Casio fx 991MS Support Question
Casio fx 991MS Support Question
Find answers below for this question about Casio fx 991MS - Scientific Display Calculator.Need a Casio fx 991MS manual? We have 1 online manual for this item!
Question posted by philmil on September 3rd, 2014
How To Replace Battery Casio Fx-991ms
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Related Casio fx 991MS Manual Pages
User Guide - Page 1
fx-95MS fx-100MS fx-115MS (fx-912MS) fx-570MS fx-991MS
User's Guide
kfx-912MS owners
Please be sure to read the important notice of this manual. E
http://world.casio.com/edu_e/
User Guide - Page 3
Never slide the display end of the unit into the cover.
.....1
.....2
1 Removing and Replacing the Calculator's Cover
• Before starting .....1 Holding the cover as shown in the illustration, slide the unit out of the cover. • After you are finished .....2 Holding ...
User Guide - Page 4
... result in a safe place where it will not get into the calculator. • Remove the battery if you load it . If accidentally swallowed, consult with a physician immediately.
• Never charge batteries, try to take batteries apart, or allow batteries to use the calculator for a long time (fx-95MS/100MS/570MS). • Use only the type of small...
User Guide - Page 5
... sure to press the 5 key before using the calculator for the first time.
• Even if the calculator is operating normally, replace the battery at least once every three years for the fx115MS/fx-570MS/fx-991MS, or at least once every two years for the fx-95MS/fx-100MS. A dead battery can leak, causing damage to anyone for any...
User Guide - Page 7
... Display Formats 10 kDecimal Point and Separator Symbols 11 k Initializing the Calculator 11
Basic Calculations 11
k Arithmetic Calculations 11 kFraction Operations 12 kPercentage Calculations 14 kDegrees, Minutes, Seconds Calculations 15 kFIX, SCI, RND 15
Memory Calculations 16
kAnswer Memory 16 kConsecutive Calculations 17 kIndependent Memory 17 k Variables 17
Scientific...
User Guide - Page 8
... and
Permutation/Combination 20 kAngle Unit Conversion 21
kCoordinate Conversion (Pol (x, y), Rec (r 21
kEngineering Notation Calculations 22
Equation Calculations 22
kQuadratic and Cubic Equations 22 kSimultaneous Equations 24
Statistical Calculations 26
Standard Deviation 26 Regression Calculations 28
Technical Information 32
kWhen you have a problem 32 kError Messages 32 kOrder of...
User Guide - Page 9
...; The lower line shows the result.
fx-95MS Modes
To perform this type of calculation:
Perform this To enter key operation: this mode:
Basic arithmetic calculations F 1
COMP
Standard deviation
F 2
SD
Regression calculations
F 3
REG
Solution of the mantissa has more than three digits.
Before getting started...
A separator symbol is displayed every three digits when the integer...
User Guide - Page 11
...
• Pressing the e or r key immediately after you finish a calculation displays the editing screen for storage of the calculation you turn off the calculator. Pressing [ again back steps sequentially (new-to-old) through past calculations.
• Pressing the e or r key while a replay memory calculation is on the display changes to another When you last performed. k Making Corrections...
User Guide - Page 13
...calculation mode and setup, and clear replay memory and variables.
fx-95MS:
1 r
Other Models: 1 r r
• Press the number key (1 or 2) that corresponds to
the setting you want to use the display...8226; Negative values inside of times until you reach the setup screen shown below. Disp
1
• Display the selection screen. sin -1.23 → S R D 1.23 T
11 k Decimal Point and ...
User Guide - Page 15
fx-95MS:
1
Other Models: 1 r
• Press the number key (1 or 2) that corresponds to use the display setup (Disp) screen to specify the display format when a fraction calculation result is greater than one.
• To change the fraction display format, press the q key a number of times until you want to
the setting you reach the setup screen...
User Guide - Page 20
...display before starting the next calculation.
