This usally one monitor in use with the computer. This results in restrictions of space that is abled to worked with on the computer screen.

A typlical 17” monitor

• Covers only about 10% of the visual field
• 1% of what can be seen by moving the head.

This forces the user to make context switches on new information that are explicit by placing a new window over another. Reducing the ability to make comparisons and expending mental resources on managing information on the screen.