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￿

Samsung￿M6000￿User’s￿Manual

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