheisabufferfortransferringdisksectorsinandoutofRAM.
Datastoredinadiskcacheisacopyofdataalreadystoredonthe
physicaldisk.
DMA(directmemoryaccess)
Amethodoftransferringdatafromadevicetomemorywithout
havingthedatapassthroughthemicroprocessor.UsingDMAcan
speedupsystemperformance.
Floppydisk
Aremovabledisk,alsocalledfloppyordiskette.
Harddrive
Alsocalledfixeddisk.Aharddriveisconnectedtothecomputer
andcanbeinstalledorremoved.Datawrittentoaharddrive
remainsuntilitisoverwrittenorcorrupted.
The2.5-inchharddriveinyourcomputerwasdesignedforusein
aportablecomputer.Becauseharddrivesinportablecomputers
aresmallerthanthoseindesktopcomputers,theirmaximum
storagecapacitymaybelessthanthatofdesktopharddrives.
However,becauseoftheirsmallersize,thedriveshandleshock
andvibrationbetterthanlargerdrives,whichisimportantfora
portablecomputer.
I/O
Input/output.Referstoperipheraldevices,suchasprinters,thatare
addressedthroughanI/Oaddress.
I/Oaddress
I/Ostandsforinput/output.Peripheraldevices,suchasprinters,
areaddressedthroughtheI/Oportaddress.
IRQ(interruptrequestline)
TheIRQisahardwarelinethatadeviceusestosignalthe
microprocessorwhenthedeviceneedsthemicroprocessor’s
services.ThenumberofIRQsislimitedbyindustrystandards.
LCD(liquid-crystaldisplay)
TheLCDscreenonyourcomputerdiffersfromthedisplayscreen
ofadesktopmonitor.MostdesktopmonitorsuseCRT(cathode-
raytube)displays,whichworkbymovinganelectronbeamacross
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