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arunsingh_14 7:50pm on Tuesday, July 13th, 2010 
a good calculator but not for A2 exams It is a very good calculator with all the functions that you need. great! i got better then wat i was expecting. the delivery was super quick... thank you very much best AS/A2 level calculator available This calculator is amazing, it does everything you could want short of graphing.

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6. Complex Number Calculations
You can perform addition, subtraction, multiplication, division, parentheses calculations, function calculations, and memory calculations with complex numbers just as you do with the manual calculations described on pages 2-1 to 2-14. You can select the complex number calculation mode by changing the Complex Mode item on the Setup screen to one of the following settings. {Real}. Calculation in the real number range only*1 {a+bi}. Performs complex number calculation and displays results in rectangular form {r }. Performs complex number calculation and displays results in polar form*2 *1 When there is an imaginary number in the argument, however, complex number calculation is performed and the result is displayed using rectangular form. Examples: ln 2i = 0.6931471806 + 1.570796327i depends on the angle unit set for the Angle item on the Setup ln 2i + ln ( 2) = (Non-Real ERROR) *2 The display range of screen. Deg. 180 < Rad. < Gra. 200 <
Press (CPLX) ( (CPLX) on the fx-7400GII) to display the complex calculation number menu, which contains the following items. {i}. {imaginary unit i input} {Abs}/{Arg}. obtains {absolute value}/{argument} {Conj}. {obtains conjugate} {ReP}/{ImP}. {real}/{imaginary} part extraction { r }/{ a+bi}. converts the result to {polar}/{rectangular} form (i) in place of (CPLX) ( (CPLX) on the fx-7400GII)

You can also use (i).

Solutions obtained by the Real, a+bi and r modes are different for power root (xy) calculations when x < 0 and y = m/n when n is an odd number. Example: 3x ( 8) = 2 (Real) = 1 + 1.732050808i (a +bi) = (r ) operator into the polar coordinate expression (r ), press ( ).

To input the

Arithmetic Operations

[OPTN]-[CPLX]-[i]

Arithmetic operations are the same as those you use for manual calculations. You can even use parentheses and memory. Example (1 + 2i) + (2 + 3i) (CPLX)* (i) (i) * fx-7400GII: (CPLX)
Reciprocals, Square Roots, and Squares
Example (3 + i) (CPLX)* ( ) * fx-7400GII: (i) (CPLX)
Complex Number Format Using Polar Form
Example = (SET UP) (Deg) ( ) * fx-7400GII, fx-9750GII: (r ( ) ) *
Absolute Value and Argument

m n m (row) n (column) matrix
None no matrix preset {DEL}/{DELA}. deletes {a specific matrix}/{all matrices} {DIM}. {specifies the matrix dimensions (number of cells)}

Creating a Matrix

To create a matrix, you must first define its dimensions (size) in the Matrix Editor. Then you can input values into the matrix.
Example Highlight Mat B. (DIM) (This step can be omitted.) Specify the number of rows. Specify the number of columns. To create a 2-row 3-column matrix in the area named Mat B
All of the cells of a new matrix contain the value 0. Changing the dimensions of a matrix deletes its current contents. If Memory ERROR remains next to the matrix area name after you input the dimensions, it means there is not enough free memory to create the matrix you want.
Example To input the following data into Matrix B: 5 6
(Data is input into the highlighted cell. Each time you press , the highlighting moves to the next cell to the right.) Displayed cell values show positive integers up to six digits, and negative integers up to five digits (one digit used for the negative sign). Exponential values are shown with up to two digits for the exponent. Fractional values are not displayed.

Deleting Matrices

You can delete either a specific matrix or all matrices in memory.
To delete a specific matrix
1. While the Matrix Editor is on the display, use delete. 2. Press (DEL). (No) to abort the operation without deleting 3. Press (Yes) to delete the matrix or anything. and to highlight the matrix you want to

To delete all matrices

1. While the Matrix Editor is on the display, press (DEL A). (No) to abort the operation without 2. Press (Yes) to delete all matrices in memory or deleting anything.

Matrix Cell Operations

Use the following procedure to prepare a matrix for cell operations. 1. While the Matrix Editor is on the display, use and to highlight the name of the matrix you want to use. You can jump to a specific matrix by inputting the letter that corresponds to the matrix name. Inputting (N), for example, jumps to Mat N. Pressing (Ans) jumps to the matrix current memory. 2. Press and the function menu with the following items appears. {R-OP}. {row operation menu} {ROW} {DEL}/{INS}/{ADD}. row {delete}/{insert}/{add} {COL} {DEL}/{INS}/{ADD}. column {delete}/{insert}/{add} {EDIT}. {cell editing screen} All of the following examples use Matrix A.

Row Calculations

The following menu appears whenever you press display. {Swap}. {row swap} { Rw}. {product of specified row and scalar} { Rw+}. {addition of one row and the product of a specified row with a scalar} {Rw+}. {addition of specified row to another row} (R-OP) while a recalled matrix is on the

To swap two rows

Example To swap rows two and three of the following matrix: All of the operation examples are performed using the following matrix.

Matrix A =

(R-OP)

(Swap)

Input the number of the rows you want to swap.
To calculate the scalar multiplication of a row
Example To calculate the product of row 2 and the scalar 4 (R-OP) Input multiplier value.* Specify row number. * A complex number also can be input as multiplier value (k). ( Rw)
To calculate the scalar multiplication of a row and add the result to another row
Example To calculate the product of row 2 and the scalar 4, then add the result to row 3 (R-OP) Input multiplier value.* Specify number of row whose product should be calculated. Specify number of row where result should be added. * A complex number also can be input as multiplier value (k). 2-39 ( Rw+)

To add two rows together

Example To add row 2 to row 3 (R-OP) (Rw+)
Specify number of row to be added. Specify number of row to be added to.

