NEC express5800 A2010b User Manual page 100

Using a computer extensively may affect different parts of your body. Here are tips you should follow while working
on a computer to minimize strain on your body.
Keep proper posture
The basic body position for using a computer is sitting straight with
your hands on the keyboard parallel with the floor, and your eyes
directed slightly downward toward the monitor. With the proper
posture described above, no unnecessary strain is applied on any
part of your body, in other words when your muscles are most
relaxed.
Working on the computer with bad posture such as hunching over
or being too close to the monitor could cause fatigue or deteriorated
eyesight.
Adjust the angle of your display
Most display units are designed for adjustment of the horizontal and
vertical angles. This adjustment is important to prevent the screen
from reflecting bright lights and to make the display contents easy
to see. Working without adjusting the display to a comfortable angle
makes it difficult for you to maintain a proper posture and you will
get tired easily. Adjust the viewing angle before use.
Adjust the brightness and contrast of the display
Display screens have functions to control brightness and contrast.
The most suitable brightness/contrast depends on age, individuals,
and environment, so adjust it to suit your preferences. A too bright
or too dark display is bad for your eyes.
Adjust the angle of keyboard
Some keyboards are ergonomically designed, which allow the
angle to be adjusted. Adjusting the angle of the keyboard is
effective to reduce tension on your shoulders, arms, and fingers.
Clean your equipment
Keeping your equipment clean is important not only for the appearance but also for functional and safety reasons. A
dusty monitor makes it difficult to see the display contents, so clean it regularly.
Take rest breaks
When you feel tired, take a break. Light exercise is also
recommended.
Express5800/A1040b, A2040b, A2020b, A2010b User's Guide
100
Tips for your health and safety
Precautions for Use (Be Sure to Read)