Casio fx-7400G User manual

Program Mode Command List
GUIDELINES LAID DOWN BY FCC RULES FOR USE OF THE UNIT IN THE U.S.A. (not appli-
cable 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 protec-
tion 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.
Caution: Changes or modifications to the product not expressly approved by CASIO could void
the user’s authority to operate the product.
CASIO ELECTRONICS CO., LTD.
Unit 6, 1000 North Circular Road,
London NW2 7JD, U.K.
Important!
Please keep your manual and all information
handy for future reference.
MENU
[OPTN]key
STAT LIST
DRAW List List_
On DrawOn
Off DrawOff
Dim Dim_
[PRGM]key
[VARS]key
GRPH
Fill Fill(
COM
V-WIN
GPH1 S-Gph1_
Seq Seq(
If If_
Xmin Xmin
GPH2 S-Gph2_
Then Then_
Xmax Xmax
GPH3 S-Gph3_
Min Min(
Else Else_
Xscl Xscl
Scat Scatter
Max Max(
I·End IfEnd FACT
xy xyLine
Mean Mean(
Xfct Xfct Med Median(
For For_ Yfct Yfct
Hist Hist
To _To_ STAT
Box MedBox
Sum Sum_
Step _Step_ X
N-Dis N-Dist
CALC
Next Next nnSimp Simp
oo Int÷ _Int÷_
W·End
While_ !x!xXLinear Rmdr _Rmdr_
Whle
WhileEnd !x2 !x2 Med Med-Med
STAT
Do Do x"nx"nX^2 Quad
x^ x^
Lp·W LpWhile_
y^ y^
CTL x"n-1 x"n-1 Log Log
Prog Prog_ minX minX Exp Exp
PROB
Rtrn Return maxX maxX Pwr Power
X! !
Brk Break Y LIST
nPr P
Stop Stop pp List1 List1
nCr C
!y!yList2 List2
Ran# Ran#
JUMP !y2 !y2 List3 List3
NUM
Lbl Lbl_ !xy !xy List4 List4
Abs Abs_
Goto Goto_ y"ny"nList5 List5
Int Int_
## List6 List6
Frac Frac_
Isz Isz_ y"n-1 y"n-1 MARK
Rnd Rnd
Dsz Dsz_ minY minY Square
Intg Intg_
??maxY maxY $Cross
ANGL
^^ GRPH • Dot
oo
aaCALC
rr
CLR b b1VAR 1-Variable_
gg
Text ClrText cc2VAR 2-Variable_
o'''
Grph ClrGraph
List ClrList rrXLinearReg_
Pol( Pol(
DISP Q1 Q1 Med Med-MedLine_
Rec( Rec(
Stat DrawStat Med Med X^2 QuadReg_
Grph DrawGraph Q3 Q3
TABL Mod Mod Log LogReg_
Tabl DispTable PTS Exp ExpReg_
G-Con DrawTG-Con x1 x1 Pwr PowerReg_
G-Plt DrawTG-Plt y1 y1 LIST
REL x2 x2 SRT-A SortA(
==SRT-D SortD(
%%
y2 y2
GRPH
>>
x3 x3
SEL
<<
y3 y3
On G_SelOn_
>> GRPH Off G_SelOff_
<< YYTYPE
: : Xt Xt Y= Y=Type
Yt Yt Parm ParamType
TABL
Strt F_Start Y> Y>Type
End F_End Y< Y<Type
pitch F_pitch Y>Y>Type
Y<Y<Type
TABL
[SETUP]key
On T_SelOn_
Off T_SelOff_
Deg Deg [SHIFT]key
Rad Rad ZOOM ' '
Gra Gra Fact Factor_ ""
V-WIN ~ ~
V-Win ViewWindow_ **
Sto StoV-Win //
Rcl RclV-Win ##
SKTCH
Fix Fix_
Cls Cls
Sci Sci_
GRPH
Norm Norm
Y= Graph_Y=
Parm Graph(X,Y)=(
Auto S-WindAuto
Y> Graph_Y>
Man S-WindMan
Y< Graph_Y<
Rang VarRange
Y>Graph_Y >
List1 VarList1
Y<Graph_Y <
List2 VarList2
List3 VarList3
Plot Plot_ [ALPHA]key
List4 VarList4
Line Line ' '
List5 VarList5
Vert Vertical_ "”
List6 VarList6
Hztl Horizontal_ ~~
d/dx d/dx(
Con G-Connect
Plot G-Plot
Ymin Ymin
Ymax Ymax
Yscl Yscl
Tmin Tmin
Tmax Tmax
Tpth Tptch

