Specifications

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Glossary of “Touch” Terms and Related Technical Terminology
phosphor
Chemical compound that emits light when excited by
electrons.
pixel
Abbreviation for picture element, the smallest element of
the picture that can be displayed on the screen. Each pixel
contains one red, one blue, and one green phosphor.
PDF file (Adobe® Portable Document Format)
A universal file format that preserves the fonts, formatting,
colors, and graphics of any source document, regardless of
the application and platform used to create it. PDF is the
open de facto standard for distributing formatted documents
over the Internet. PDF files are compact and can be shared,
viewed, navigated, and printed using free Adobe Acrobat®
Reader® software, downloadable from
http://www.adobe.com. Documents can be converted into
PDF files with Adobe Acrobat 5.0 software.
point of information (POI)
The location at a facility where visitors seek information.
point of sale (POS)
The location at a merchant’s facility where customer make
purchases.
POS terminal
A device placed in a merchant location, connected to the
bank’s system or authorization service provider via
telephone lines, and designed to authorize, record, and
forward data for each sale by electronic means.
RAM
Random access memory. In technical references, this is
often simply referred to as memory. A computer’s memory
is not like its hard disk, which is permanent storage.
Memory can only store information while the computer is
on; however, it is much faster than a hard disk. A hard disk
is a mechanical device, but memory is stored on computer
chips, and information can be accessed from anywhere on
the chip almost instantly.
refresh rate
Number of times the screen can be redrawn per second—
an ergonomic issue directly related to long-term ease of
use. A higher refresh rate means a less "flickering" display,
resulting in less eyestrain and fatigue. Bandwidth,
horizontal scanning rate, and vertical scanning rate work
together to determine both the resolution and the refresh
rate.
resolution
The number of pixels that can be displayed on a screen,
specified as the number of pixels in a horizontal line
multiplied by the number of horizontal lines. For example, a
resolution of 800 x 600 is 800 pixels running horizontally
and 600 pixels running vertically—a total of 480,000
pixels.
RF
Radio frequency. It consists of electromagnetic waves at a
frequency between audio and infrared, used primarily in
radio and television transmission.
RFI
Radio frequency interference. This interference in the opera-
tion of a device is caused by incompatibility with ambient
RF signals. See also EMC, EMI, and RF.
RS-232 port
A standardized serial port for connecting a computer to
peripheral equipment, such as a printer, mouse, scanner,
modem, or touchscreen.
screen size versus viewable image size
Screen size is the total size, measured diagonally, of the
monitor screen before it is placed in the monitor cabinet.
Viewable image size is the size, measured diagonally, of the
monitor screen that can be viewed once it is in the cabinet.
stripe pitch
The equivalent of dot pitch on aperture grille tubes—the
distance between one stripe and the next one of the same
color, expressed in millimeters.
TCO95 and TCO99
A standard set by the Swedish Tjänstemännens Central
Organization (TCO) in 1991. It is even more stringent than
MPR II, especially for alternating electric fields (AEF). Not
only are the permitted field levels reduced compared with
MPR II, but the measuring distance is reduced as well.
Ergonomic and ecologic requirements are included for
TCO95. For TCO99, it is expanded to include more
ergonomic and ecologic requirements. See also MPR II.
tilt
The angle of the CRT with respect to the horizontal-
mounting bracket of the chassis. Tilt can vary, depending
on the monitor’s orientation to the earth’s magnetic poles.
Monitor manufacturers orient and align their products in
the eastern direction. When the monitor is facing a
north/south direction, there may be a slight rotation of the
image.
UL/cUL Listed
End products can be Listed by Underwriters Laboratories
for expected safety concerns. The CNL/USL designation in
the certification indicates evaluation to U.S. and Canadian
standards. Typical end products are desktop touchmonitors.
UR/cUR Recognized components
Component products can be Recognized by Underwriters
Laboratories for expected safety concerns. The CNR/USR