Casio fx-CP400 User manual

ClassPad II
fx-CP400
User’s Guide
CASIO Education website URL
http://edu.casio.com
Access the URL below and register as a user.
http://edu.casio.com/dl/
E

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Be sure to keep physical records of all important data!
Low battery power or incorrect replacement of the batteries that power the ClassPad can cause the data stored
in memory to be corrupted or even lost entirely. Stored data can also be affected by strong electrostatic charge
or strong impact. It is up to you to keep backup copies of data to protect against its loss.
Backing Up Data
ClassPad data can be converted to a VCP file or XCP file and transferred to a computer for storage. For details,
see “15-2 Performing Data Communication between the ClassPad and a Personal Computer”.
• Be sure to keep all user documentation handy for future reference.
• The sample screens shown in this manual are for illustrative purposes only, and may not be exactly the
same as the screens actually produced by the ClassPad.
• The contents of this manual are subject to change without notice.
• No part of this manual may be reproduced in any form without the express written consent of the
manufacturer.
• The options described in “Chapter 15: Performing Data Communication” in this manual may not be
available in certain geographic areas. For full details on availability in your area, contact your nearest
CASIO dealer or distributor.
• In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral, incidental, or
consequential damages in connection with or arising out of the purchase or use of these materials.
Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim of any kind whatsoever against the
use of these materials by any other party.
• Windows®and Windows Vista®are registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.
• Mac, Macintosh, and Mac OS are registered trademarks or trademarks of Apple Inc. in the United States
and/or other countries.
• Fugue © 1999 – 2012 Kyoto Software Research, Inc. All rights reserved.
• Company and product names used in this manual may be registered trademarks or trademarks of their
respective owners.
• Note that trademark ™ and registered trademark ® are not used within the text of this manual.

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Contents
About This User’s Guide ............................................................................................................................9
Chapter 1: Basics ................................................................................................................ 10
1-1 General Guide .........................................................................................................................10
ClassPad at a Glance...............................................................................................................................10
Turning Power On or Off ..........................................................................................................................11
1-2 Power Supply .......................................................................................................................... 11
1-3 Built-in Application Basic Operations ..................................................................................12
Using the Application Menu......................................................................................................................12
Built-in Applications.................................................................................................................................. 12
Application Window.................................................................................................................................. 13
Using the OMenu...................................................................................................................................14
Interpreting Status Bar Information .......................................................................................................... 15
Pausing and Terminating an Operation....................................................................................................15
1-4 Input .........................................................................................................................................15
Using the Soft Keyboard .......................................................................................................................... 15
Soft Keyboard Key Sets ...........................................................................................................................16
Input Basics..............................................................................................................................................17
Various Soft Keyboard Operations........................................................................................................... 20
1-5 ClassPad Data.........................................................................................................................25
Data Types and Storage Locations (Memory Areas) ............................................................................... 25
Main Memory Data Types ........................................................................................................................26
Main Memory Folders...............................................................................................................................26
Using Variable Manager........................................................................................................................... 27
Managing Application Files ...................................................................................................................... 30
1-6 Creating and Using Variables ................................................................................................31
Creating a New Variable .......................................................................................................................... 31
Variable Usage Example.......................................................................................................................... 32
“library” Folder Variables.......................................................................................................................... 32
Rules Governing Variable Access............................................................................................................ 33
1-7 Configuring Application Format Settings.............................................................................34
Application Format Settings ..................................................................................................................... 34
Initializing All Application Format Settings................................................................................................ 40
1-8 When you keep having problems… ......................................................................................41
Chapter 2: Main Application ............................................................................................... 42
Main Application-Specific Menus and Buttons ......................................................................................... 42
2-1 Basic Calculations..................................................................................................................42
Arithmetic Calculations and Parentheses Calculations............................................................................ 42
Using the eKey..................................................................................................................................43
Omitting the Multiplication Sign................................................................................................................ 43
Using the Answer Variable (ans).............................................................................................................. 43
Assigning a Value to a Variable ............................................................................................................... 43
Calculation Priority Sequence ..................................................................................................................44
Calculation Modes....................................................................................................................................44
2-2 Using the Calculation History................................................................................................46
2-3 Function Calculations ............................................................................................................46
2-4 List Calculations .....................................................................................................................55
Inputting List Data in the Work Area.........................................................................................................55
LIST Variable Element Operations........................................................................................................... 55

