Visual output.
WHAT DETERMINES DISPLAY QUALITY
Resolution: the number of pixels
Size, and therefore pixel density Panel type, affecting colour and viewing angle Refresh rate
WHAT GRAPHICS PROCESSING DOES
Generates what appears on screen.
WHERE IT IS
Integrated into the processor, in most machines A separate card, where more capability is needed
WHAT NEEDS A SEPARATE CARD
Design and video work Three-dimensional work Certain computational tasks
WHAT DOES NOT
Ordinary office work and browsing.
WHAT AFFECTS HOW MANY DISPLAYS ARE SUPPORTED
The graphics capability and available outputs.
WHAT TO CHECK BEFORE ADDING A DISPLAY
Which outputs exist, and what the display accepts Whether an adapter is required Whether the machine supports the number wanted
WHAT CAUSES COMMON DISPLAY PROBLEMS
Wrong input selected Cable or adapter fault Resolution set beyond what the display supports Driver problems
WHAT TO TRY FIRST
A different cable and a different port.
