NEC Express5800 series User Manual page 12

USERS_GUIDE_1080XD_topsheet1
Computer operation for a long time may affect your health. When using a computer, follow
the tips below to avoid stress and maintain your health.
Correct posture
The correct posture of an operator for computer operation is sitting in a chair while
maintaining an upright posture. The keyboard should be placed so that your hands are parallel
with the floor. The screen should be slightly lower than your line of vision. The correct
posture is one that does not place stress on your body, and where your muscles are not
contracting excessively.
The incorrect posture is where you are hunched over or hitting the keyboard with your face
close to the monitor. This posture may cause fatigue or eyesight problems.
Display angle adjustment
Most displays can be adjusted left/right and up/down. It is important to change the display
angle to avoid glaring direct light from lighting and to make the contents on the screen
clearer. Computer operation with incorrect posture without proper angle adjustment, results in
operator fatigue starting sooner. Adjust the display angle before operating.
Adjusting screen brightness and contrast
It is possible for a display to change its brightness and contrast. The proper brightness and
contrast of the screen vary depending on the person, age, and surrounding lightness. Adjust
your screen according to your situation. Excessively light or dark screens may adversely
affect your eyes.
Adjusting keyboard angle
Some keyboards have an angle adjustment design. Changing the keyboard angle to make you
comfortable with keyboard operation is very effective in reducing stress on your shoulders,
arms, and fingers. Cleaning peripheral devices and cleaners is also important from the
viewpoint of functions and safety as well as aesthetics. Monitors typically collect dust. As a
dirty monitor screen makes visibility lower, it is necessary to periodically clean the monitor.
Taking a break when tired
Taking a break and doing light exercise for relaxation is recommended.
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Tips for Health Care