Toshiba Satellite C55-C5241 Satellite/Satellite Pro C40/C50/C70-C Series Windo - Page 156

D, examples of devices.

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156 Glossary controller-A device that controls the transfer of data from a computer to a peripheral device and vice versa. For example, disk drives, monitors, keyboards, and printers all require controllers. CPU-See Central Processing Unit (CPU). CPU cache-A section of very fast memory residing between the CPU and the computer's main memory that temporarily stores data and instructions the CPU will need to execute commands and programs. See also cache, L1 cache, L2 cache. cursor-An on-screen symbol (usually a flashing vertical line) that indicates the position where characters will appear when you enter data. D Desktop-Offers the traditional look and feel of the Windows® desktop found in Windows® 7 and earlier releases of the Windows® operating system. 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.

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156
Glossary
controller
—A device that controls the transfer of data from a
computer to a peripheral device and vice versa. For
example, disk drives, monitors, keyboards, and printers all
require controllers.
CPU
—See
Central Processing Unit (CPU)
.
CPU cache
—A section of very fast memory residing between
the CPU and the computer’s main memory that temporarily
stores data and instructions the CPU will need to execute
commands and programs. See also
cache, L1 cache, L2
cache
.
cursor
—An on-screen symbol (usually a flashing vertical line)
that indicates the position where characters will appear
when you enter data.
D
Desktop
—Offers the traditional look and feel of the Windows
®
desktop found in Windows
®
7 and earlier releases of the
Windows
®
operating system.
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
.