i
BEFORE USING THE CALCULATOR FOR THE FIRST
TIME...
This calculator does not contain any main batteries when you purchase it. Be sure to perform
the following procedure to load batteries, reset the calculator, and adjust the color contrast
before trying to use the calculator for the first time.
1. Push the battery compartment cover on the back of the
calculator in the direction noted in the illustration and
remove it.
2. Load the two batteries that come with calculator.
• Make sure that the positive (+) and negative (–) ends of
the batteries are facing correctly.
3. Slide the battery compartment cover back into place, and then press the RESET button on
the back of the calculator with a thin, pointed object. When you do, the RESET screen
illustrated nearby appears.
4. Press 1(YES) to reset the calculator.
1
RESET button

ii
5. Press m.
6. Use the cursor keys (f, c, d, e) to select the CONT icon and press w
or simply press hto display the contrast adjustment screen.
7. Press dto make the figure on the screen lighter or eto make them darker.
8. After getting the contrast the way you want it, press mto return to the main menu.

Getting Acquainted
— Read This First!
1
Chapter
: Important notes
: Notes
: Reference pages
The symbols in this manual indicate the
following messages.
P.000

2
Getting Acquainted Chapter 1
1. Using the Main Menu
The main menu appears on the display whenever you turn on the calculator. It con-
tains a number of icons that let you select the mode (work area) for the type of
operation you want to perform. You can also make the Main Menu appear at any time
by pressing m.
The following explains the meaning of each icon.
Icon Meaning
Use this mode for arithmetic calculations and func-
tion calculations.
Use this mode to perform single-variable (stand-
ard deviation) and paired-variable (regression) sta-
tistical calculations, and to draw statistical graphs.
Use this mode for storing and editing numeric
data.
Use this mode to store graph functions and to
draw graphs using the functions.
Use this mode to store functions, to generate a
numeric table of different solutions as the values
assigned to variables in a function change, and
to draw graphs.
Use this mode to store programs in the program
area and to run programs.
Use this mode to adjust the contrast of the dis-
play.
Use this mode to check how much memory is
used and remaining, to delete data from memory,
and to initialize (reset) the calculator.

3
Getting Acquainted Chapter 1
uu
uu
uTo enter a mode
Example To enter the RUN Mode from the Main Menu
1. Press mto display the Main Menu.
2. Use d, e, f, and cto move the highlighting to the RUN icon.
3. Press wto enter the RUN Mode.
• You can also enter a mode without highlighting an icon in the Main Menu by
inputting the number marked in the lower right corner of the icon.
• When you enter a mode, up to four function key menu items appear at the bottom
of the display. Each menu item corresponds to the function key (1, 2, 3,
4) that is below the item. Some function menus have multiple pages. When this
happens, you should press [to advance to the next menu page.
Example Menus
12341234

4
Getting Acquainted Chapter 1
2. Key Table
Alpha Lock
Normally, once you press aand then a key to input an alphabetic char-
acter, the keyboard reverts to its primary functions immediately. If you press
!and then a, the keyboard locks in alpha input until you press a
again.