Row Operations

{DEL}. {delete row} {INS}. {insert row} {ADD}. {add row}

To delete a row

Example To delete row 2 (ROW)

To insert a row

Example To insert a new row between rows one and two (ROW) (INS)

To add a row

Example To add a new row below row 3 (ROW) (ADD)

Column Operations

{DEL}. {delete column} {INS}. {insert column} {ADD}. {add column}

To delete a column

Example To delete column 2 (COL) (DEL)
Modifying Matrices Using Matrix Commands
To display the matrix commands
1. From the Main Menu, enter the RUN MAT mode. 2. Press 3. Press to display the option menu. (MAT) to display the matrix command menu.

[OPTN]-[MAT]

The following describes only the matrix command menu items that are used for creating matrices and inputting matrix data. {Mat}. {Mat command (matrix specification)} {M L}. {Mat List command (assign contents of selected column to list file)} {Aug}. {Augment command (link two matrices)} {Iden}. {Identity command (identity matrix input)} {Dim}. {Dim command (dimension check)} {Fill}. {Fill command (identical cell values)} You can also use (Mat) in place of (MAT) (Mat).

Matrix Data Input Format

[OPTN]-[MAT]-[Mat]
The following shows the format you should use when inputting data to create a matrix using the Mat command. a11 a12. a1n a21

V-Window Memory

You can store up to six sets of V-Window settings in V-Window memory for recall when you need them.
To store V-Window settings
1. From the Main Menu, enter the GRAPH mode. 2. Press want. 3. Press (V-WIN) to display the V-Window setting screen, and input the values you (STO) to display the pop-up window.
4. Press a number key to specify the V-Window memory where you want to save the settings, and then press. Pressing stores the settings in V-Window Memory 1 (V-Win1).
To recall V-Window memory settings
1. From the Main Menu, enter the GRAPH mode. 2. Press 3. Press (V-WIN) to display the V-Window setting screen. (RCL) to display the pop-up window.
4. Press a number key to specify the V-Window memory number for the settings you want to recall, and then press. Pressing recalls the settings in V-Window Memory 1 (V-Win1).
Specifying the Graph Range
You can define a range (start point, end point) for a function before graphing it. 1. From the Main Menu, enter the GRAPH mode. 2. Make V-Window settings. 3. Specify the function type and input the function. The following is the syntax for function input. Function 4. Draw the graph. Example Graph y = x2 + 3x 2 within the range 2 Use the following V-Window settings. Xmin = 3, Ymin = 10, GRAPH (V-WIN) (TYPE) ([) (DRAW) You can specify a range when graphing rectangular expressions, polar expressions, parametric functions, and inequalities. 5-4 (Y=) (]) Xmax = 5, Ymax = 30, Xscale = 1 Yscale = 5 ( [ ) Start Point End Point (])
This function lets you enlarge and reduce the graph on the screen. 1. Draw the graph. 2. Specify the zoom type. (ZOOM) (BOX). Box zoom Draw a box around a display area, and that area is enlarged to fill the entire screen. (FACT) Specifies the x-axis and y-axis zoom factors for factor zoom. (IN)/ (OUT). Factor zoom The graph is enlarged or reduced in accordance with the factor you specify, centered on the current pointer location. (AUTO). Auto zoom V-Window y-axis settings are automatically adjusted so the graph fills the screen along the y-axis. ( ) (ORIG). Original size Returns the graph to its original size following a zoom operation. ( ) (SQR). Graph correction V-Window x-axis values are corrected so they are identical to the y-axis values. ( ) (RND). Coordinate rounding Rounds the coordinate values at the current pointer location. ( ) (INTG). Integer Each dot is given a width of 1, which makes coordinate values integers. ( ) (PRE). Previous V-Window parameters are returned to what they were prior to the last zoom operation. Box zoom range specification 3. Use the cursor keys to move the pointer ( ) in the center of the screen to the location where you want one corner of the box to be, and then press. 4. Use the cursor keys to move the pointer. This causes a box to appear on the screen. Move the cursor until the area you want to enlarge is enclosed in the box, and then press to enlarge it. Example Graph y = (x + 5)(x + 4)(x + 3), and then perform a box zoom. Use the following V-Window settings. Xmin = 8, Ymin = 4, GRAPH (V-WIN) (TYPE) (DRAW) 5-5 (Y=) Xmax = 8, Ymax = 2, Xscale = 2 Yscale = 1

A composite function can consist of up to five functions.
To assign values to the coefficients and variables of a graph function
Example To assign the values 1, 0, and 1 to variable A in Y = AX21, and draw a graph for each value (TYPE) (A) (GRPH) (=) (GRPH) (=) (GRPH) (=) (SEL) (DRAW) (Y) (A) (Y) (A) (Y) (A) (Y=)
The above three screens are produced using the Trace function. See Function Analysis (page 5-29) for more information.
Editing and Deleting Functions
To edit a function in memory
Example To change the expression in memory area Y1 from y = 2xto

y = 2 x2 3

(Displays cursor.) (Changes contents.) (Stores new graph function.)
To change the line style of a graph function
1. On the Graph relation list screen, use you want to change. 2. Press (STYL). 3. Select the line style. Example To change the line style of y = 2x2 3, which is stored in area Y1, to Broken (STYL) ( ) (Selects Broken.) and to highlight the relation whose line style
To change the type of a function *1
1. While the Graph relation list is on the display, press or to move the highlighting to the area that contains the function whose type you want to change. 2. Press (TYPE) (CONV). 3. Select the function type you want to change to. Example To change the function in memory area Y1 from y = 2xto y < 2 x(TYPE)

