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Anti-Glare Resistive Touch Screens
for Industrial CRT and Flat Panel LCD Display Systems
Resistive touch screen technology
is recommended for use in POS (Point of Sale): Grocery Stores,
Hotels, Restaurants and Retail Stores; Industrial Applications:
MMI (Man Machine Interface), Machine and Process Control;
Portable Devices; Personal Information Management Systems;
Transportation Solutions; Medical Solutions: Equipment, Instrumentation
and Patient Monitoring Systems.  Resistive
technology generally uses a display overlay composed of layers,
each with a conductive coating on the interior surface. Special
separator "dots" are distributed evenly across the
active area and separate the conductive interior layers. The
pressure from using either a mechanical stylus or finger produces
an internal electrical contact at the "action point"
which supplies the controller with vertical and horizontal
analog voltages for data input. To reduce parallax for older
"curved" CRT applications only, resistive touchscreens
are generally spherical to match the curvature of the CRT
(true flat resistive touch overlays are also available
for TFT flat panels and/or CRTs). Our resistive touchscreens
are anti-glare to reduce reflective shine intensity, which
will slightly diffuse the light output throughout the screen.
Resistive technology offers tremendous versatility
in that activation can be initiated by; a gloved hand, fingernail,
mechanical stylus or an ungloved finger. Resistive touch
screens can be gasket sealed for NEMA 4 and NEMA
4X environments. Limitations include: Low light output,
diffused resolution images and the a plastic surface material
can be scratched if improperly touched. VarTech offers a variety
of resistive touch screen displays many are available
with an optional sunlight readable touch screen.
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