• π = 3.14159265359
k Trigonometric/Inverse Trigonometric Functions
• To change the default angle unit (degrees, radians, grads), press the F key a number of times until you want to all of the variables. A B 1(Mcl) =
• Example: 193.2 Ö 23 ҃ 8.4
193.2 Ö 28 ҃ 6.9 193.2 A j 1 \ 23 = p 1 \ 28 =
Scientific...
User Guide - Page 22
...҃ 1.988647795
7 A H 123 =
• Example 4: 123 ѿ 302 ҃ 1023
123 + 30 K =
• Example 5: 123 ҃ 1728
12 N * =
* A N in the case of fx-570MS/fx-991MS.
• Example 6: 1 ҃ 12
1 3
ȕ
1 4
R 3 a , 4 a T a =
• Example 7: 8! ҃ 40320
8 A f =
• Example 8: To generate a random number between
0.000 and 0.999
A M =
0.66400
(The above...
User Guide - Page 23
... (1, 3) to polar coordinates (r,) (Rad)
r ҃ 2
f* 1 P L 3 T =
* A f in the case of fx-100MS/fx-115MS/fx-570MS/ fx-991MS.
k Angle Unit Conversion • Press A v to display the value of r, or 0 o to display the following menu. * A n in the case of fx-100MS/fx-115MS/fx-570MS/
fx-991MS.
θ ҃ 1.047197551
0 o
• Press 0 n to display the value of .
21
User Guide - Page 24
...F key to enter the EQN Mode when you want to three unknowns. Coefficient name
a? k Engineering Notation Calculations
• Example 1: To convert 56,088 meters to kilometers
→ 56.088 ҂103 (km)...
→ 81.25 ҂10 -3 (mg)
0.08125 = J
Equation
EQN
Calculations
The EQN Mode lets you solve equations up to three degrees and simultaneous linear equations with up to solve...
User Guide - Page 28
...display (n value).
54 S 51 S 55 S 53 S S 54 S 52 S
Sample Standard Deviation (σnҀ1) = 1.407885953
A X 3 =
26 To recall this type of data input up to that point is used to calculate... SD
1.
Statistical
SD
Calculations
REG
Standard Deviation
SD
...2 A U 3 A X 1 A X 2 A X 3
• Example: To calculate σnҀ1, σn, o, n, Σx, and Σx2 for n, Σx, Σ...
User Guide - Page 29
... if you
want to perform some other operation (calculation, recall
of statistical calculation results, etc.), you should always press the t key first to exit data display. • Pressing the S key instead of ... U. If this happens, press the = key to replace the old value with the new one. Input the new value and then press the = key to display the screen shown below. To input the data 110 ...
User Guide - Page 30
... input, press A U. • After inputting statistical data in memory. REG F 3 (fx-95MS) F F 2 (Other Models)
• Entering the REG Mode displays screens like the ones shown below. Press 2 to exit data input without saving it in the...type (Lin, Log, Exp, Pwr, Inv, Quad)
Regression Calculations
REG
Use the F key to display or edit any longer after perform either the following operations.
User Guide - Page 37
... is so complex that the capacity of a stack is exceeded. • Matrix calculations use up to their precedence during calculations. Squaring a matrix, cubing a matrix, or inverting a matrix uses one stack level. (fx-570MS, fx-991MS only)
• Example:
1
23
45
123 4
56 7
Numeric Stack 12 23 34 45 54
Command Stack 1҂ 2 3 4ѿ 5҂
6 7ѿ...
User Guide - Page 40
... 10th digit. (In the case of exponential display, calculation error is ±1 at the last significant digit.) Errors are cumulative and may become large. Replacing the Battery Dim figures on the display of the calculator when the battery is low can also cause them to turn power off.
Power Supply (fx-95MS only)
Users of other models should...
User Guide - Page 41
... name) apply to turn power back on.
When this happens, press 5 to the same model. Power Supply: Single AA-size battery (R6P (SUM-3))
Battery Life:
Approximately 17,000 hours continuous display of the fx-912MS should refer to the description of fx-115MS.
39 Owners of flashing cursor. u Auto Power Off
Calculator power automatically turns off .
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