www.national.com
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(Confidential) Revision 1.0
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1.0
User Interface
The WebPAD™ system’s tablet user interface is simple
and easy to use. It consists of an interactive touch screen,
scroll pad, and several user-configurable buttons. Speak-
ers and a microphone are built in. Additionally, two ports
have been added to the side of the tablet to allow for con-
nectivity to USB devices (i.e., external keyboard, head-
phones, external microphone, etc.).
The main way to interact with the tablet is through the
touch screen. Links and menus are accessed by touching
the screen directly over their titles. Additionally, the touch
screen is sensitive enough to allow for handwriting recog-
nition software to be used as a means of inputting charac-
ters. The touch screen on the tablet works with any type of
pointer, from a stylus (included) to the simple touch of a
finger.
All of the buttons on the tablet, including the scroll pad,
are user-configurable, except the power button. The user
can change the definition of the buttons by entering the
system configuration mode (see Section 2.0 “System
Configuration”). Some of the buttons suggest clearly
defined operations, like the scroll pad, but the definitions
are changeable.
To input text, whether for an email, search criteria, or to
enter a URL, a virtual keyboard is available. The keypad
works the same as a normal keyboard and is accessed
from the QNX menu button or the Virtual Keyboard task
box at the bottom of the screen. The user touches the
screen just above the desired key and the letter appears
next to the cursor.
1.1
GRAPHICAL USER INTERFACE
When the tablet finishes booting, the graphical user inter-
face (GUI) is started, as shown in Figure 1. The GUI con-
tains a window area and a task bar. The background of
the window area contains an application launcher. Touch-
ing either the icon or button beneath the icon invokes the
desired application. When applications are invoked, their
windows reside in this area.
The task bar contains a menu button and boxes for each
of the tasks currently running. The menu button is labeled
“QNX” and offers the user another method of launching
applications. To use the menu, touch the QNX button and
then the desired application.
Two tasks are initially started up when the tablet is booted:
RF Link task and Virtual Keyboard task. Touching any of
the task boxes on the task bar brings that task’s window to
the foreground (See Section 1.1.2 “RF Link Task Box” and
Section 1.1.3 “Virtual Keyboard Task Box”).
FIGURE 1. Application Launcher Screen
QNX® Menu Button
Invoke
Email Reader
Invoke
News Reader
Invoke Web Browser
RF Link Task Box
Virtual Keyboard Task Box
Task Bar
Window Area
