Toshiba V1100 - Manual (Page 7)

Work Environment
3
Notice: This computer must always be used at a well designed work
station. The keyboard and mouse-pad must be located so that your arms,
shoulders and hands will always be in natural and comfortable positions
when you are using the computer. This will minimise any physical
discomfort to the back, neck, wrists and other parts of your body.
(During normal computer use, your forearms should be parallel to the
floor, your wrists should be arched comfortably upward (i.e., so that your
hands are above your forearms), your fingers should be gently curved
downward and your upper arms should be hanging freely at your side.
This will minimise physical discomfort.)
Furthermore, you must always be seated in front of the computer in a
comfortable chair that provides firm support for your back, and that
permits your feet to be flat on the floor, you knees to be bent at an angle
of 90 degrees or more and your thighs to be at an angle of 90 degrees
or greater in relation to your torso.
In addition, the work station must always be well-illuminated and the
CRT monitor must always be positioned and adjusted so that both the
viewing distance and the viewing angle will be comfortable in relation
to your seat location. (The CRT monitor has been provided with both
swivel and tilt adjustments, to facilitate optimum positioning.)
The following safety instructions must therefore always be followed, to
avoid the adverse consequences that could otherwise result from the
misuse of a Toshiba desktop PC in a poorly designed work station.
Prevention of Eyestrain
Viewing Distance From$ and Viewing Angie of$ the CRT
Monitor Screen
When using a Toshiba desktop PC, the operator is linked to the
equipment through the eyes as well as through the hands. Viewing
distance and viewing angle are two of the controllable factors which
significantly affect the ability of the eyes to focus easily on the CRT
monitor screen.
Viewing distances of less than 40 cm (16") can cause eye-strain and
headaches, both in persons with normal vision and in persons who must
wear corrective glasses or contact lenses. Consequently, viewing
distances of at least 40 cm (16") must be maintained. Closer viewing
distances will create stress both on the binocular (eye-aiming) system and
on the accommodating (eye-focusing) system.
Most persons also find it to be more restful on the eyes if the viewing
angle is adjusted so that the top line of the CRT monitor screen is located
20
degrees or more below eye-level, rather than straight ahead or
upward. In general, the closer the location of the CRT monitor screen,
the lower it should be placed.
User's Manual