Orion TI-84 Plus Talking Graphing Calculator User Guide
Version 1.0
Orbit Research
Proprietary Information
23
A tone is generated if the TI-84 Plus cursor is unable to move when a navigation
key is pressed. This occurs most frequently because it has reached the limits of
the navigation area.
Some editing operations are not supported by the calculator if the TI-84 Plus is in
History mode
(previous item is selected). In this case, a tone sounds to indicate
that an error has occurred.
7.1.3
Copying the Previous Expression
To copy the previous expression, first navigate through the history by using the
TI-84 Plus Up and Down navigation keys until you reach the answer or
expression you wish to copy, press the
Enter
key and the history item you are on
is copied to the point where your calculator cursor was before moving through
the history.
Pressing the
Enter
key, with nothing at the calculator cursor and no item
selected, results in both the previous expression and answer being copied at the
calculator cursor location. In this case, the complete expression with its answer is
announced.
If the
2nd
key and
Enter
key are pressed, the previous expression is copied on
the screen and announced.
Note:
You cannot copy a matrix. If you attempt to copy a matrix from the history,
the cursor is returned to the calculator cursor.
7.1.4
Clear Operations
Pressing the
Clear
key while on the Home screen produces the following results:
If …
Then …
you select an expression or answer
and press
Clear
The calculator clears the selection and
moves the cursor to the next item.
no particular expression or answer is
selected
The calculator clears the entire screen
and Orion announces "Empty screen.
you press Clear while entering an
expression
The calculator clears the entire
expression and announces
"Expression Cleared." Other screen
content is not affected
Note:
Clearing the screen does not clear the history. It clears the screen and
moves your cursor to the top of the screen. You can still retrieve your history by
pressing the
TI-84 Plus Up
navigation key.
