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Glossary
Device
A general term for peripheral equipment connected to the computer, such as a keyboard or
external hard disk. The term “Device” also refers to components built into the computer itself,
such as the hard disk drive, modem, or LAN.
Dithering
Displaying an intermediate color tone by combining several colors. For example, one form of
dithering is to create a gray image by lining up alternating black and white pixels.
Double Click
Pressing and releasing the mouse button or touch pad twice in quick succession to display data
or execute a program or menu. The right mouse button is used to execute a double click.
Drag
The mouse button is held down while the mouse is moved to select regions, or to move
selected icons or windows. In the case of the touch pad, the drag operation can be executed
by moving the finger across the pad surface while the mouse button is depressed.
Driver
Software that provides the OS with information about a connected peripheral device (what type
of product it is, and how it should be operated), so that the OS can operate that device properly.
This software is also called a “device driver”. The drivers for some peripheral devices are
included in Windows, but when the driver is not included, it must be installed in order to use the
device.
DVD MULTI
A DVD drive capable of reading from DVD-ROM disks, and capable of reading from and writing
to DVD-RAM / DVD-RW / DVD-R for General disks.
DVD-R
A DVD on which data can be written only once. Data can also be added as long as the volume
is within the writing capacity of the disk. Offers higher compatibility with DVD-ROM than with
DVD-RW (
z
On this computer, data can be written using B’s Recorder.
DVD-RAM
– DVD-Random Access
Memory
A DVD that enables writing, erasing, and rewriting of data. Supported as a standard feature on
Windows XP. The type of disk most commonly used with DVD recorders, can be rewritten about
100,000 times.
DVD-ROM
– DVD-Read Only
Memory
A DVD that only enables data to be read. It enables recording of 7 to 25 times the volume of
data on a CD-ROM. Because of their large capacity, DVD-ROM disks are mainly used for
games or other applications that require large volumes of data, such as pictures and maps.
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