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Using a List in a Calculation..................................................................................................................... 55
Using a List to Assign Different Values to Multiple Variables................................................................... 55
2-5 Matrix and Vector Calculations .............................................................................................56
Inputting Matrix Data ................................................................................................................................56
Performing Matrix Calculations ................................................................................................................ 56
Using a Matrix to Assign Different Values to Multiple Variables............................................................... 57
2-6 Specifying a Number Base ....................................................................................................57
Binary, Octal, Decimal, and Hexadecimal Calculation Ranges................................................................ 57
Selecting a Number Base.........................................................................................................................58
Arithmetic Operations............................................................................................................................... 58
Bitwise Operations ...................................................................................................................................58
Using the baseConvert Function (Number System Transform) ...............................................................59
2-7 Using the Action Menu...........................................................................................................59
Abbreviations and Punctuation Used in This Section............................................................................... 59
Example Screenshots ..............................................................................................................................60
Using the Transformation Submenu.........................................................................................................60
Using the Advanced Submenu.................................................................................................................62
Using the Calculation Submenu............................................................................................................... 65
Using the Complex Submenu...................................................................................................................67
Using the List-Create Submenu ...............................................................................................................69
Using the List-Statistics and List-Calculation Submenus ......................................................................... 70
Using the Matrix-Create Submenu........................................................................................................... 73
Using the Matrix-Calculation and Matrix-Row&Column Submenus ......................................................... 74
Using the Vector Submenu ...................................................................................................................... 77
Using the Equation/Inequality Submenu .................................................................................................79
Using the Assistant Submenu ..................................................................................................................82
Using the Distribution/Inv.Dist Submenu.................................................................................................. 82
Using the Financial Submenu .................................................................................................................. 88
Using the Command Submenu ................................................................................................................88
2-8 Using the Interactive Menu ...................................................................................................89
Interactive Menu Example........................................................................................................................ 89
Using the “apply” Command.....................................................................................................................89
2-9 Using the Main Application in Combination with Other Applications ...............................89
Using Another Application’s Window........................................................................................................ 90
Using the Stat Editor Window...................................................................................................................90
Using the Geometry Window....................................................................................................................91
2-10 Using Verify ...........................................................................................................................92
2-11 Using Probability ..................................................................................................................92
2-12 Running a Program in the Main Application ......................................................................93
Chapter 3: Graph & Table Application ............................................................................... 95
Graph & Table Application-Specific Menus and Buttons.......................................................................... 95
3-1 Storing Functions ...................................................................................................................97
Using Graph Editor Sheets.......................................................................................................................97
Storing a Function ....................................................................................................................................97
Graphing a Stored Function .....................................................................................................................98
Shading the Region Bounded by Two Expressions .................................................................................99
Overlaying Two Inequalities in an Intersection Plot / Union Plot.............................................................. 99
Saving Graph Editor Data to Graph Memory ......................................................................................... 100
3-2 Using the Graph Window .....................................................................................................100
Configuring View Window Parameters for the Graph Window............................................................... 100
Using View Window Memory.................................................................................................................. 102
Panning the Graph Window ................................................................................................................... 103

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Scrolling the Graph Window................................................................................................................... 103
Zooming the Graph Window...................................................................................................................103
Using Quick Zoom.................................................................................................................................. 104
Using Built-in Functions for Graphing..................................................................................................... 104
Saving a Screenshot of a Graph ............................................................................................................105
Adjusting the Lightness (Fade I/O) of the Graph Window Background Image....................................... 105
3-3 Using Table & Graph.............................................................................................................106
Generating a Number Table................................................................................................................... 106
Showing Linked Displays of Number Table Coordinates and Graph Coordinates (Link Trace)............. 107
Generating Number Table Values from a Graph.................................................................................... 108
Generating a Summary Table ................................................................................................................108
3-4 Using Trace ...........................................................................................................................109
Using Trace to Read Graph Coordinates............................................................................................... 109
3-5 Using the Sketch Menu ........................................................................................................ 110
Using Sketch Menu Commands............................................................................................................. 110
3-6 Analyzing a Function Used to Draw a Graph ..................................................................... 112
What You Can Do Using the G-Solve Menu Commands....................................................................... 112
Using G-Solve Menu Commands........................................................................................................... 112
3-7 Modifying a Graph ................................................................................................................ 113
Chapter 4: Conics Application ..........................................................................................114
Conics Application-Specific Menus and Buttons.................................................................................... 114
4-1 Inputting an Equation........................................................................................................... 115
4-2 Drawing a Conics Graph ...................................................................................................... 115
Drawing a Parabola................................................................................................................................115
Drawing a Circle..................................................................................................................................... 116
Drawing an Ellipse..................................................................................................................................116
Drawing a Hyperbola.............................................................................................................................. 116
Drawing a General Conics ..................................................................................................................... 116
4-3 Using G-Solve to Analyze a Conics Graph......................................................................... 116
What You Can Do Using the G-Solve Menu Commands....................................................................... 116
Using G-Solve Menu Commands........................................................................................................... 117
Chapter 5: Differential Equation Graph Application........................................................118
Differential Equation Editor Window-Specific Menus and Buttons......................................................... 118
Differential Equation Graph Window-Specific Menus and Buttons ........................................................ 118
5-1 Graphing a Differential Equation......................................................................................... 119
Graphing a First Order Differential Equation.......................................................................................... 119
Graphing a Second Order Differential Equation..................................................................................... 120
Graphing an Nth-order Differential Equation.......................................................................................... 120
Configuring and Modifying Initial Conditions .......................................................................................... 121
Configuring Differential Equation Graph View Window Parameters ......................................................122
5-2 Drawing f( x) Type Function Graphs and Parametric Function Graphs...........................123
5-3 Using Trace to Read Graph Coordinates............................................................................123
5-4 Graphing an Expression or Value by Dropping It into the Differential Equation
Graph Window ......................................................................................................................124
Chapter 6: Sequence Application .................................................................................... 125
Sequence Application-Specific Menus and Buttons............................................................................... 125
6-1 Recursive and Explicit Form of a Sequence ......................................................................126
Generating a Number Table................................................................................................................... 126
Determining the General Term of a Recursion Expression.................................................................... 127

