ATI Technologies FIRE GL1 User's Guide download pdf (Page 53)

Glossary

Palette

Selection of colors from which to choose. Your board provides as many as 16.7

million simultaneous colors from a palette of 16.7 million. This capability is

sometimes referred to as TrueColor. It is believed that the human eye can discern

no more than 16.7 million colors.

PCI bus

Peripheral Component Interconnect bus - system of parallel data lines to transfer

information between individual system components, especially to expansion boards.

Peripheral Equipment

Auxiliary equipment connected to a computer (e.g. monitor, printer, keyboard, etc.).

Pipelining

Commands from the graphics board to the system memory are queued up and

therefore, all of the available bandwidth on AGP is used.

Pixel

Short for picture element; the smallest field displayed on the monitor; could be

compared to the dots which form images in photos printed in newspapers. Also

called pel.

Pixel clock

Also called pixel frequency. Number of pixels drawn per second in MHz (million

pixels per second). The values are either fixed or freely programmable.

Pixel depth

Also called color depth. Number of bits of color information per pixel. A system

using eight bits per pixel can display 256 colors. A system using 16 bits per pixel can

display 65,536 colors. A system using 24 bits per pixel can display over 16.7 million

colors. Twenty-four-bit color is often called true color because the human eye can

distinguish among approximately six million different colors, or fewer than are

available in a 24-bit color system. 24 bits means 8 bit for each RGB. With 32-bit pixel

depth 8 bits are used in addition for an Alpha Channel.

Polygon Fill

Special hardware (chip) routine used to fill polygons with pixel information.

Primary Display

Monitor which is active when you power on your system.

PS/2 Display Adapter

IBM VGA board for Industry Standard Architecture (AT bus) computers.

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ATI Technologies FIRE GL1 User's Guide Page 53