(CONV)

( Y<) (Changes the function type to Y<.)
* The function type can be changed for rectangular coordinate functions and inequalities only.
1. While the Graph relation list is on the display, press the area that contains the function you want to delete. 2. Press (DEL) or. 5-8 or to move the highlighting to
3. Press (Yes) to delete the function or anything.
(No) to abort the procedure without deleting
Using the above procedure to delete one line of a parametric function (such as Xt2) also will delete the applicable paired line (Yt2, in the case of Xt2).
Selecting Functions for Graphing
To specify the draw/non-draw status of a graph

To generate a differential number table
Changing the setting of Setup screens Derivative item to On causes a number table that includes the derivative to be displayed whenever you generate a number table.
Locating the cursor at a differential coefficient displays dy/dx in the top line, which indicates differential.
An error occurs if a graph for which a range is specified or an overwrite graph is included among the graph expressions.
Specifying the Function Type
You can specify a function as being one of three types. Rectangular coordinate (Y=) Polar coordinate (r=) Parametric (Parm) 1. Press (TYPE) while the relation list is on the screen.
2. Press the number key that corresponds to the function type you want to specify. The number table is generated only for the function type specified on the relation list (Table Func). You cannot generate a number table for a mixture of different function types.

Editing Tables

You can use the table menu to perform any of the following operations once you generate a table. Change the values of variable x Edit (delete, insert, and append) rows Delete a table Draw a connect type graph Draw a plot type graph {FORM}. {return to Table relation list} {DEL}. {delete table} {ROW} {DEL}/{INS}/{ADD}. {delete}/{insert}/{add} row {G CON}/{G PLT}. {connected type}/{draw plot type} graph draw If you try to replace a value with an illegal operation (such as division by zero), an error occurs and the original value remains unchanged. You cannot directly change any values in the other (non-x) columns of the table.
Copying a Table Column to a List
A simple operation lets you copy the contents of a numeric table column into a list. Use row. and to move the cursor to the column you want to copy. The cursor can be in any
To copy a table to a list
Example To copy the contents of Column x into List 1 (LMEM) Input the number of the list you want to copy and then press.
Drawing a Graph from a Number Table
Use the following procedure to generate a number table and then draw a graph based on the values in the table. 1. From the Main Menu, enter the TABLE mode. 2. Make V-Window settings. 3. Store the functions. 4. Specify the table range. 5. Generate the table. 6. Select the graph type and draw it. (G CON). line graph (G PLT). plot type graph After drawing the graph, pressing Example (G T) or returns to the number table screen.

For details on the meanings of these statistical values, see Displaying the Calculation Results of a Drawn Paired-Variable Graph (page 6-14).

Regression Calculation

In the explanations from Linear Regression Graph to Logistic Regression Graph, regression calculation results were displayed after the graph was drawn. Here, each coefficient value of the regression line or regression curve is expressed as a number. You can directly determine the same expression from the data input screen. Pressing (CALC) (REG) displays a function menu, which contains the following items.
{ax+b}/{a+bx}/{Med}/{X^2}/{X^3}/{X^4}/{Log}/{ae^bx}/{ab^x}/{Pwr}/{Sin}/{Lgst}. {linear regression (ax+b form)}/{linear regression (a+bx form)}/{Med-Med}/{quadratic regression}/{cubic regression}/{quartic regression}/{logarithmic regression}/{exponential regression (aebx form)}/{exponential regression (abx form)}/{power regression}/ {sinusoidal regression}/{logistic regression} parameters Example To display single-variable regression parameters (CALC) (REG) (X) (ax+b)
The meanings of the parameters that appear on this screen are the same as those for Linear Regression Graph to Logistic Regression Graph.
Calculation of the Coefficient of Determination (r2) and MSe
You can use the STAT mode to calculate the coefficient of determination (r2) for quadratic regression, cubic regression, and quartic regression. The following types of MSe calculations are also available for each type of regression.
Linear Regression (ax + b). MSe = (a + bx). MSe = Quadratic Regression. MSe = Cubic Regression.. MSe = Quartic Regression. MSe = Logarithmic Regression. MSe = Exponential Repression (aebx). MSe = (abx). MSe = Power Regression. MSe = Sin Regression. MSe = Logistic Regression. MSe =

(yi (axi + b))2

(yi (a + bxi))2

1 nnnnn2

(yi (axi 2 + bxi + c))2
(yi (axi3+ bxi2+ cxi + d ))2
(yi (axi4+ bxi3 + cxi2 + dxi + e))2

XList..list for x-axis data (List 1 to 6) YList..list for y-axis data (List 1 to 6) C-Level.confidence level (0 C-Level < 1) Pooled..pooling On (in effect) or Off (not in effect)

x (Distribution)..data

(Distribution).standard deviation ( > 0) (Distribution).mean Lower (Distribution).lower boundary Upper (Distribution).upper boundary
df (Distribution).degrees of freedom (df > 0) n:df (Distribution)..numerator degrees of freedom (positive integer) d:df (Distribution)..denominator degrees of freedom (positive integer)
Numtrial (Distribution).number of trials
p (Distribution)..success probability (0

Output Terms

z...z score p...p-value t..t score
F..F value p..estimated sample proportion p1..estimated proportion of sample 1 p2..estimated proportion of sample 2

...mean of sample

sx..sample standard deviation sx1..standard deviation of sample 1 sx2..standard deviation of sample 2 sp..pooled sample standard deviation
n..size of sample n1..size of sample 1 n2..size of sample 2 df..degrees of freedom a...constant term b...coefficient

se..standard error

r...correlation coefficient r2..coefficient of determination
Left..confidence interval lower limit (left edge) Right..confidence interval upper limit (right edge) 6-52

