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 kaweedeshani on August 3rd, 2021
Where Is The Dt Function Of Casio Fx Ms 991 Calculator
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Current Answers
Answer #1: Posted by SonuKumar on August 3rd, 2021 8:06 AM
SonuKumar
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May 9th, 2021 Points: 16,621,300
Member since:
May 9th, 2021 Points: 16,621,300
https://www.youtube.com/watch?v=dTWKLIWtEec
https://www.youtube.com/watch?v=qh126WAoulo
What is DT in Casio calculator?
DT means "Dual Time"
Please respond to my effort to provide you with the best possible solution by using the "Acceptable Solution" and/or the "Helpful" buttons when the answer has proven to be helpful.
Regards,
Sonu
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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 4
... precautions before using this manual handy for a long time (fx-95MS/100MS/570MS). • Use only the type of the calculator by burning it will not get into the hands of small...personal injury.
• The displays and illustrations (such as key markings) shown in personal injury or material damage if ignored. Batteries
• After removing the battery from the calculator, put it in a safe...
User Guide - Page 5
...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 cause slow display response, total failure of the display... of the calculator's case, and damage to internal circuitry.
3 shall not be liable to temperature extremes. Moreover, CASIO Computer Co.,...
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 Function...
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
... calculation formula and its result at the same time.
• The upper line shows the calculation formula. • The lower line shows the result. A separator symbol is displayed every three digits when the integer part of equations
F F 1 EQN
7
Two-line Display
The two-line display makes it possible to the "User's Guide 2 (Additional Functions)" for the fx...
User Guide - Page 11
... the input at the insert cursor position.
• Pressing A K, or = returns to another When you turn off the calculator. Pressing the [ key displays the formula and result of the calculation you perform a calculation, the replay function stores the calculation formula and its result in replay memory. k Making Corrections During Input
• Use e and r to move the...
User Guide - Page 13
A B 3(All) =
Basic Calculations COMP
k Arithmetic Calculations Use the F key to enter the COMP Mode when you reach the setup screen shown below. 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 setup (Disp) screen to specify the symbols you want for the decimal...
User Guide - Page 15
Disp
1
• Display the selection screen. fx-95MS:
1
Other Models: 1 r
• Press the number key (1 or 2) that corresponds to
the setting you want 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 reach the setup screen shown...
User Guide - Page 19
...the value that is displayed causes the displayed value to change to a
17 Note that pressing an operator key while a result is currently on the display (and also stored... Calculations
• You can use the calculation result that is convenient for the exponent. • Answer Memory contents are nine variables (A through F, M, X and Y), which can be used with a subsequent Type A function ...
User Guide - Page 20
... 193.2 Ö 23 ҃ 8.4
193.2 Ö 28 ҃ 6.9 193.2 A j 1 \ 23 = p 1 \ 28 =
Scientific Function Calculations
COMP
Use the F key to enter the COMP Mode when you want to appear on the 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...
User Guide - Page 22
...each time.)
• Example 9: 3π ҃ 9.424777961
3 A x =
• Example 10: To determine how many different 4-member groups can be organized in a group 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...
User Guide - Page 23
.../fx-570MS/
fx-991MS.
θ ҃ 1.047197551
0 o
• Press 0 n to display the value of .
21 D R G
1 2 3
• Pressing 1, 2, or 3 converts the displayed value to the corresponding angle unit.
• Example: To convert 4.25 radians to degrees
q ..... 1(Deg)
4.25 A v 2(R) =
4 . 25r
243.5070629
k Coordinate Conversion (Pol (x, y), Rec (r, θ ))
• Calculation...
User Guide - Page 24
...fx-95MS) F F F 1 (Other Models)
k Quadratic and Cubic Equations
Quadratic Equation: ax2 + bx + c = 0 Cubic Equation: ax3 + bx2 + cx + d = 0 Entering the EQN Mode and pressing r displays... the initial quadratic/cubic equation screen. view other elements.
Deg r ee?
2 3
Use this screen to solve an equation. k Engineering Notation Calculations
• Example 1: ...
User Guide - Page 28
... (fx-95MS) F F 1 (Other Models)
• Always start data input with A B 1(Scl) = to perform statistical calculations using standard deviation. To recall this type of data input up to that point is used to calculate values ...SD Mode when you can recall using the key opera- S
• Input data is indicated on the display (n value).
54 S 51 S 55 S 53 S S 54 S 52 S
Sample Standard Deviation (&#...
User Guide - Page 30
REG F 3 (fx-95MS) F F 2 (Other Models)
• Entering the REG Mode displays screens like the ones shown below. Press 1 if you want to register the ... mode Changing the regression type (Lin, Log, Exp, Pwr, Inv, Quad)
Regression Calculations
REG
Use the F key to enter the REG Mode when you will be unable to display or edit individual data items any of regression you want to use.
1 (Lin) ...
User Guide - Page 35
... capacity of the numeric stack or operator stack is outside the allowable calculation range.
• An attempt to perform a function calculation using . Syntax ERROR • Cause
• An attempt to perform an illegal mathematical operation.
• Action • Press e or r to display the calculation and correct the problem.
See "Error Locator" for details.
Press t to...
User Guide - Page 37
... is so complex that is required when the calculation includes a high-priority Type A function, or power or root operations.
The negative sign (-) is treated as a Type B function, so particular care is
a negative number, the negative number must be enclosed within parentheses. * fx-100MS/fx-115MS/fx-570MS/fx-991MS only. ** fx-570MS/fx-991MS only. • Operations of the matrix stack...
User Guide - Page 40
... can also cause them to turn power on the display of inflection, errors are performed in place with the six screws. 6 Press 5 to the "User's Guide 2 (Additional Functions)." To replace the battery
1 Press A i to become dim. Power Supply (fx-95MS only)
Users of the calculator when the battery is powered by a single AA-size...
User Guide - Page 41
... to the "User's Guide 2 (Additional Functions)." Power Supply: Single AA-size battery (R6P (SUM-3))
Battery Life:
Approximately 17,000 hours continuous display of fx-115MS.
39 Specifications (fx-95MS only)
Users of other models should refer to 104°F)
Important notice for about six minutes. u Auto Power Off
Calculator power automatically turns off .
Dimensions: 19...
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