Psion Teklogix 8570 - Manual (Page 41)

Teklogix 8570 Vehicle-Mount Computer User Manual 27
Chapter 3: Operating Information
Touch Screen
3.4.2 Touch Screen
The 8570 digitizer (touch screen) has a backing made of hardened glass, which
provides clarity and strength. The digitizer matrix uses resistive pressure-sensitive
technology to deliver X and Y coordinates to the applications and programs that run
on the 8570 Vehicle-Mount Computer. The touch screen is responsive to both finger
touch and stylus. The force/movement relationship can be optimized to provide the
user with a wide range of response. The drivers pre-installed in the computer can be
accessed to modify the touch screen sensitivity, response speed, double-touch speed
and calibration to improve user control. For instructions, see Appendix C: “Touch
Screen Calibration”.
The touch sensitivity rejects any input if the area is too large. This allows you to
“write” with the tip of the Teklogix stylus, while resting your hand on the display.
The computer will ignore your hand because it is too large.
An added advantage of touch screen technology is that the cursor position is not as
important as with other pointing devices. With the touch screen, you simply tap on
the screen, and the cursor will move there, instead of having to move in a specific
direction—which requires finding the cursor first.
The My-T-Soft program, a comprehensive and versatile onscreen keyboard
program, is installed on your computer. For a description of the program and
start-up instructions, see below.
3.4.3 My-T-Soft Onscreen Keyboard
My-T-Soft software is intended to give you all the functionality of a keyboard
without using a keyboard, allowing the user to remain on the 8570’s touch screen.
The “virtual” keyboard has a wide variety of functions and menu options, including
several language selections. Shown below is the 101-keyboard, without the many
options panels available that may be added to the display.
Figure 3.2 Onscreen Keyboard