If you have a SAPI compliant speech engine installed, you can immediately turn on speech after starting the Accessible Graphing Calculator by pressing the CTRL and F12 keys (on startup, Speech is off by default.) CTRL F12 toggles the speech on and off from anywhere in the program.
Alternatively, you can manually check the "Allow Self-Voicing" box by moving to the Speech Tab Page and then TABbing to the box and then press the SPACE key. If starting with the focus on the Calculator Tab, access the Speech Tab Page by pressing the LEFT ARROW once, and then use the TAB key to access the Sound Effects check box. If using the menus, use ALT O, then S, and S again to move the focus to the Self-Voicing field. SPACE then toggles the checkbox.
The rest of the examples assume that the user has a SAPI speech engine installed and has turned on the Self-Voicing feature.
Try unchecking and checking the Sound Effects box to hear the different box sounds.
If starting with the focus on the Calculator Tab, access the Speech Tab Page by pressing the LEFT ARROW once, and then use the TAB key to access the Sound Effects check box. Alternatively, use ALT O, then S, and then press ENTER.
While in the Speech Tab Page, use the TAB key to move to the Voices list and then use the arrow keys to hear the different voices. When you find one that you like, use the TAB key to move to the Speech Controls area.
While in the Speech Tab Page, use the TAB key to select one of the Rate, Pitch, and Volume controls. Adjust each control by using the LEFT or RIGHT ARROW key to find a setting that is comfortable to you.
If you are not already in the Calculator Tab Page, switch to the page by moving the focus to the Tab pages list and use the ARROW keys to select the Calculator. Alternatively, use ALT O, then ENTER.
Evaluate some equations to see the calculator in action. When entering an equation, simply type the number or character. The = sign will evaluate the equation and read the result. CTRL S will read whatever is in the Calculator's display window.
Try typing the following example equations:
9+5=
Answer: 14
9-5=
Answer: 4
5*3=
Answer: 15
9/4=
Answer: 2.25
5^2=
Answer: 25
4O
Answer: 0.25. That's the capital letter O not the number 0. O is the
keyboard shortcut for the 1/X button. This value could also be obtained by
using the following expression:
1/4=
4+3/2=
Answer: 5.5
(4+3)/2=
Answer: 3.5. Note the different value obtained when using the parentheses.
5*2^2=
Answer: 20
(5*2)^2=
Answer: 100. Note the different value obtained when using the parentheses.
Here are some additional equations that demonstrate more advanced functions of the calculator. The equations can be entered by either typing them in from the keyboard as shown, or by TABbing to the appropriate button on the Calculator Tab Page.
7!
Answer: 5040. Note, the ! represents the factorial symbol. This expression
is equivalent to 7*6*5*4*3*2*1. This expression does not use an = sign.
2*4!=
Answer: 48. Note: while the factorial symbol does not need the = sign to
evaluate a number (in this case 4! = 4*3*2*1), the = sign is necessary to
evaluate the entire expression.
(2*4)!
Answer: 40320. Note the different value obtained when using the parentheses.
Also, the = sign is not necessary in this example.
16R
Answer: 4. Note, the Square Root (R) does not use an = sign.
7+9R=
Answer: 10. Note: while the Square Root (R) does not need the = sign to
evaluate a number (in this case 9), the = sign is necessary to
evaluate the entire expression.
(7+9)R
Answer: 4. Note the different value obtained when using the parentheses.
Also, the = sign is not necessary in this example.
100G
Answer: 2 (log base 10 of 10). Note, Log does not use an = sign.
PL
Answer: 1.1447. P is the key for Pi (3.14159) and L is the key for the
natural (base e) log.
Calculate the following trigonometric expressions:
Sine of 30 degrees.
Answer: 0.5 (CTRL T and ARROW keys or D to set the Trig Mode to degrees,
then 30 S)
Cosine of Pi radians (there is a Pi key with a
shortcut of SHIFT P.)
Answer: -1 (CTRL T then R to set Trig Mode to radians, then P C)
Tangent of 50 gradians.
Answer: 1 (CTRL T then G to set Trig Mode to gradians, then 50 T)
Inverse cosine of 0.5.
Answer: 60 degrees or 1.047 rad. (CTRL I to check the inverse checkbox,
Then 0.5 C)
Hyperbolic sine of 1.
Answer: 1.175 (CTRL H to check the Hyperbolic checkbox,
Then 1 S)
Change the base that the decimal number 170 is displayed in.
Type the following:
170, then CTRL B, then use the ARROW keys to choose the new base. To read
the "new" value use CTRL S. Since reading the display moves the
focus out of the Base box, to change the base again, use the CTLB B,
then the ARROW key sequence. Here are the values shown in the
display for the different bases:
Binary: 10101010
Octal: 252
Decimal: 170
Hex: AA
Store the value 54 into the memory. Then add 7 to that value. Voice the memory, then recall the value from memory.
Solution:
54 CTRL C
7 CTRL A
CTRL M
CTRL V
To enter items in the Evaluator Expression Input Box, move the focus to that box. If the focus is on the Calculator Tab Page tab label, press the UP ARROW once (or the RIGHT ARROW three times) and press the TAB key once. Alternatively, use the Options menu (ALT O, then E) to switch to the Evaluator from anywhere in the program.
