Thisguide is designed to guide you in the use and care of the Orion TI-84 Plus Talking Graphing Calculator. The Orion TI-84 is a specially modified TI-84 Plus, based on the popular TI-84 Plus Graphing Calculator. The functionality and operation of the Orion are identical in all respects to the standard TI-84 Plus Graphing Calculator. The only differences are additional controls, jacks, speakers, and software for accessible feedback of both equations and graphs. This User's Guide covers the accessibility enhancements to the TI-84 Plus.
An accessible version of the TI-84 Plus Guidebook is included on a USB flash drive in the packaging of the Orion TI-84 Plus. You can access the Orion Resources page for accessible versions in DAISY, PDF, and HTML formats. You may also refer to the numerous online user manuals and guidebooks from Texas InstrumentsTM for the TI-84 Plus Graphing Calculator, as well as third-party tutorials.
When referencing the location of a TI-84 Plus key, the rows begin at the bottom and the columns begin on the left. For example, the On key is located at the bottom left of the TI-84 Plus in column 1, row 1.
Both sets of keys can be used in conjunction for navigation and other functions. For example, pressing both the CTRL key, which is the bottom-left key on the left side of the Orion, and the Left Arrow key, which is located on the right side of the Orion, lets you navigate to the far left of the review line.
The TI-84 Plus announces the answer. If you wish to repeat the answer, press the Repeat key. Repeat is denoted by a looping arrow (the word Repeat is displayed above the key). Repeat is the top-left key in the left set of keys of the Orion.
To begin the exploration process, position the Orion TI-84 Plus so that the keys face up and the ports are at the top. This is the normal operating position. The ports at the top of the calculator begin with the TI-84 serial link port on the left, followed by the micro port, the Mini-B port, and finally the earphone jack on the right. On the left and right side of the unit, at the top and near the ports, are the two speaker grills.
On the front of the Orion section of the calculator, there are 11 keys grouped like a game pad. Six keys are on the left in a three row, two column layout (like a braille cell); and an arrow key configuration is on the right, with a center Home key (denoted by a graphic of a house).
The keys on the bottom half of the calculator are the TI-84 Plus keys. There are 41 keys laid out in five rows and nine columns and a four-key directional pad in the top-right corner. The four keys of the directional pad are the arrow keys for the TI-84 Plus. The 12 number keys in the bottom and middle feel concave, while the other keys feel convex. There are two exceptions: The On key is flat and slanted forward, and the Enter key is larger than the other keys.
There are two separate power sources for the Orion TI-84 Plus Talking Graphing Calculator. The calculator uses four triple-A batteries, and the accessible extension (Orion) uses its own internal chargeable battery.
The triple-A batteries in the TI-84 should have a battery life of several months. If they become low, you receive a message at 5%. At that point, you have several days of charge remaining in the triple-A batteries. Until you replace the batteries, each time you turn on the calculator, it announces that the batteries are low.
Note: If the calculator is on and not in use for 5 minutes, it automatically powers off safely without loss of data. At restart, it returns to the location and procedure of when the unit was powered off. If you were using the Help mode, the calculator returns to the location and procedure prior to the initiation of Help mode.
The Orion TI-84 Plus is equipped with a Help mode designed to assist you with locating keys and confirming their functionality. Help mode can be used at any time, even in the middle of a calculation. When the unit is in Help mode, the calculator retains its previous status (i.e., if you were in the middle of an operation, the calculator is not interrupted and the display remains unchanged). To enter the Help mode, quickly press the 2nd key (column 1, row 9) three times.
In Help mode, to assist you with locating a particular key, each key is announced when pressed. Its primary function is also announced. When used in combination with various modifying keys, such as 2nd and Alpha, the Orion announces the secondary functions as set by the modifying key.
To exit the Help mode, press the On key, pressand hold the 2nd key, or by pressing the2nd key three times quickly. The calculator returns to the speech and operational mode you were using prior to entering Help mode and restores all the previously set preferences. You can resume operation from precisely the point where you left off.
