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visibility of the exact location of input before making actual contact with
the display.
The location of the cursor on the display is the location of input
regardless of the location of the pen tip. The cursor and the pen tip
should be closely aligned when the pen is in contact with the display. If
the pen and the cursor are out of alignment, realignment is
accomplished by following the instructions provided in the pen directory
of the MS Windows Control Panel. The pen will appear to be out of
alignment if the display settings have been changed from 640 x 480
resolution or 800 x 600 for color displays. Confirm the display is on the
appropriate setting before attempting to realign the pen.
Tapping the pen requires only light to moderate pressure. It is possible
to damage the pen by pounding the tip against the display with force.
Most problems using the pen are related to tapping speed and the
tapping area size. Both of these functions can be adjusted and tested
using the handwriting control software in the MS Windows Control
Panel. The width of the line created by the pen is also defined in the
Control Panel.
Pen Maintenance
The pen is powered by a 1.5 volt, alkaline, AAAA battery that can be
purchased in retail stores. Replacement batteries are manufactured by
several companies, the comparable part numbers follow:
Eveready E96
Varta 4061 101501
Duracell AAAA battery
Radio Shack 23-559
To replace the battery, unscrew the top and bottom sections of the pen
at the silver ring just above the barrel switch. The battery is installed
with the flat, negative (-) terminal entering the pen barrel first. The
nominal voltage supplied to the pen electronics is 1.5 volts, but the pen
will operate with the battery voltage in the range of 1.1 to 1.6 volts. The
pen electronics will not be destroyed or compromised in any way if the
battery is inserted in reverse.
Chapter 2 – Hardware Operation
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Touch Operations
Touch Screen Operation
The touch screen replaces a mouse in normal Windows
operation. Wherever you touch the screen with your finger or
stylus, the computer interprets it as a mouse click. Due to the
nature of the touch screen, it is sometimes hard to drag objects
across the screen and it is also hard to move the pointer
around the screen without selecting the object below the
cursor. This should be taken into account when applications
are being developed for touch screen devices.
In Windows 98, there is a right click button which can be
moved around on the desktop while the control panel
application for the ELO touch screen is open. The right click
button emulates a right click with a standard mouse. To use
this function, you click on the right click button, then click on
what you want to right click with the stylus.
Caring for the Touch Screen
With minimal maintenance, the touch screen will last many
years. When using the touch screen, you should not use an
abrasive or metallic pointer. You can use your finger or a
plastic tipped stylus, etc. The touch screen is easily scratched
if an abrasive stylus is used. Be careful not to let sand or grit sit
on the screen. Cleaning of the touch screen can be done with a
regular plastic cleaner such as Plexus.