Getting Started with the TI-73 Explorer™, CBL 2™, and CBR™ CL3456
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Contents Important Information ........................................................................ 2 Contents ............................................................................................ 3 TI-73 Explorer™ keys ....................................................................... 4 Turning on and turning off the TI-73 Explorer™ ............................... 5 Home screen ..................................................................................... 6 Entering text - t ........
TI-73 Explorer™ keys Accesses the secondary functions of keys (shown in yellow above keys). $"#! Let you move the cursor in four directions on the screen. : Erases entries and answers on the Home screen and entry line. 9 Lists the applications installed on your TI-73 Explorer. ^ Turns on the TI-73 Explorer. 4 b Evaluates an expression, executes an instruction, and selects a menu item. © 2003 Texas Instruments Incorporated.
Turning on and turning off the TI-73 Explorer™ • To turn on the TI-73 Explorer, press ^ located at the lower left corner of the device. • To turn off the TI-73 Explorer, press -, and then the ^ key. The next time you turn on the TI-73 Explorer, the Home screen appears with the same settings and memory contents retained. Automatic Power Down™ The Automatic Power Down™ (APD™) feature prolongs battery life by turning off the TI-73 Explorer automatically after five inactive minutes.
Home screen The first time you turn on your TI-73 Explorer™, this screen appears: Operating system version Note: Download the latest operating system (OS) to your Internetenabled computer using the TI-Connectivity Kit. Both the latest OS and TI Connectivity Kit are available at education.ti.com/shop. To clear the screen, press : twice. A blank screen with a flashing cursor appears called the Home screen. You can use the Home screen to enter problems and view results.
Example: Multiply 5 x 4. Press Result 5M4 b Entering secondary functions Secondary functions are printed in yellow above the keys. To select a secondary function, first press the yellow - key, and then press a key with a secondary function. For example, to view the CATALOG menu, press - |. Note: The flashing cursor (Ù) changes to Û when you press the - key. © 2003 Texas Instruments Incorporated.
Entering text - t You can use the Text Editor to key in text, such as alphabetic characters, braces, quotation marks, spaces, and relations. • To access the Text Editor, press - t. • To return to the Home screen from the Text Editor: Select Done in the Text Editor and press b. — or — To cancel the operation, press - l. Example: Insert R on the Home screen. Press Result -tR b Note: To select R, press !, ", # and $ as needed. R is pasted to the entry line.
Clear : and Quit - l Clear : The : key is located just below the four cursor keys at the upper right corner of the keyboard. • Pressing : while entering information clears the entry line. • Pressing : when the cursor is on a blank line clears the Home screen. Note: Although it does not affect calculations, consider clearing the Home screen before beginning a new problem.
Using subtraction T and negation a keys • Use T to enter subtraction operations. • Use a to enter a negative number in an operation, expression, or on a setup screen. Note: The TI-73 Explorer™ subtraction and negation symbols appear slightly different to make them easier to distinguish. The negative symbol is raised and slightly shorter. Example: Subtract 10 from 25. Press Result b/c mode. 25T10 b b/c mode. Example: Subtract L10 from 25. Press Result 2 5 Ta1 0 b Example: Subtract L5 from 25.
Keyboard math applications Example: Add L456 + 123. Press Result a4 5 6 \ 1 2 3 b Example: Divide 45.68 P 123. Press Result 4 5 `6 8 F 1 2 3 b Example: Multiply 28 Q 1.5. Press Result 28 M1.5b © 2003 Texas Instruments Incorporated.
Integer division - Œ - Œ divides two positive integers and displays the quotient and remainder (r). Example: Calculate 11 P 2 using integer division. Press Result 1 1 -Œ2 b Note: The answer is 5 with a remainder of 1. Percent C Example: Convert 75% to a decimal. Press Result 75C b 12 © 2003 Texas Instruments Incorporated.
Square 6 Example: Calculate 52. Press Result 56 b Example: Compare the results of L52 and (L5)2. Press Result a5 6 b Da5 E6 b © 2003 Texas Instruments Incorporated.
Square root - z Example: Calculate 256 . Press Result -z 2 5 6 E b Pi - „ The TI-73 Explorer™ displays p = 3.141592654 but uses 3.1415926535898 in calculations. Example: Multiply 4 Q p. Press Result 4 M- „ b 14 © 2003 Texas Instruments Incorporated.