The Orion TI-84 Plus Talking Graphing Calculator is a modified TI-84 Plus. The modifications are found at the top of the unit called the Orion. On the left side of the Orion, there are six keys laid out in three rows of two columns. On the right side, there are five keys in the form of a directional pad. The Orion keys are used to review text and graphs and to set accessibility preferences, such as volume, rate, voice selection, and playback tone duration, as well as many other useful settings.
The bottom-left key on the left-hand side of the Orion is the CTRL/PAUSE key. Pressing it in conjunction with other Orion keys changes the function of those keys. Tapping the CTRL key alone pauses speech feedback. Tapping the key a second time restarts the speech function at the point it left off. Pressing any other key while the speech function is paused deletes the buffered text.
The bottom-right key on the left-hand side of the Orion is the Shift/Mute key. Pressing the Shift key with other Orion keys changes the functionality of the key. Pressing the Shift key alone silences the speech mode.
The Orion can occasionally get out of sync with the TI-84. This usually happens when the batteries are changed or if a bug is encountered. It is rare that will you need to use the reset function, but it is here for those unusual times when it is necessary. If the speech function stops, or if you think the Orion is not audibilizing the graphs correctly, you will need to reset the Orion. To reset, turn the Orion TI-84 Plus off by pressing the 2nd key followed by the On key. When the calculator is off, press the Shift and CTRL keys on the Orion together. Then, turn the calculator back on by pressing the ON key. You should hear the Orion TI-84 Plus power on, at which point you can continue your work from where you left off. If the Orion does not come on, repeat the above steps. You may need to do this a couple of times. If it still doesn't turn on, call customer service. Adjusting the Volume The middle two keys on the left-hand side of the Orion are the Volume keys. Pressing the middle-left key, denoted by a speaker symbol and a minus sign, lowers the volume by one level and announces the current level. Pressing the middle-right key, denoted by a speaker symbol and a plus sign, raises the volume by one level and announces the current level. There are 10 levels, with 1 as the lowest and 10 as the highest. There are two separate settings for earphones and speakers. If you are using earphones, the volume control adjusts the earphone volume. When earphones are not connected, the volume control adjusts the volume of the speakers.
The middle two keys on the left-hand side of the Orion also control the rate of speech when pressed in conjunction with the CTRL key. Pressing both the CTRL key and the middle-left key, labeled as S.R. Down, once decreases the rate of speech by one level and announces the current rate. Pressing both the CTRL key and the middle-right key, labeled as S.R. Up, once increases the rate of speech by one level and announces the current rate. There are 10 rates of speech, with 1 as the lowest and 10 as the highest.
The Orion TI-84 Plus has many Preference options for changing the accessibility features. To access the Preferences menu, press the Preference (Pref.) key located at the top-right, on the left-hand side of the Orion.
When the Preference (Pref.) key is pressed, the Orion announces a list of vertically arranged items. Using the Orion navigation keys on the right, press Up or Down to move through the list. Press the Home key, located in the center of the arrow keys, to make a selection.
If the graph crosses multiple graphs, it says multiple numbers. In playback mode, once a graph is plotted on the screen, Orion plays the equation sound. If the current coordinate intersects with another graph, Orion plays intersection indication.
In trace mode while navigating the graph, Orion plays the coordinate sound. If the coordinate is intersecting with another graph, Orion plays the intersection indication and announces the graph number.
In playback mode, once the graph is plotted on the screen, Orion plays the equation sound. If the current coordinate is either minimum or maximum, the coordinate sound is mixed with min/max indication, respectively.
The Graph Screen SonoGraph mode is designed to help a user understand the groupings of points on non-contiguous graphs while in the Graph screen. It is arrived at by pressing the Graph key after entering the functions. It can also be used to view contiguous graphs on the Graph screen, but this method may have limited impact to a user's understanding of contiguous graphs. If viewing contiguous data it is better to use the trace screen to audibilize the graph.
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