9. Statistic Formula

Test 1-Sample Z Test 2-Sample Z Test 1-Prop Z Test 2-Prop Z Test 1-Sample t Test = (o

)/( /' )

= (o1 o2)/ (

/ 1) + (

z = (x/n p0)/ p0(1 p0)/n z = (x1/n1 x2/n2)/ p (1 p )(1/n1 + 1/n2)

)/(s /' )

t = (o1 o2)/ sp2(1/n1 + 1/n2)
2-Sample t Test (pooled) sp = ((n1 1)sx12 + (n2 1)sx22)/(n1 + n2 2)
df = n1 + nt = (o1 o2)/ sx12/n1 + sx22/n2
2-Sample t Test (not pooled) df = 1/(C 2/(n1 1) + (1 C )2/(n2 1)) C = (sx12/n1)/(sx12/n1 + sx22/n2)

(xi o)(yi p)/ (xi o)2

a = p bo
t = r (n 2)/(1 r 2) Oi: The i-th element of the observed

GOF Test

( Oi Ei)2 /Ei
Ei: The i-th element of the expected

( Oij Eij)2 /Eij

Oij: The element at row i, column j of

the observed matrix

Eij: The element at row i, column j of

3. Input the password and press
Inputting the wrong password when recalling a password protected program causes the message Mismatch to appear. 8-6

5. Command Reference

Command Index
Break..8-10 CloseComport38k..8-17 ClrGraph.. 8-14 ClrList..8-14 ClrMat..8-14 ClrText..8-14 DispF-Tbl, DispR-Tbl..8-14 Do~LpWhile...8-10 DrawDyna.. 8-14 DrawFTG-Con, DrawFTG-Plt.8-15 DrawGraph..8-15 DrawR-Con, DrawR-Plt..8-15 DrawR -Con, DrawR -Plt.8-15 DrawStat...8-15 DrawWeb.. 8-15 Dsz..8-12 Exp(..8-19 Exp Str(..8-19 For~To~(Step~)Next..8-9 Getkey..8-16 Goto~Lbl.. 8-12 If~Then~(Else~)IfEnd..8-9 Isz...8-12 Locate..8-17 Menu..8-13 OpenComport38k..8-17 Prog...8-11 PlotPhase..8-16 RclCapt..8-21 Receive(..8-17 Receive38k..8-18 Return..8-11 Send(...8-17 Send38k..8-18 Stop.. 8-11 StrCmp(..8-19 StrInv(..8-19 StrJoin(..8-19 StrLeft(..8-19 StrLen(..8-19 StrLwr(..8-19 StrMid(..8-20 StrRight(..8-20 StrRotate(..8-20 StrShift(..8-20 StrSrc(..8-20 StrUpr(..8-20 While~WhileEnd..8-10 ? (Input Command)..8-8 (Output Command)..8-8 : (Multi-statement Command).8-8 (Carriage Return)..8-8 (Comment Text Delimiter)..8-8 (Jump Code)..8-13 =, , >, <, , (Relational Operators).8-18 +...8-20
The following are conventions that are used in this section when describing the various commands. Boldface Text. Actual commands and other items that always must be input are shown in boldface. {Curly Brackets}. Curly brackets are used to enclose a number of items, one of which must be selected when using a command. Do not input the curly brackets when inputting a command. [Square Brackets]. Square brackets are used to enclose items that are optional. Do not input the square brackets when inputting a command. Numeric Expressions. Numeric expressions (such as 10, 10 + 20, A) indicate constants, calculations, numeric constants, etc. Alpha Characters. Alpha characters indicate literal strings (such as AB). 8-7

Basic Operation Commands

? (Input Command) Function: Prompts for input of values for assignment to variables during program execution. Syntax: ? Example: ? Description: This command momentarily interrupts program execution and prompts for input of a value or expression for assignment to a variable. If you do not specify a prompt, execution of this command causes ? to appear indicating the calculator is standing by for input. If a prompt is specified, <prompt>? appears to prompt input. Up to 255 bytes of text can be used for a prompt. Input in response to the input command must be a value or an expression, and the expression cannot be a multi-statement. You can specify a list name, matrix name, string name, function memory (fn), graph (Yn), etc. as a variable name. (Output Command) Function: Displays an intermediate result during program execution. Description: This command momentarily interrupts program execution and displays alpha character text or the result of the calculation immediately before the command. The output command should be used at locations where you would normally press the key during a manual calculation. : (Multi-statement Command) Function: Connects two statements for sequential execution without stopping. Description: Unlike the output command ( are executed non-stop. ), statements connected with the multi-statement command <variable name>, "<prompt>" ? A <variable name>

In this example we will select Graph (GRAPH mode graph screen data). This will insert the type of strip you selected (Graph strip in this example) one line above the line where you located the cursor in step 1 of this procedure. 5. Input up to 16 characters for the strip title, and then press.

6. Press

again to start creating strip data.
This will start up the built in application for the selected strip type (GRAPH mode in this example), and display the graph screen. At this point, a blank graph screen appears because there is no data yet.