Fractions This example shows the stacked fraction and manual simplification features of the TI-73 Explorer™. (See Chapter 3 of the TI-73 Explorer Software Graphing Calculator Guidebook.) Example: Add 1 3/4 + 2 4/8 and manually simplify the result. Press Result . ####" b-l (to select Mansimp) 1 <3 =4 "\ 2 <4=8 b Note: The arrow on the screen indicates that the answer can be simplified.
Choosing the simplification factor Example: Add 4/16 + 8/16 and choose the simplification factor to reduce the sum to lowest terms. Press Result -l: 4 =1 6 "\8 = 16b B2 b B3 b Because the result did not change, try another factor. B2 b Simplification is complete. 16 © 2003 Texas Instruments Incorporated.
Constants with counter-creating number patterns The TI-73 Explorer™ Constant feature makes it easy to create number patterns. Watch the pattern in the example below take shape on the Home screen. Example: Set up a SINGLE counter, define a constant (+5), and create a number pattern. Press Result y† } (if necessary) b †\5 -l: 0@ (Press @ repeatedly until you reach 30.) © 2003 Texas Instruments Incorporated.
Scrolling on the Home screen The TI-73 Explorer™ scrolling feature helps make number investigation easy by providing a copy and paste functionality. Example: Sum the second (5 + 5) and fifth (20 + 5) terms of the number pattern created in the previous example. (See “Constants with countercreating number patterns” on page 17.) Press Result Press } repeatedly to select the second term (n=2). b \ Press } repeatedly to select the fifth term (n=5). bb 18 © 2003 Texas Instruments Incorporated.
Using parentheses D E Example: Multiply 4 * 1 + 2 and 4 * (1 + 2). Press Result 4 M1 \2 b 4 MD1 \2 E b Example: Divide 1/2 P 2/3 (not using stacked fraction capability). Press Result D1 F2 E F D2 F3 E b 1 Example: Calculate 16 ^ --- . 2 Press Result 1 6 7 D 1 F2 E b Note: Try each of the examples above without the parentheses and see what happens! © 2003 Texas Instruments Incorporated.
TI-73 Explorer™ menus You use a menu to enter most TI-73 Explorer functions and instructions on the Home screen. To select an item from a displayed menu: • Press the number or letter displayed to the left of the item. — or — • Use the cursor keys († or }) to select the item, and then press Í. Some menus close automatically when you make a selection. If a menu remains open, press y 5 to exit. Example: Find the gcd(12, 14) = 2.
Selected TI-73 Explorer™ menus To select Description Mode menu Lists commands that let you control how .
To select Description Press TABLE SETUP menu Lists options specifying table settings yf Window format menu Lets you choose display settings for yg function graphing and statistical plotting 22 © 2003 Texas Instruments Incorporated.
Changing mode settings Use mode settings to specify how the TI-73 Explorer™ interprets entries and displays answers. Example: Change the mode setting for decimals from Float to 3 decimal places. Press Result . #"""" b -l 1`23456 b Note: Rounds to three decimal places. Note: You must highlight a mode setting and press Í to change it.
Creating lists and statistical plots To create categorical and number lists: 1. Use the List Editor to enter the categorical and numerical lists. 2. Use the PLOT menu to plot the lists. Example: Enter a categorical list in L1 made up of list elements BLUE, RED, and GREEN, enter a number list in L2, and plot a pie chart. Press Result 3 -t Note: Press the cursor keys to highlight characters in the Text Editor.
Press Result " (to move cursor to L2) 1 5 b2 5 b 1 0 b Note: The mode setting for decimals in this example is set to Float. (See “Changing mode settings” on page 23.) -e b !b (to enter statistical plot setup screen and turn Plot 1 on) #"""" b (to select the pie chart) © 2003 Texas Instruments Incorporated.
Press Result ###" b (to display numbers on the pie chart as percentages) *) Note: Press y 5 to return to the Home screen. 26 © 2003 Texas Instruments Incorporated.
Graphing a line To graph a line: 1. Display the Y= Editor. 2. Enter the line. 3. Display the graph. (See the TI-73 Explorer™ Software Graphing Calculator Guidebook for more detailed information.) Example: Graph the line Y = 2x + 1. Press Result &:2 I + 1 Note: The Y1 equal sign highlights when you enter a character. If another plot or function is highlighted, select it and press b to remove the highlight.