Type in several expressions into the Evaluator's Expression box. Use the arrow keys to review the expressions. For example try the following equations. ENTER means to press the Enter or Return key. Use the UP and DOWN ARROW keys to review your entered expressions.
3+5 ENTER
2+(5*4) ENTER
4^2 ENTER
cos(1) ENTER
Note, trigonometric functions need to be entered in radians.
Now, press the UP ARROW key to review the entered expressions.
Perform a simple constant definition and then use that constant in an
expression. For example:
a=5 CTRL ENTER
2*a ENTER
(The result in the
result box will be 10)
From the Expression Input Box, press the TAB key once, this puts the focus in the Result box and reads the current value. The ARROW keys will step through the number one digit at a time.
From the Result Box press the TAB key once. This put the focus in the History List Box. Use the DOWN ARROW key to review previously entered expressions and their results.
Enter and evaluate a function in the Data Set 1's Expression
Input Box. Then explore the columns and data for the table. For example,
while the focus is on the Data Set 1 tab page's Expression Input Box, try:
sin(x)*x ENTER
Then press TAB to move the focus to the data table display area. The ARROW
keys will move the focus between cells in the table.
When the focus is in the Data Set 1's table, press the TAB key and select the "Statistical Description of Data Set" button with the space bar. The focus now moves to the Statistics window.
Explore the statistics for the function entered in Exercise 2.13 by moving the cursor with the UP and DOWN ARROW keys.
Next, press the TAB key once to move the focus tot he Mode window. Choose a different type of regression analysis using the UP and DOWN ARROW keys. Use SHIFT TAB to move the focus back to the data window and re-explore the Regression Analysis results for the new method bu using the UP and DOWN ARROW keys.
Now, TAB twice to move the focus to the x' field. Enter a number and press
ENTER. For example, try:
5 ENTER
For the Linear mode of Regression Analysis, the answer will be about 0.5. When finished, tab to the Return to Data Table button and select it with the SPACE key.
This exercise assumes that you have created the data table in exercise 2.13.
Transfer to the Plot Tab page by arrowing through the tab page labels and pressing TAB once to switch the focus to the Source field, or use the Options menu with ALT O, P, ENTER.
Choose Data Set 1 as the Source by using the ARROW keys.
Display the visual graph with the F3 key. Move the graph's cursor to the right with ALT RIGHT ARROW, left with ALT LEFT ARROW, to the graph's maximum Y value with ALT UP ARROW, and to the graph's minimum Y value with ALT DOWN ARROW. You should also hear a tone indicator representing the Y axis value at the cursor's location. A larger Y axis value is represented with a high pitch, a low value with a low pitch.
Use the TAB key to move the focus to the graph's X Co-ordinate value, then to the Y Coordinate value. Move the graph's cursor with ALT RIGHT ARROW, and re-read the coordianate value with CTRL R.
TAB to the plot Range field and explore the maximum and minimum X and Y coordinate boxes by using the TAB key (SHIFT TAB moves back). If you wish to change a value, type the desired number and then use the F4 key to update the data set and plot.
This exercise assumes that you have created the data table in exercise 2.13 and that Data Set 1 is selected in the Plot Tab Page.
Press F5 from anywhere in the Accessible Graphing Calculator program.
This exercise assumes that you have created the data table in exercise 2.13 and that Data Set 1 is selected in the Plot Tab Page.
Adjust the Data set and Tick Marks volumes to different levels by using the TAB key to select those areas and then use the ARROW keys to adjust the levels. Also change the Y threshold level by typing in a new number in the Y value field. Recalculate the plot with the F4 key and play the auditory graph with the F5 key.
This exercise assumes that you have created the data table in exercise 2.13 and that Data Set 1 is selected in the Plot Tab Page.
TAB to the Play time (Wave File Length). Adjust the play time with the ARROW keys. Tab to the Frequency Range and adjust the Minimum and Maximum frequencies that the auditory graph spans. Recalculate the plot with F4, and play the adjusted audio plot with the F5 key.
This exercise assumes that you have created the data table in exercise 2.13 and that Data Set 1 is selected in the Plot Tab Page.
Press the F6 hot key (or use the Write Wave File option in the Graph menu:
ALT G, W) to call the save dialog box. The dialog box is self-voicing.
Type the name that you would like to call your file, with the .wav
extension, and then press the ENTER key. For example type:
test.wav ENTER
Your auditory graph is now saved and can be played in any program that supports .wav files such as Windows Media Player.
Use the File menu's Import Data Set to load and display a data file called Example3-1.dat into Data Set 2.
First, select Data Set 2 as the Source in the Plot tab page by using the Options menu (ALT O), then Plot item (P), then Source (S). Use the UP or DOWN ARROW to select Data Set 2.
Now, use the key combination Alt F, then I to call the Input file dialog box. Choose Example3-1.dat file located in the Accessible Graphing Calculator directory by typing the file name and pressing ENTER, or by selecting the file from the File List area and press the Open button. The default directory is the one where the AGC is located; on most systems this is C:\Program Files\AGC. The data file is now in Data Set 2.
You can view the data set by switching to the Data Set 2 Tab Page (Alt O, 2). TAB to the data display and use the ARROW keys to move around the table. The data is automatically plotted in the visible graph, the F3 key shows the graph (or ALT G, G). The auditory graph of the data is played with F5.
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