7. Press

to display the graph function list screen.
8. Enter the function you want to graph. X 1) (Example: Y = 2

9. Press

(DRAW).
This will graph the function you entered.
10. To return to the eActivity workspace screen, press
The data that is graphed in step 8 will be saved in the Graph strip. The saved graph data is linked to this Graph strip only. It is independent of data for modes that are entered from the Main Menu. here again will display the graph screen, and draw the graph based on the 11. Pressing data saved by the strip. 10-9

Notes Strips

Notes is a special eActivity text editor that comes in handy when you want to write long text explanations on the workspace screen. You can call up the Notes screen from a Notes strip on the workspace screen. Input and editing operations on the Notes screen are identical to those you use for an eActivity text line.
The following describes the Notes screen function menu items. {JUMP}. Displays a JUMP menu that you can use to jump to the top ( (TOP)) of the data, the bottom ( (BTM)) of the data, the previous page ( (PgUp)), or the next page ( (PgDn)). {DEL-L}. Deletes the line that is currently selected or where the cursor is located. {INS}. Inserts one new line above the line where the cursor is currently located. {MATH}. Displays the MATH menu (page 1-12). {CHAR}. Displays a menu for inputting math symbols, special symbols, and characters of various languages. {A a}. Toggles between uppercase and lowercase input while alpha character input is enabled (by pressing the key).
To change the title of a strip
1. Use and to select the strip whose title you want to change. 2. Input up to 16 characters for the strip title, and then press

(Yes). Exits the strip and returns to the eActivity workspace screen. (No). Returns to the screen in step 3. 10-22
Pressing a key that is different from the one displayed in the upper or lower right corner of the screen will display the dialog box shown below. The guide operation cannot proceed if you do not follow its instructions.
. Returns to the previous screen. ). Exits the strip and displays the eActivity workspace screen.
Pressing during auto key input of an AUTO operation will stop key input and display the normal script screen. Guide playback cannot be restarted from the place where playback is stopped.
eActivity Guide Editing Techniques
To edit a guide from the end
On the editing screen, press (PLAY) ( ).
To insert SETUP or V-Window setting changes into a key operation sequence
On the editing screen, display the location where you want to insert the setting change operation, insert an n-key operation, and then input the change operation.
To allow students to continue with their own operation after executing a problem guide
Input an n-key operation with the example, and specify No for the exit strip option at the end of the guide creation operation.
To create a guide that starts with list data input
Use an AUTO operation for the list data input operation when creating a guide that starts with list data input. Select Ultra-fast for the play speed of the data input. This will cause the data to be input at very high speed when the guide is executed.
fx-7400GII/fx-9750GII These models support the following data operations: data display, search, and delete.
Important! fx-7400GII/fx-9750GII calculators are not equipped with storage memory or an SD card slot.
Because of this, the storage memory and SD card memory operations described below are not supported. fx-9860GII/fx-9860GII SD/fx-9860G AU PLUS/fx-9860G Slim These models are equipped with both a main memory and a storage memory, so the following data operations are supported: data display, search, and delete, as well as data copy between memories. The main memory is a work area where you can input data, perform calculations, and run programs. Data in the main memory is relatively safe, but it can be deleted by batteries going dead or when you perform a full reset. The storage memory uses flash memory, so data is safe even when power is interrupted. Normally, you should use the storage memory for data you need to store securely for long periods, loading data into the main memory only when you need it. Use of SD card memory (when an SD card is loaded in the SD card slot) also is supported by the fx-9860GII SD.

For details about the Graph Mode screen, see 10 Using the Graph Analysis Tools to Graph Data. 2. Press 2(DATA). This displays the Sampling Data List screen.
List of current data files cd stands for current data. The text on the right side of the colon indicates the channel name.
Sampling Data List Screen
9-2 Using Sample Data Memory
3. Use the f and c cursor keys to move the highlighting to the current data file you want to save, and then press 2(SAVE). This displays the screen for inputting a data name.
4. Enter up to 18 characters for the data file name, and then press w. This displays a dialog box for inputting a memory number. 5. Enter a memory number in the range of 1 to 99, and then press w. This saves the sample data at the location specified by the memory number you input.
The sample data file you save is indicated on the display using the format: <memory number>:<file name>.
If you specify a memory number that is already being used to store a data file, a confirmation message appears asking if you want to replace the existing file with the new data file. Press 1 to replace the existing data file, or 6 to return to the memory number input dialog box in Step 4. 6. To return to the E-CON2 main menu (page 1-1), press J twice. Note You could select another data file besides a current data file in step 3 of the above procedure and save it under a different memory number. You do not need to change the files name as long as you use a different file number.
9-3 Using Sample Data Memory
u To rename an existing sample data file Note You cannot use this procedure to rename a current data file name. 1. On the E-CON2 main menu (page 1-1), press 5(GRPH). This displays the Graph Mode screen. 2. Press 2(DATA). This displays the Sampling Data List screen. 3. Use the f and c cursor keys to move the highlighting to the data file you want to rename, and then press 3(REN). This displays the screen for inputting a file name. 4. Enter up to 18 characters for the new data file name, and then tap w. This returns to the Sampling Data List screen. 5. To return to the E-CON2 main menu (page 1-1), press J twice. u To delete a sample data file 1. On the E-CON2 main menu (page 1-1), press 5(GRPH). This displays the Graph Mode screen. 2. Press 2(DATA). This displays the Sampling Data List screen. 3. Use the f and c cursor keys to move the highlighting to the data file you want to delete, and then press 4(DEL). 4. In response to the confirmation message that appears, press 1(Yes) to delete the data file. To clear the confirmation message without deleting the data file, press 6(No). This returns to the Sampling Data List screen. 5. To return to the E-CON2 main menu (page 1-1), press J twice.

