IBM Ricoh FB750 - Manual (Page 55)

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Direct Color
Generic term for TrueColor, RealColor and HiColor. In these modes, the color information saved in the
display memory is not translated by a look-up table, but passed directly to the D/A converter. This means that
the full color information has to be saved for each pixel.
Display Adapter or Video Card
A card installed inside the computer (or integrated into the motherboard) that generates video signal to create,
with the monitor, a screen image. Most current display adapters are capable of displaying multiple
resolutions at varied bit-depth. The higher the screen resolution, the finer the detail. More colors will
provide images closer to picture quality. Monitors with a higher refresh rate will have a reduced flicker.
Dithering
Creating a special shade of color with a lot of near together grouped pixels of different colors. May be
necessary at low color depth (e.g. 256 colors).
DMA
Direct Memory Access. This is a method of data transfer, where information is transferred directly between
system components without the help of the CPU. Enhanced Centronics Ports use a DMA address as do most
sound cards and some other peripherals.
DPI or Dots Per Inch
The resolution of images on the computer or from the printer is measured in how many dots (or pixels) there
are in each inch of the image. The higher the DPI, the more precise the image can be. DPI also directly
affects the size of the image file: the higher the DPI, the bigger the file.
Drag and Drop
This is a Windows and Mac term that refers to moving icons or item around on the screen by using the mouse.
Point the mouse cursor at the desired item and click and hold down the left mouse button with your index
finger. While holding the mouse button down, move the mouse in the direction you want the item to go. The
item “drag” across the screen. When you have the item over the area you want to put it, release the mouse
button to “drop” it.
Driver Software
The driver allows software to communicate with hardware; it allows the computer to “drive” the device (such
as a scanner). The scanners will only work with the computer if there is driver software installed.
Dynamic Range
The extent of the range of brightness levels in an image.
ECP
Enhanced Centronics Port mode. This mode will allow the computer to send an advanced parallel port signal
to installed parallel port device(s). ECP uses a DMA channel to increase its communications abilities.
Email
Electronic mail, text messages sent through a network, such as the Internet, to a specified individual or group.
Email messages can carry attached files, such as word-processing documents or graphics. Email is sent and
received with special software called an email client: Eudora, MS-Exchange, etc. Some ISPs’ log on program
and many Web Browsers have email clients built into them.