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Calculating the Sum of a Sequence....................................................................................................... 127
6-2 Graphing a Recursion ..........................................................................................................127
Chapter 7: Statistics Application ..................................................................................... 128
7-1 Using Stat Editor...................................................................................................................128
Basic List Operations ............................................................................................................................. 128
Menus and Buttons Used for List Editing ...............................................................................................129
7-2 Drawing a Statistical Graph .................................................................................................130
Operation Flow Up to Statistical Graphing ............................................................................................. 130
Graphing Single-Variable Statistical Data .............................................................................................. 131
Graphing Paired-Variable Statistical Data.............................................................................................. 132
Overlaying a Regression Graph on a Scatter Plot ................................................................................. 134
Overlaying a Function Graph on a Statistical Graph.............................................................................. 135
Stat Graph Window Menus and Buttons ................................................................................................135
7-3 Performing Basic Statistical Calculations..........................................................................136
Calculating Statistical Values .................................................................................................................136
Performing Regression Calculations...................................................................................................... 138
Viewing the Results of the Last Statistical Calculation Performed (DispStat) ........................................ 139
7-4 Performing Advanced Statistical Calculations ..................................................................139
Performing Test, Confidence Interval and Distribution Calculations Using the Wizard.......................... 139
Tests.......................................................................................................................................................141
Confidence Intervals...............................................................................................................................143
Distributions............................................................................................................................................145
Input and Output Terms ......................................................................................................................... 148
Chapter 8: Geometry Application .................................................................................... 150
Geometry Application-Specific Menus and Buttons ............................................................................... 150
Configuring Geometry View Window Settings........................................................................................ 151
About the Geometry Format Dialog Box ................................................................................................ 151
8-1 Drawing Figures....................................................................................................................151
Drawing a Figure.................................................................................................................................... 151
Inserting Text Strings into the Screen ....................................................................................................155
Attaching an Angle Measurement to a Figure........................................................................................ 155
Displaying the Measurements of a Figure.............................................................................................. 155
Displaying the Result of a Calculation that Uses On-screen Measurement Values............................... 156
Using the Special Polygon Submenu..................................................................................................... 156
Using the Construct Submenu ............................................................................................................... 157
8-2 Editing Figures......................................................................................................................161
Selecting and Deselecting Figures......................................................................................................... 161
Moving and Copying Figures..................................................................................................................162
Pinning an Annotation on the Geometry Window...................................................................................162
Specifying the Number Format of a Measurement................................................................................. 162
Specifying the Color and Line Type of a Displayed Object .................................................................... 163
Changing the Display Priority of Objects................................................................................................ 163
8-3 Using the Measurement Box ...............................................................................................164
Viewing the Measurements of a Figure.................................................................................................. 164
Specifying and Constraining a Measurement of a Figure ...................................................................... 165
Changing a Label or Adding a Name to an Element.............................................................................. 166
8-4 Working with Animations.....................................................................................................167
Using Animation Commands.................................................................................................................. 167
8-5 Using the Geometry Application with Other Applications ................................................170
Drag and Drop........................................................................................................................................170
Copy and Paste......................................................................................................................................170