4. Use the cursor keys to move the magnifying glass cursor to the location on the screen that you want at the center of the enlarged or reduced screen. 5. Press w. This causes the magnifying glass to disappear and enters the zoom mode. The cursor keys perform the following operations in the zoom mode. To do this: Enlarge the graph image horizontally Reduce the size of the graph image horizontally Enlarge the graph image vertically Reduce the size of the graph image vertically Press this cursor key: e d f c
6. To exit the zoom mode, press J.
11-12 Graph Analysis Tool Graph Screen Operations
u To move a particular graph on a multi-graph display 1. When the graph screen contains multiple graphs, press K, and then 3(EDIT). This displays the [EDIT] menu. 2. Press 2(MOVE). This displays only one of the graphs that were originally on the graph screen. 3. Use the f and c cursor keys to cycle through the graphs until the one you want is displayed, and then press w. This enters the move mode and causes all of the graphs to reappear. 4. Use the d and e cursor keys to move the graph left and right, or the f and c cursor keys to move the graph up and down.
5. To exit the move mode, press J.
k Outputting a Specific Range of a Graph from the Speaker
Use the following procedure to output a specific range of a sound data waveform graph from the speaker. u To output a graph from the speaker 1. On the graph screen, press K, and then 4(SPKR). This displays the trace pointer for selecting the range on the graph.
2. Move the trace pointer to the start point of the range you want to output from the speaker, and then press w.
11-13 Graph Analysis Tool Graph Screen Operations
3. Move the trace pointer to the end point of the range you want to output from the speaker, and then press w. After you specify the start point and end point, an output frequency dialog box shown below appears on the display.
4. Input a percent value for the output frequency value you want. The output frequency specification is a percent value. To output the original sound as-is, specify 100%. To raise the original sound by one octave, input a value of 200%. To lower the original sound by one octave, input a value of 50%. 5. After inputting an output frequency value, press w. This outputs the waveform between the start point and end point from the EA-200 speaker. If the sound you configured cannot be output for some reason, the message Range Error will appear. If this happens, press J to scroll back through the previous setting screens and change the setup as required. 6. To terminate sound output, press the EA-200 [START/STOP] key. 7. Press w. This displays a screen like the one shown below.

doc1

fx-9860GII SD fx-9860GII fx-9860G AU PLUS fx-9750GII fx-7400GII Hardware

Users Guide

CASIO Worldwide Education Website

http://edu.casio.com

CASIO EDUCATIONAL FORUM
http://edu.casio.com/forum/
GUIDELINES LAID DOWN BY FCC RULES FOR USE OF THE UNIT IN THE U.S.A. (not applicable to other areas).

NOTICE

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.

FCC WARNING

Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. Proper connectors must be used for connection to host computer and/or peripherals in order to meet FCC emission limits. Connector SB-62 Power Graphic Unit to Power Graphic Unit USB connector that comes with the fx-9860GII SD/ fx-9860GII Power Graphic Unit to Windows compatible PC
Declaration of Conformity
Model Number: fx-9860GII SD/fx-9860GII/fx-9860G AU PLUS fx-9750GII/fx-7400GII Trade Name: CASIO COMPUTER CO., LTD. Responsible party: CASIO AMERICA, INC. Address: 570 MT. PLEASANT AVENUE, DOVER, NEW JERSEY 07801 Telephone number: 973-361-5400 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Windows is a registered trademark of Microsoft Corporation. Company and product names used in this manual may be registered trademarks or trademarks of their respective owners.
BEFORE USING THE CALCULATOR FOR THE FIRST TIME.
Batteries are not loaded in your calculator at the factory. Be sure to follow the procedure below to load batteries and adjust the display contrast before trying to use the calculator for the first time. 1. Making sure that you do not accidently press the key, slide the case onto the calculator and then turn the calculator over. Remove the battery cover from the calculator by pulling with your finger at the point marked.
fx-9860GII SD fx-9750GII fx-9860GII fx-7400GII fx-9860G AU PLUS
2. Load the four batteries that come with the calculator. Make sure that the positive (+) and negative () ends of the batteries are facing correctly.
3. Replace the battery cover, making sure that its tabs enter the holes marked and turn the calculator front side up. The calculator will turn on automatically and the MAIN MENU will appear on the display.
If the Main Menu shown to the right is not on the display, press the RESTART button on the back of the calculator.

RESTART button

The above screen shows the fx-9860GII SD. The appearance of the screens of other models may be slightly different.
4. Use the cursor keys ( , , , ) to select the SYSTEM icon and press then press ( ) to display the contrast adjustment screen.
5. Adjust the contrast. The cursor key makes display contrast darker. cursor key makes display contrast lighter. The (INIT) returns display contrast to its initial default. 6. To exit display contrast adjustment, press.
Precautions when Using this Product
A progress bar and/or a busy indicator appear on the display whenever the calculator is performing a calculation, writing to memory, or reading from memory. Busy indicator
Progress bar Never press the RESTART button or remove the batteries from the calculator when the progress bar or busy indicator is on the display. Doing so can cause memory contents to be lost and can cause malfunction of the calculator. fx-7400GII, fx-9750GII users. You can transfer data to a computer using the optionally available Program-Link software (FA-124). The Program-Link software can be used to backup data to a computer. fx-9860GII SD, fx-9860GII, fx-9860G AU PLUS users. The calculator is equipped with flash memory for data storage. It is recommended that you always backup your data to flash memory. For details about the backup procedure, see Using the Memory Manager (page 11-1) in the separate Software Version 2.00 Users Guide. You can also transfer data to a computer using the Program-Link software (FA-124) that comes bundled with the calculator. The Program-Link software can also be used to backup data to a computer. fx-9860GII SD only If the message No Card appears even though an SD card is loaded in the SD card slot, it means that the calculator is not recognizing the card for some reason. Try removing the card and then loading it again. If this does not work, contact the developer of the SD card. Note that some SD cards may not be compatible with this calculator.

