Instruction Manual

q Place the keyboard onaflat surface at acomfortable height and distance. You should be able
totype without twisting your torso or neck, and look at the screen without slouching.
q The top of the display should be no higher than eye level.
q If you use apaper holder, set it at about the same height and distance as the screen.
Seating and posture
When using the computer, maintain good posture with your body relaxed and your weight
distributed evenly. Proper seating is aprimary factor in reducing work strain. Some people find
abackless chair more comfortable than aconventional chair. Whichever type you choose, use the
following guidelines toadjust your chair for maximum computing comfort.
Correct posture
and positioning
of the computer
q Position your chair so that the keyboard is at or slightly below the level of your elbow. You
should be able totype comfortably with your shoulders relaxed and your forearms parallel
tothe floor.
If you are using aconventional chair:
q Your knees should be slightly higher than your hips. If necessary, use afootrest toraise the
level of your knees and ease the pressure onthe back of your thighs.
q Adjust the back of your chair so that it supports the lower curve of your spine. If necessary,
use acushion toprovide extra back support. Lower- back- support cushions are available at
many office supply stores.
q Sit with your back straight so that your knees, hips, and elbows form approximately
90-degree angles when you work. Donot slump forward or lean back too far.
Lighting
Proper lighting can improve the visibility of the display and reduce eyestrain.
q Position the monitor so that sunlight or bright indoor lighting does not reflect off the screen.
Use tinted windows or shades toreduce glare.
q Avoid placing the monitor in front of abright light that could shine directly in your eyes.
q If possible, use soft, indirect lighting in the computer work area.
Arms and wrists
To protect your arms and wrists:
q Avoid bending, arching, or twisting your wrists. Keep them in arelaxed, neutral position
while typing.
q Exercise your hands, wrists, and arms toimprove circulation.
Work habits
The key toavoiding discomfort or injury from strain is tovary your activities. If possible,
schedule avariety of tasks into your working day. Finding ways tobreak up the routine can
reduce stress and improve your efficiency. Some ways toimprove your work situation are: