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Orion TI-84 Plus Talking Graphing Calculator User Guide
7.2 Graph Screen Operations
The sections below describe the Graph screen operations with the Orion TI-84
Plus. It is important to note that when graphing with the Orion TI-84 Plus, you
should use the Trace mode, not the Graph mode. The Trace mode cursor
delineates the graphed equation, while the Graph mode cursor moves freely
around the graph. The Graph mode currently does not give much helpful
information in regards to the equation. You can do almost all graphing functions
in Trace mode.
7.2.1 Equations Announcement - Trace Cursor Announcement
In the Trace mode, equations are announced in the following situations:
1. When the Graph screen is entered
2. When equations are switched using the Up or Down cursor keys
3. If the Expression Off setting (ExprOff) is enabled in the Format menu,
only the equation number is announced and not the entire equation.
7.2.2 X-Y Coordinates Announcement Cursor
The Coordinate On setting (CoordOn) must be enabled in the Format screen in
order for X- and Y-coordinate values of the cursor to be announced as the user
tracks through the graph. If CoordOn is not enabled coordinate values are not
announced or visible on the screen. Depending on the Orion setting selected,
either speech or tone output is provided for the coordinate values.
7.2.3 Busy Indicator
The busy indicator is the series of short beeps that sound when graph data is
being plotted on the calculator screen.
7.2.4 Complete Equation Playback
The portion of the graph that is visible on the screen is defined as the complete
equation. When this feature is enabled, the equation is represented by a
sequence of tones corresponding to the coordinate values.
When a graph is being plotted for the first time¸ the complete graph is always
played by default. The complete visible graph is played whenever there is a
change in the graph because of changes in various settings, equations, or as a
result of panning or re-centering the graph.
Playback can also be engaged through the use of dedicated Orion keys. Please
refer to the section titled "SonoGraph
Orbit Research
TM
" below for more details.
Proprietary Information
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