Handling Precautions

Your calculator is made up of precision components. Never try to take it apart. Avoid dropping your calculator and subjecting it to strong impact. Do not store the calculator or leave it in areas exposed to high temperatures or humidity, or large amounts of dust. When exposed to low temperatures, the calculator may require more time to display results and may even fail to operate. Correct operation will resume once the calculator is brought back to normal temperature. The display will go blank and keys will not operate during calculations. When you are operating the keyboard, be sure to watch the display to make sure that all your key operations are being performed correctly. Replace the main batteries once every one year regardless of how much the calculator is used during that period. Never leave dead batteries in the battery compartment. They can leak and damage the unit. Do not use an oxyride battery* or any other type of nickel-based primary battery with this product. Incompatibility between such batteries and product specifications can result in shorter battery life and product malfunction. Keep batteries out of the reach of small children. If swallowed, consult a physician immediately. Avoid using volatile liquids such as thinner or benzine to clean the unit. Wipe it with a soft, dry cloth, or with a cloth that has been moistened with a solution of water and a neutral detergent and wrung out. Always be gentle when wiping dust off the display to avoid scratching it. In no event will the manufacturer and its suppliers be liable to you or any other person for any damages, expenses, lost profits, lost savings or any other damages arising out of loss of data and/or formulas arising out of malfunction, repairs, or battery replacement. It is up to you to prepare physical records of data to protect against such data loss. Never dispose of batteries, the liquid crystal panel, or other components by burning them. Be sure that the power switch is set to OFF when replacing batteries. If the calculator is exposed to a strong electrostatic charge, its memory contents may be damaged or the keys may stop working. In such a case, perform the Reset operation to clear the memory and restore normal key operation. If the calculator stops operating correctly for some reason, use a thin, pointed object to press the RESTART button on the back of the calculator. Note, however, that this clears all the data in calculator memory. Note that strong vibration or impact during program execution can cause execution to stop or can damage the calculators memory contents. Using the calculator near a television or radio can cause interference with TV or radio reception. Before assuming malfunction of the unit, be sure to carefully reread this Users Guide and ensure that the problem is not due to insufficient battery power, programming or operational errors. * Company and product names used in this manual may be registered trademarks or trademarks of their respective owners.

Be sure to keep physical records of all important data!
The large memory capacity of the unit makes it possible to store large amounts of data. You should note, however, that low battery power or incorrect replacement of the batteries that power the unit 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 back up copies of data to protect against its loss. Since this calculator employs unused memory as a work area when performing its internal calculations, an error may occur when there is not enough memory available to perform calculations. To avoid such problems, it is a good idea to leave 1 or 2 kbytes of memory free (unused) at all times. 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.
The contents of this Users Guide are subject to change without notice. No part of this Users Guide may be reproduced in any form without the express written consent of the manufacturer. Be sure to keep all user documentation handy for future reference. E-3

Contents

1. Key Layout 2. Using the Backlight 3. Specifications 4. Restart and Reset 5. Power Supply

1. Key Layout

fx-9860GII SD/fx-9860GII/fx-9860G AU PLUS

fx-9750GII

fx-7400GII E-5

2. Using the Backlight

(fx-9860GII SD/fx-9860GII/fx-9860G AU PLUS only)
Your calculator is equipped with a backlight for easy reading, even in the dark. You can conserve battery power by limiting backlight operation to only when you need it.
To turn the backlight on or off
Press (LIGHT) to toggle the backlight on and off.
Changing the Backlight On/Off Key You can configure the calculator so the backlight turns on when any key is pressed, instead of requiring the (LIGHT) to toggle the backlight on and off. For details, see To specify the backlight key (page 12-2) in the separate Software Version 2.00 Users Guide. Backlight duration The backlight turns off automatically if you do not perform any key operation for a preset amount of time (30 seconds or 10 seconds). If you perform a key operation, the backlight duration will be extended for the applicable preset amount of time (30 seconds or 10 seconds). See To specify the backlight duration (page 12-2) in the Software Version 2.00 Users Guide for information about how to specify 30 seconds or 10 seconds as the backlight duration time. Backlight and Battery Life Frequent use of the backlight will shorten battery life. The following are guidelines that show how battery life is affected by backlight use. It is based on a new set of alkaline batteries at a temperature of 25C. Backlight Use 5 minutes calculation* , 55 minutes display per hour; no backlight use 5 minutes calculation*1, 55 minutes display, 3 minutes backlight operation per hour 5 minutes calculation*1, 55 minutes display, 15 minutes backlight operation per hour 5 minutes calculation*1, 55 minutes display per hour; continuous backlight use *1 fx-9860GII SD: 5 minutes SD card access *2 fx-9860GII SD only

Approximate Battery Life 200 hours (80 hours*2) 190 hours (75 hours*2) 150 hours (70 hours*2) 80 hours (50 hours*2)

3. Specifications

Variables: 28 Calculation range: to 9.and 0. Internal operations use 15-digit mantissa. Exponential display range: Norm 1: 102 > |x|, |x| Norm 2: 109 > |x|, |x| 1010 1010
Program capacity: fx-9860GII SD/fx-9860GII/fx-9860G AU PLUS/fx-9750GII 62,000 bytes (max.) fx-7400GII 20,000 bytes (max.) Storage memory capacity: fx-9860GII SD/fx-9860GII/fx-9860G AU PLUS: 1.5MB (max.) fx-9750GII/fx-7400GII: None Power supply: Four AAA-size batteries (LR03 (AM4)) Power consumption: fx-9860GII SD/fx-9860GII/fx-9860G AU PLUS: 0.7 W fx-9750GII/fx-7400GII: 0.35 W Approximate battery life fx-9860GII SD/fx-9860GII/fx-9860G AU PLUS: 280 hours (continuous display of main menu) 200 hours* continuous operation (5 minutes calculation, 55 minutes display) * fx-9860GII SD: 80 hours when an SD card is used 190 hours* continuous operation (5 minutes calculation, 55 minutes display, 3 minutes backlight operation per hour) * fx-9860GII SD: 75 hours when an SD card is used 1 year (unused with power off) fx-9750GII/fx-7400GII: 300 hours (continuous display of main menu) 230 hours continuous operation (5 minutes calculation, 55 minutes display) 1 year (unused with power off) Any of the following can shorten battery life. - Certain SD card types or frequent SD card access - Frequent use of the backlight - Sequential program calculation execution - Certain battery types Auto power off: Power is automatically turned off approximately 10 minutes or 60 minutes after last operation. Ambient temperature range: 0C to 40C (32F to 104F)
Dimensions: fx-9860GII SD/fx-9860GII/fx-9860G AU PLUS: 21.2 mm (H) 91.5 mm (W) 184.0 mm (D) / " (H) 3 5/8" (W) 7 1/4" (D) fx-9750GII/fx-7400GII: 21.3 mm (H) 87.5 mm (W) 180.5 mm (D) / " (H) 3 1/2" (W) 7 1/8" (D) Approximate weight: fx-9860GII SD: 225 g (7.9 oz) (including batteries) fx-9860GII/fx-9860G AU PLUS: 220 g (7.8 oz) (including batteries) fx-9750GII/fx-7400GII: 205 g (7.2 oz) (including batteries)

