Specifications

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To achieve the benefits of human factors
in product design, the systems integrator
must realize that the full potential and
advantages of touch input require attention
to many interrelated considerations. Such
considerations are mechanical and physical
attributes, and programming considerations.
Mechanical Considerations
Display Selection
Selecting the computer display is one of
the major decisions affecting the cost of the
complete touch system. Today, the display
choices include both flat panels and CRTs.
Flat panel displays tend to present the fewest
mechanical design concerns for touch
systems, while CRTs typically require some
degree of mechanical design compensation
to correct for the curvature of the display
surface. As a general rule, touch
applications that require a large number of
targets on a single screen should move to a
larger display size.
Touch System Integration
Touch system designers must choose
which type of integration best suits their
applications, invasive or noninvasive. An
invasive integration typically requires that
the display be disassembled. This is very
time consuming and may void factory
warranties of the display. Noninvasive
integrations require very little time to
assemble and will not affect manufacturers’
warranties. Maintenance is simplified as
well.
Section 6. Touch Products Design