Error messages The TI-73 Explorer™ displays an error message whenever an error occurs. Example: Generate an error by entering the least common multiple function lcm( followed by only one number. Press Result -l: 1b 27¡ (to select lcm() Í • To return to the Home screen with the cursor on a new entry line, select 1:Quit. • To correct the error, select 2:Goto. The TI-73 Explorer returns to the original entry line with the cursor flashing at the location of the error.
Error Description DOMAIN You specified an argument to a function or instruction outside the valid range, such as using a negative frequency in box plots. Note: Because The TI-73 Explorer™ allows undefined values on a graph, this error is not displayed during graphing. ERROR IN XMIT • The TI-73 Explorer was unable to transmit an item. Check to see that the cable is connected firmly to both units and that the receiving unit is in the receive mode. • You pressed ^ to break during transmission.
MEMORY menu - Ÿ To display the list of commands used to manage TI-73 Explorer™ memory, press - Ÿ to open the MEMORY menu. To select a command from the MEMORY menu, use the cursor keys to select it and press b. To exit the MEMORY menu or a command screen and display the Home screen, press either - l or :. (See Chapter 14 of the TI-73 Explorer Software Graphing Calculator Guidebook.) Example: Display and exit the About screen.
Command Action 3:Check APPs Displays the amount of available App memory (up to eight spaces). 4:Delete Displays a list of variables that you can delete to increase the amount of available RAM. 5:Clear Home Clears the Home screen. 6:ClrAllList Clears all lists in memory. 7:Reset Displays the RESET menu, where you can reset all RAM and all defaults. 3:Check APPs - Ÿ The 3:Check APPs command displays the Spaces Free screen, where you can view the memory available for Apps in terms of spaces.
2. To display the RESET menu, press 7:Reset. 3. To display the RESET RAM menu, press 1:All RAM. 4. Press 2:Reset. 5. Press : to display the Home screen. Note: When you reset the TI-73 Explorer™, the display contrast is also reset and might need to be adjusted. See “Adjusting the display contrast” on page 5. 32 © 2003 Texas Instruments Incorporated.
Installing handheld software applications You can update the functionality of your TI-73 Explorer™ by installing handheld software applications (Apps). Installing Apps on your TI-73 Explorer is similar to installing new software applications on your computer. After downloading an App to your computer, use TI Connect™ or TI-GRAPH LINK™ software and a TI Connectivity cable to install the App on your TI-73 Explorer. You can find the latest Apps and a TI Connectivity Kit at education.ti.com/shop.
Instructions for Macintosh® using TI Connect™ 1. Connect your computer and handheld device with the TI Connectivity cable. 2. Turn on the handheld device and go to the Home screen. 3. Start the TI Connect software and click Connection to connect with the handheld device. 4. From the displayed list, select a device type and computer port. 5. Click Connect. The device window appears. 6. Locate an App file to transfer to the handheld device. 7. Drag the App file anywhere in the device window. 8.
Running software applications Example: Run the CBL™/CBR™ App on your TI-73 Explorer™. Press Result Œ Press † or $ as needed to run the CBL/CBR App. b © 2003 Texas Instruments Incorporated.
Collecting data using the CBL™/CBR™ App Example: Run the RANGER program from the CBL/CBR App. Press Result To run the CBL/CBR App, see “Running software applications” on page 35 Press any key. ††b (to run the RANGER program) b †b (to set defaults) Each menu item helps you quickly set up data collection using the CBR. Investigate on your own. 36 © 2003 Texas Instruments Incorporated.
Collecting data using the CBL 2é To use the CBL 2 data collection system for the first time and use the temperature probe to collect data: 1. Insert batteries in the CBL 2. 2. Connect the CBL 2 to the TI-73 Explorer™ using the unit-to-unit cable. Note: You can also use the cradle. (For instructions, see the diagram on the cradle, or see Getting Started With the CBL 2.) 3. To delete the DataMate programs prior to installing the DataMate App, reset the memory on your TI-73 Explorer.
9. A real-time graph measuring temperature appears. After about 30 seconds, press X to stop collecting data. You just successfully collected and plotted data. For other DataMate options (including other sensors, analysis, and data saving), see Getting Started With the CBL 2, or visit: education.ti.com/guides 38 © 2003 Texas Instruments Incorporated.