Data Communications 3-pin serial port
Method: Start-stop (asynchronous), half-duplex Transmission speed (BPS): 115200 bits/second (normal) 9600 bits/second (When connected to CFX-9850G series or fx-7400G series calculator; Send/Receive commands) 38400 bits/second (Send38k/Receive38k commands) <115200 bits/second> Parity: EVEN Bit length: 8 bits Stop bit: Send: 1 bit Receive: 1 bit Includes parity (None) 1-bit X ON/X OFF Control: None <9600, 38400 bits/second> Parity: None Bit length: 8 bits Stop bit: Send: 3 bits Receive: 2 bits Includes parity (None) 1-bit X ON/X OFF Control: None USB port (All models except fx-7400GII) In accordance with USB 1.1 standards

4. Restart and Reset

Restart
Should the calculator start to act abnormally, you can restart it by pressing the RESTART button. Note, however, that you should only use the RESTART button only as a last resort. Normally, pressing the RESTART button reboots the calculators operating system, so programs, graph functions and other data in calculator memory is retained. RESTART button
fx-9860GII SD fx-9860GII fx-9860G AU PLUS Important!

fx-9750GII fx-7400GII

The calculator backs up user data (main memory) when you turn power off and loads the backed up data when you turn power back on. When you press the RESTART button, the calculator restarts and loads backed up data. This means that if you press the RESTART button after you edit a program, graph function, or other data, any data that has not been backed up will be lost.
Use reset when you want to delete all data currently in calculator memory and return all mode settings to their initial defaults. Before performing the reset operation, first make a written copy of all important data. For details, see Reset (page 12-3) in the separate Software Version 2.00 Users Guide.

5. Power Supply

This calculator is powered by four AAA-size (LR03 (AM4)) batteries. If the following message appears on the display, immediately turn off the calculator and replace the batteries as instructed.

If you try to continue using the calculator, it will automatically turn off in order to protect memory contents. You will not be able to turn power back on until you replace batteries. Be sure to replace the batteries at least once every one year, no matter how much you use the calculator during that time. The batteries that come with this calculator discharge slightly during shipment and storage. Because of this, they may require replacement sooner than the normal expected battery life.

Replacing Batteries

Precautions: Incorrectly using batteries can cause them to burst or leak, possibly damaging the interior of the calculator. Note the following precautions: Be sure that the positive (+) and negative () poles of each battery are facing in the proper directions. Never mix batteries of different types. Never mix old batteries and new ones. Never leave dead batteries in the battery compartment. Remove the batteries if you do not plan to use the calculator for long periods. Never try to recharge the batteries supplied with the calculator. Do not expose batteries to direct heat, let them become shorted, or try to take them apart. (Should a battery leak, clean out the battery compartment of the calculator immediately, taking care to avoid letting the battery fluid come into direct contact with your skin.) Keep batteries out of the reach of small children. If swallowed, consult with a physician immediately.

To replace the batteries

Never turn on the calculator while the batteries are removed or not loaded correctly. Doing so can cause memory data to be deleted and malfunction of the calculator. If mishandling of batteries causes such problems, correctly load batteries and then perform the restart operation to resume normal operation. Be sure to replace all four batteries with new ones. 1. Press Warning! Be sure to turn the calculator off before replacing batteries. Replacing batteries with power on will cause data in memory to be deleted. (OFF) to turn off the calculator.
2. Making sure that you do not accidently press the and then turn it over.

key, slide the case onto the calculator
3. Remove the battery cover from the calculator by pulling with your finger at the point marked. 4. Remove the four old batteries. 5. Load a new set of four batteries, making sure that their positive (+) and negative () ends are facing in the proper directions. 6. Replace the battery cover. 7. Turn the calculator front side up and slide off its case. Next, press to turn on power.
fx-9860GII SD fx-9860GII fx-9860G AU PLUS
If the figures on the display appear too light and hard to see after you turn on power, adjust the contrast.
About the Auto Power Off Function
Calculator power turns off automatically if you do not perform any operation within the Auto Power Off trigger time you specify. You can specify either 10 minutes or 60 minutes as the trigger time (see Power Properties Settings on page 12-1). To restore power, press.
Manufacturer: CASIO COMPUTER CO., LTD. 6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan Responsible within the European Union: CASIO EUROPE GmbH Casio-Platz Norderstedt, Germany
This mark applies in EU countries only.

CASIO COMPUTER CO., LTD.

6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan
One or more of the following patents may be used in the product. U.S.Pats. 5,166,897 5,210,708 5,535,317 5,539,867

SA0902-A

 

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