Casio fx-7400G PLUS Bedienungsanleitung
Getting Acquainted
— Read This First!
1
Chapter
: Important notes
: Notes
: Reference pages
The symbols in this manual indicate the
following messages.
P. 000
2
Chapter 1 Getting Acquainted
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 transfer memory contents or
back-up data to another unit.
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
Chapter 1 Getting Acquainted
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.
2. Key Table
5
Getting Acquainted Chapter 1
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Trace Zoom
Sketch
V-Window
6
Chapter 1 Getting Acquainted
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.
RedPress 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[
1234[
1234
8
Chapter 1 Getting Acquainted
uu
uu
uAngle unit (Angle)
1(Deg) ........ Specifies degrees as
default.
2(Rad) ........ Specifies radians as
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. 120
P. 120
1234
1234
1234
1234
Table generation and graph
drawing using list data.
P. 7 5
1234[
9
Getting Acquainted Chapter 1
[
1(List4)
2(List5) ....
3(List6)
Press [to return to the previous menu.
Other menus for set up (Display, Simplfy, 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
Chapter 1 Getting Acquainted
• 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
1.2+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.
1.2–03 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. 2 7
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