@Xi Computer Corporation MTower, Руководство пользователя

Страница: 77 / 118

Xi® MTower™ - NTower™ - NetRAIDer™
Page 69
temperature. If, after you take these steps, the keyboard doesn't work, take it to a
qualified service provider for repair.
If you spill liquid that is greasy, sweet, or sticky, unplug the keyboard and take it to
a qualified service provider for repair.
Pointing Devices
Although most of the attention about hand and arm strain focuses keyboards, you
should not forget your pointing device: a mouse or a
trackball . Each major
category of pointing device has its own legion of supporters. Choose the device
that feels comfortable to you and that works for the type of job you do.
The mouse should roll easily, but not so fast that it is hard to control the pointer.
Using a mouse pad provides the necessary level of friction for easy control.
If you use the mouse with your right hand and find that you are experiencing
noticeable fatigue, you are probably holding the mouse too tightly with your
thumb and little finger. You should loosen your grip as much as possible. Also
consider changing your grip so that you hold the mouse with your thumb and
middle finger on your right hand. Another possibility is to switch the mouse to the
left side of the keyboard and use it with your left hand. (You should not reprogram
the mouse buttons if you use it with your left hand as doing so will defeat the
positive effect of the switch. Mouse button 1 should remain on the left side.)
When shopping for a trackball, consider how resistant the ball is to movement. If
the ball moves too easily or not easily enough, you'll have to work harder to
control it by using the small muscles in your hands and fingers, which are more
prone to injury.
Monitor
Your monitor is another component that plays an important role in the process of
using your computer. Your monitor should be high enough (or you should be low
enough) so that your eyes are level with the top edge of the screen's image.
Additionally, the monitor should be able to swivel so you can get rid of annoying
glare and reflections. Sit at least 2 feet away from your monitor. Try to eliminate
all sources of the reflections from your monitor screen. Position the monitor away
from bright light to reduce the amount of light reflected from the monitor. To
reduce glare, overhead light should radiate from 50° to 90° directly over your
monitor. Baffle light from other sources.