5
Getting Acquainted Chapter 1
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7
Page Page Page Page Page
Page Page Page Page Page
31

6
Getting Acquainted Chapter 1
3. Key Markings
Many of the calculator’s keys are used to perform more than one function. The func-
tions marked on the keyboard are color coded to help you find the one you need
quickly and easily.
Function Key Operation
1log l
210x!l
3Bal
The following describes the color coding used for key markings.
Color Key Operation
Orange Press !and then the key to perform the marked
function.
Red Press aand then the key to perform the marked
function.
4. Selecting Modes
kk
kk
kUsing the Set Up Screen
The first thing that appears when you enter a mode is the mode’s set up screen,
which shows the current status of settings for the mode. The following procedure
shows how to change a set up.
uu
uu
uTo change a mode set up
1. Select the icon you want and press wenter a mode and display its initial screen.
Here we will enter the RUN Mode.

7
Getting Acquainted Chapter 1
2. Press !Z to display the mode’s set up
screen.
• This set up screen is just one possible exam-
ple. Actual set up screen contents will differ
according to the mode you are in and that
mode’s current settings.
3. Use the fand ccursor keys to move the highlighting to the item whose
setting you want to change.
4. Press the function key (1to 4) that is marked with the setting you want to
make.
5. After you are finished making any changes you want, press Qto return to the
initial screen of the mode.
kk
kk
kSet Up Screen Function Key Menus
This section details the settings you can make using the function keys in the set up
display.
uu
uu
uGraph Function Type (F-Type)
1(Y=) .......... Rectangular coordinate
graphs
2(Parm) ...... Parametric coordinate graphs
[
1(Y>) .......... y> f(x)inequality graph
2(Y<) .......... y< f(x)inequality graph
3(Y!) .......... y>f(x)inequality graph
4(Y") .......... y<f(x)inequality graph
Press [to return to the previous menu.
• The setting you make for F-Type determines the variable name that is input when
you press T.
uu
uu
uGraph Draw Type (D-Type)
1(Con) ........ Connection of points plot-
ted on graph.
2(Plot) ........ Plotting of points on graph
without connection.
1234
1234[
1 2 3 4 [
1234

8
Getting Acquainted Chapter 1
uu
uu
uAngle unit (Angle)
1(Deg) ........ Sp eci fies d egr ees a s
default.
2(Rad) ........ S p e c i f i e s r a d i a n s a s
default.
3(Gra) ........ Specifies grads as default.
uu
uu
uStatistical Graph View Window Setting (S-Wind)
1(Auto) ....... Automatic setting of view
window values for statisti-
cal graph drawing.
2(Man) ....... Manual setting of view
window values for statisti-
cal graph drawing.
uu
uu
uGraph Function Display (G-Func)
1(On) .......... Turns on display of function
during graph drawing and
trace.
2(Off) .......... Turns off display of function
during graph drawing and
trace.
uu
uu
uSimultaneous Graph Mode (Simul-G)
1(On) .......... Turns on simultaneous
graphing of all functions in
memory.
2(Off) .......... Simultaneous graphing off
(graphs drawn one-by-
one).
uu
uu
uTable & Graph Generation Settings (Var)
1(RANG) .... Table generation and graph
drawing using numeric ta-
ble range.
2(List1)
3(List2) ....
4(List3)
P.111
P.111
1234
1234
1234
1234
Table generation and graph
drawing using list data.
P.73
1 2 3 4 [

9
Getting Acquainted Chapter 1
[
1(List4)
2(List5) ....
3(List6)
Press [to return to the previous menu.
Other menus for set up (Display, Simply, Frac) are described in each applicable
section of this manual as they come up.
Abbreviations
STAT ............... Statistics
PRGM ............ Program
CONT ............. Contrast
MEM ............... Memory
5. Display
kk
kk
kAbout the Display Screen
This calculator uses two types of display: a text display and a graphic display. The
text display can show 13 columns and six lines of characters, with the bottom line
used for the function key menu, while the graph display uses an area that measures
79 (W) #47 (H) dots.
Text Display Graph Display
kk
kk
kAbout Menu Item Types
This calculator uses certain conventions to indicate the type of result you can expect
when you press a function key.
• Next Menu
Example:
Selecting displays a menu of list functions.
• Command Input
Example:
Selecting inputs the “List” command.
Table generation and graph
drawing using list data.
1234[