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Chapter 9: Numeric Solver Application........................................................................... 171
Numeric Solver Application-Specific Menus and Buttons ...................................................................... 171
Inputting an Equation ............................................................................................................................. 171
Solving an Equation ............................................................................................................................... 171
Chapter 10: eActivity Application .................................................................................... 173
eActivity Application-Specific Menus and Buttons.................................................................................. 173
10-1 Creating an eActivity ..........................................................................................................173
Basic Steps for Creating an eActivity .....................................................................................................173
Inserting Data into an eActivity............................................................................................................... 174
Inserting an Application Data Strip......................................................................................................... 175
Inserting a Geometry Link Row.............................................................................................................. 177
10-2 Transferring eActivity Files................................................................................................178
File Compatibility.................................................................................................................................... 178
Transferring eActivity Files between a ClassPad Unit and a Computer................................................. 178
Transferring eActivity Files between Two ClassPad Units ..................................................................... 178
Chapter 11: Financial Application.................................................................................... 179
11-1 Financial Application Basic Operations ...........................................................................179
Page Operations ....................................................................................................................................180
Configuring Financial Application Settings............................................................................................. 181
11-2 Performing Financial Calculations....................................................................................182
11-3 Calculation Formulas .........................................................................................................182
Simple Interest .......................................................................................................................................182
Compound Interest.................................................................................................................................183
Cash Flow ..............................................................................................................................................183
Amortization ...........................................................................................................................................184
Interest Conversion ................................................................................................................................184
Cost/Sell/Margin..................................................................................................................................... 185
Depreciation ...........................................................................................................................................185
Bond Calculation ....................................................................................................................................185
Break-Even Point ...................................................................................................................................186
Margin of Safety .....................................................................................................................................186
Financial Leverage................................................................................................................................. 186
Operating Leverage................................................................................................................................186
Combined Leverage............................................................................................................................... 186
Quantity Conversion...............................................................................................................................186
11-4 Financial Calculation Functions........................................................................................187
11-5 Input and Output Field Names...........................................................................................188
Chapter 12: Program Application .................................................................................... 189
Program Application-Specific Menus and Buttons ................................................................................. 189
12-1 Creating and Running Program ........................................................................................190
Creating a Program................................................................................................................................ 190
Running a Program ................................................................................................................................192
Terminating Program Execution............................................................................................................. 193
Creating a Text File................................................................................................................................ 193
Using Text Files......................................................................................................................................194
Converting a Text File to a Program File................................................................................................ 194
Converting a Program File to an Executable File................................................................................... 194
12-2 Debugging a Program ........................................................................................................195
Debugging After an Error Message Appears ......................................................................................... 195
Debugging a Program Following Unexpected Results........................................................................... 195

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Editing a Program...................................................................................................................................195
12-3 User-defined Functions......................................................................................................196
Creating a New User-defined Function .................................................................................................. 196
Executing a User-defined Function ........................................................................................................197
Editing a User-defined Function............................................................................................................. 197
12-4 Program Command Reference ..........................................................................................198
Using This Reference............................................................................................................................. 198
Syntax Conventions ...............................................................................................................................198
Command List ........................................................................................................................................199
12-5 Including ClassPad Functions in Programs ....................................................................218
Including Graphing Functions in a Program........................................................................................... 218
Including Table & Graph Functions in a Program .................................................................................. 218
Including Recursion Table and Recursion Graph Functions in a Program ............................................218
Including Statistical Graphing and Calculation Functions in a Program................................................. 218
Including Financial Calculation Functions in a Program......................................................................... 218
Chapter 13: Spreadsheet Application.............................................................................. 219
Spreadsheet Window-Specific Menus and Buttons ............................................................................... 219
Changing the Width of a Column ........................................................................................................... 220
Option Settings.......................................................................................................................................221
13-1 Inputting and Editing Cell Contents..................................................................................221
Selecting Cells........................................................................................................................................221
Inputting Data into a Cell........................................................................................................................ 222
Inputting a Formula ................................................................................................................................ 222
Inputting a Cell Reference......................................................................................................................223
Cell Data Types (Text Data and Calculation Data) ................................................................................ 224
Inputting a Constant into a Calculation Data Type Cell.......................................................................... 224
Using the Cell Viewer Window ............................................................................................................... 226
Changing the Text Color and Fill Color of Specific Cells........................................................................ 226
Copying or Cutting Cells and Pasting Them to Another Location .......................................................... 227
Recalculating Spreadsheet Expressions................................................................................................ 227
Importing and Exporting Variable Values............................................................................................... 228
13-2 Graphing..............................................................................................................................229
Basic Graphing Steps ............................................................................................................................229
Column Series and Row Series ............................................................................................................. 229
Graph Colors and Color Link.................................................................................................................. 230
Spreadsheet Graph Window-Specific Menus and Buttons .................................................................... 231
Graph Menu and Graph Examples.........................................................................................................232
Regression Graph Operations (Curve Fitting)........................................................................................ 234
Other Graph Window Operations........................................................................................................... 236
13-3 Statistical Calculations ......................................................................................................237
Single-variable, Paired-variable and Regression Calculations............................................................... 237
Test and Interval Calculations................................................................................................................ 238
Distribution Calculations......................................................................................................................... 240
About DispStat Command...................................................................................................................... 241
13-4 Cell and List Calculations ..................................................................................................241
Using the Cell Calculation Functions...................................................................................................... 241
Using the List Calculation Functions ......................................................................................................242
Chapter 14: System Application ...................................................................................... 243
14-1 Managing Memory Usage ..................................................................................................243
Using the Storage Sheet ........................................................................................................................243
Using the Main Memory Sheet and eActivity Sheet ............................................................................... 244

