Évaluations - 3, GPA: 4 ( )

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direct current (DC) — The type of power usually supplied by batteries. DC flows in one direction. Compare alternating current (AC). Glossary Glossary direct memory access (DMA) — A dedicated channel, bypassing the CPU, that enables direct data transfer between memory and a device. directory — See folder. disable — To turn a computer option off. See also enable. disc — A round, flat piece of metal, designed to be read from and written to by optical (laser) technology, and used in the production of optical discs, such as CDs and DVDs. Compare disk. disk — A round, flat piece of material that can be magnetically influenced to hold information in digital form, and used in the production of magnetic disks, such as diskettes and hard disks. Compare disc. See also diskette, hard disk. disk drive — The device that reads and writes information and programs on a diskette or hard disk. It rotates the disk at high speed past one or more read/write heads. diskette — A thin, flexible disk in a protective jacket that stores magnetically encoded data. Diskettes can be removed from the computer. Your computer uses 3.5-inch diskettes. document — Any file created with an application and, if saved to disk, given a name by which it can be retrieved. See also file. double-click — To press the control button or mouse button rapidly twice without moving the pointing device. In the Windows® operating system, this refers to the primary control button or left mouse button, unless otherwise stated. download — (1) In communications, to receive a file from another computer through a modem or network. (2) To send font data from the computer to a printer. See also upload. drag — To hold down the control button or mouse button while moving the cursor to drag a selected object. In the Windows® operating system, this refers to the primary control button or left mouse button, unless otherwise stated. driver — See device driver. Glossary Glossary DVD — An individual digital versatile (or video) disc. See also DVD-ROM. DVD-ROM (digital versatile disc read-only memory) — A very high-capacity storage medium that uses laser optics for reading data. Each DVD-ROM can hold as much data as several CD- ROMs. Compare CD-ROM. emulation — A technique in which a device or program imitates E another device or program. enable — To turn on a computer option. See also disable. executable file — A computer program that is ready to run. Application programs and batch files are examples of executable files. Names of executable files usually end with a .bat or .exe extension. expansion device — A device that connects to a computer to expand its capabilities. Other names for an expansion device are port expander, port replicator, docking station, or network adapter. extension — See file extension. external device — See device. file — A collection of related information, saved on disk with a F unique name. A file may be a program, information used by a program, or a document. See also document. file a...

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