Datasheet

14
Part I: Getting Started on BlackBerry Apps
✓ Trackball: Users can move across the pointer around the two-dimensional
BlackBerry screen; to select a highlighted item, the user clicks the
trackball itself. Figure 1-5 shows a BlackBerry 8830 with its trackball.
Figure 1-5:
The
BlackBerry
8830
smartphone
sports a
trackball for
input.
Trackball
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