Toshiba PTME1U05202U User Manual

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default — The setting selected by a program when the user does not 

specify an alternative setting.

device — A component attached to the computer. Devices may be 

external (outside the computer’s case) or internal (inside the 
computer’s case). Printers, disk drives, and modems are examples of 
devices.

device driver — A program (called a “driver”) that permits a computer 

to communicate with a device.

dialog box — An on-screen window displayed by the operating system 

or a program giving a direction or requesting input from the user.

Direct Current (DC) — The type of power usually supplied by 

batteries. DC flows in one direction. Compare Alternating Current 
(AC).

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 material, 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 hard disks. Compare disc. See 
also hard disk.

disk drive — The device that reads and writes information and programs 

on a hard disk. It rotates the disk at high speed past one or more 
read/write heads.

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 and release the pointing device’s primary 

button rapidly twice without moving the pointing device. In the 
Windows

® 

operating system, this refers to the pointing device’s left 

button, unless otherwise stated.