10
Getting Acquainted Chapter 1
• Direct Command Execution
Example:
Selecting executes the DRAW command.
kk
kk
kExponential Display
The calculator normally displays values up to 10 digits long. Values that exceed this
limit are automatically converted to and displayed in exponential format. You can
specify one of two different ranges for automatic changeover to exponential display.
Norm 1 ........... 10–2 (0.01) > |x|, |x| >1010
Norm 2 ........... 10–9 (0.000000001) > |x|, |x| >1010
uu
uu
uTo change the exponential display range
1. Press !Z to display the Set Up Screen.
2. Use fand cto move the highlighting to “Display”.
3. Press 3(Norm).
The exponential display range switches between Norm 1 and Norm 2 each time you
perform the above operation. There is no display indicator to show you which expo-
nential display range is currently in effect, but you can always check it by seeing what
results the following calculation produces.
Ab/caaw(Norm 1)
(Norm 2)
All of the examples in this manual show calculation results using Norm 1.
For full details about the “Display”, see “Selecting Value Display Modes”.
uu
uu
uHow to interpret exponential format
1.2E+12 indicates that the result is equivalent to 1.2#1012. This means that you should
move the decimal point in 1.2 twelve places to the right, because the exponent is
positive. This results in the value 1,200,000,000,000.
1.2E–03 indicates that the result is equivalent to 1.2 #10–3. This means that you should
move the decimal point in 1.2 three places to the left, because the exponent is nega-
tive. This results in the value 0.0012.
P.27

11
Getting Acquainted Chapter 1
kk
kk
kSpecial Display Formats
This calculator uses special display formats to indicate fractions, and sexagesimal
values.
uu
uu
uFractions
.......... Indicates: 456
uu
uu
uSexagesimal Values
.......... Indicates: 12°34’ 56.78"
• In addition to the above, this calculator also uses other indicators or symbols,
which are described in each applicable section of this manual as they come up.
kk
kk
kCalculation Execution Screen
Whenever the calculator is busy drawing a graph or executing a long, complex calcu-
lation or program, a black box (k) flashes in the upper right corner of the display.
This black box tells you that the calculator is performing an internal operation.
6. Contrast Adjustment
Adjust the contrast whenever objects on the display appear dim or difficult to see.
uu
uu
uTo display the contrast adjustment screen
Highlight the CONT icon in the Main Menu and
then press w.
Press dto make the figures on the screen lighter or eto make them darker.
After getting the contrast the way you want it, press mto return to the main menu.
12
–––
23

12
Getting Acquainted Chapter 1
7. When you keep having problems…
If you keep having problems when you are trying to perform operations, try the fol-
lowing before assuming that there is something wrong with the calculator.
kk
kk
kGet the Calculator Back to its Original Mode Settings
1. In the Main Menu, select the RUN icon and press w.
2. Press !Zto display the Set Up Screen.
3. Highlight “Angle” and press 2(Rad).
4. Highlight “Display” and press 3(Norm) to select the exponential display range
(Norm 1 or Norm 2) that you want to use.
5. Now enter the correct mode and perform your calculation again, monitoring the
results on the display.
kk
kk
kLow Battery Message
The low battery message appears while the main battery power is below a certain
level whenever you press oto turn power on or mto display the Main Menu.
oor m
$
About 3 seconds later
If you continue using the calculator without replacing batteries, power will automati-
cally turn off to protect memory contents. Once this happens, you will not be able to
turn power back on, and there is the danger that memory contents will be corrupted
or lost entirely.
P.6
P.172