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14-2 Configuring System Settings ............................................................................................245
System Application Menus and Buttons................................................................................................. 245
Configuring System Settings.................................................................................................................. 245
Chapter 15: Performing Data Communication................................................................ 249
15-1 Data Communication Overview.........................................................................................249
Using the ClassPad Communication Application ................................................................................... 249
Select Connection Mode Dialog Box...................................................................................................... 250
15-2 Performing Data Communication between the ClassPad and a Personal Computer ..250
Connecting and Disconnecting with a Computer in the USB Flash Mode ............................................. 251
Transferring Data between the ClassPad and a Personal Computer .................................................... 252
Auto Import of VCP Files........................................................................................................................ 253
Rules for ClassPad Files and Folders.................................................................................................... 253
VCP and XCP File Operations ...............................................................................................................253
15-3 Performing Data Communication between Two ClassPads ...........................................255
Connecting to Another ClassPad Unit.................................................................................................... 255
Transferring Data between Two ClassPads........................................................................................... 255
Communication Standby ........................................................................................................................257
Interrupting an Ongoing Data Communication Operation ...................................................................... 257
15-4 Connecting the ClassPad to an EA-200 Data Analyzer...................................................257
Connecting a ClassPad to a CASIO EA-200 Data Analyzer.................................................................. 257
15-5 Connecting the ClassPad to a Projector ..........................................................................258
Projecting ClassPad Screen Contents from a Projector......................................................................... 258
Precautions when Connecting................................................................................................................258
Appendix ............................................................................................................................ 259
Character Code Table..................................................................................................................259
System Variable Table .................................................................................................................263
Graph Types and Executable Functions....................................................................................266
Error and Warning Message Tables ...........................................................................................267
Error Message Table ............................................................................................................................. 267
Warning Message Table ........................................................................................................................ 269
Low Memory Error Processing............................................................................................................... 270
Resetting and Initializing the ClassPad.....................................................................................270
Number of Digits and Precision .................................................................................................271
Number of Digits.....................................................................................................................................271
Precision.................................................................................................................................................271
Display Brightness and Battery Life ..........................................................................................272
Display Brightness..................................................................................................................................272
Battery Life .............................................................................................................................................272
Specifications ..............................................................................................................................272
About This User’s Guide
• The four digit boldface example numbers (such as 0201 ) that appear in Chapters 2 through 13 indicate
operation examples that can be found in the separate “Examples” booklet. You can use the “Examples”
booklet in conjunction with this manual by referring to the applicable example numbers.
• In this manual, cursor key operations are indicated as f, c, d, e(1-1 General Guide).

Chapter 1: Basics 10
Chapter 1:
Basics
This chapter provides a general overview of the ClassPad and application operations, as well as information
about input operations, the handling of data (variables and folders), file operations, and how to configure
application format settings.
1-1 General Guide
ClassPad at a Glance
3-pin data communication port
See Chapter 15 for details.
4-pin mini USB port
See Chapter 15 for details.
Touch screen
Icon panel
See “1-3 Built-in Application
Basic Operations”.
Cursor key*1
kkey
fkey*2
Stylus
Kkey
ckey
Keypad
*1 In this manual, cursor key operations are indicated as f, c, d, e.
*2 Certain functions (cut, paste, undo, etc.) or key input operations can be assigned to key combinations that
consist of pressing the fkey and a keypad key. For more information, see “14-2 Configuring System
Settings”.