Basic Calculations
In the RUN Mode you can perform arithmetic calculations (addi-
tion, subtraction, multiplication, division) as well as calculations in-
volving scientific functions.
1. Addition and Subtraction
2. Multiplication
3. Division
4. Quotient and Remainder Division
5. Mixed Calculations
6. Other Useful Calculation Features
7. Using Variables
8. Fraction Calculations
9. Selecting Value Display Modes
10. Scientific Function Calculations
Chapter 2

14
Basic Calculations Chapter 2
1. Addition and Subtraction
Example 6.72 + 9.08
g.hc+j.aiw
You can input the operation just as it is written. This capability is called “true alge-
braic logic.”
Be sure to press Ato clear the display before starting a new calculation.
2. Multiplication
Example 3.71 !4.27
Ad.hb*
e.chw
• The range of this calculator is –9.99999999 !1099 to +9.99999999 !1099.
3. Division
Example 64 ÷4
Age/ew
Parentheses also come in handy when performing division. For full details on using
parentheses, see “Parentheses Calculation Priority Sequence”.
P.17

15
Basic Calculations Chapter 2
uu
uu
uTo use parentheses in a calculation
2 !3 + 4
Example 1 –––––––
5
You should input this calculation as: (2 !3 + 4) ÷5
A(c*d+e)/fw
6
Example 2 –––––
4!5
You can input this calculation as: 6 ÷(4 !5) or 6 ÷4 ÷5.
Ag/(e*f)w
Ag/e/fw
4. Quotient and Remainder Division
This calculator can produce either the quotient or the quotient and remainder of
division operations involving two integers. Use Kto display the Option Menu for
the function key menu you need to perform quotient and remainder division.
Operation
Use the RUN Mode for quotient and remainder division.
Quotient Division ....... <integer>K2(CALC)2(Int÷)<integer>w
Reminder Division ..... <integer>K2(CALC)3(Rmdr)<integer>w
uu
uu
uTo perform quotient division
Example To display the quotient produced by 61 ÷7
AgbK2(CALC)
1234

16
Basic Calculations Chapter 2
2(Int÷)hw
• Remember that you can use only integers in quotient division operations. You
cannot use expressions such as 2 or sin60 because their results have a decimal
part.
uu
uu
uTo perform remainder division
Example To display the remainder produced by 857 ÷48
ifh3(Rmdr)eiw
Press Qto clear the Option Menu after you finish your remainder and quotient
calculations.
• Remember that you can use only integers in remainder division operations. You
cannot use expressions such as 2 or sin60 because their results have a decimal
part.
• Quotient and remainder division can also be used with lists to divide a multiple
integers by each other in a single operation.
5. Mixed Calculations
(1) Mixed Arithmetic Calculation Priority Sequence
For mixed arithmetic calculations, the calculator automatically performs multiplica-
tion and division before addition and subtraction.
Example 1 3 + 5 !6
Ad+f*gw
Example 2 7 !8 – 4 !5
Ah*i-e*fw
1234
1234
P.89

17
Basic Calculations Chapter 2
(2) Parentheses Calculation Priority Sequence
Expressions enclosed inside parentheses are always given priority in a calculation.
Example 1 100 – (2 + 3) !4
Abaa-(c+d)
*ew
Example 2 (7 – 2) !(8 + 5)
• A multiplication sign immediately in front of an open parenthesis can be omitted.
A(h-c)(i+f)
w
• Any closing parentheses at the end of a calculation can be omitted, no matter
how many there are.
Parentheses are always closed in the operation examples presented in this manual.
(3) Negative Values
Use the -key to input negative values.
Example 56 !(–12) ÷(–2.5)
Afg*-bc/
-c.fw
(4) Exponential Expressions
Use the Ekey to input exponents.
Example (4.5 !1075) !(–2.3 !10–79)
Ae.fEhf*-c.d
E-hjw
The above shows what would appear when the exponential display range is set to
Norm 1. It stands for –1.035 !10–3, which is –0.001035.
P.10