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 raghavendra2059 on December 10th, 2014
What Is The Processor Used In Casio 991ms
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Current Answers
Answer #1: Posted by TechSupport101 on December 10th, 2014 10:46 PM
TechSupport101
Member since:
May 24th, 2013 Points: 12,171,285
Member since:
May 24th, 2013 Points: 12,171,285
Hi. The unit must have an MCU as opposed to a CPU - a Micro-Controller Unit. Read more here
https://www.sinister.ly/Thread-what-is-the-size-of-memory-of-casio-fx-991MS-calculator
https://www.sinister.ly/Thread-what-is-the-size-of-memory-of-casio-fx-991MS-calculator
Related Casio fx 991MS Manual Pages
User Guide - Page 4
... it in a safe place where it will not get into the calculator. • Remove the battery if you do not plan to use the calculator for a long time (fx-95MS/100MS/570MS). • Use only the type of battery specified for this calculator in this User's Guide are facing correctly when you load it . Doing so...
User Guide - Page 5
...cause slow display response, total failure of the display, and shortening of the calculator's case, and damage to anyone for special, collateral, incidental, or consequential damages in the calculator.
&#... 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...
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 10
... the main title of the mode you need to input more information about using the g key.
8 See "Answer Memory" for more than twice displays additional setup screens. k Input Capacity
• The memory area used to perform the calculations being described is taken up to the initial defaults shown below, press A B 2(Mode) =. Whenever you know...
User Guide - Page 11
... something while the insert cursor is on the display changes to the editing screen.
• Pressing the e or r key immediately after you finish a calculation displays the editing screen for storage of both expressions... time you initialize modes and settings by any of the calculation you last performed. k Making Corrections During Input
• Use e and r to move the cursor to the location ...
User Guide - Page 12
... selection screen that appears, press 1 to 10 digits.
k Exponential Display Formats
This calculator can select between two formats that determine at what point exponential notation is used for integer values with more than 10 digits and decimal values with more smaller expressions, which are automatically displayed using the Norm 1 format.
10 k Multi-statements
A multi-statement...
User Guide - Page 13
... the COMP Mode when you
want to perform basic calculations. COMP F 1 • Negative values inside of times until 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...
User Guide - Page 14
...2: 5҂(9ѿ7) ҃ 80 5 -
uDecimal ↔ Fraction Conversion
• Use the operation shown below to convert calculation results between decimal values and fraction values.
• Note that mix fraction and decimal ...not necessary to perform.
12 k Fraction Operations uFraction Calculations
• Values are displayed in decimal format automatically whenever the total number of...
User Guide - Page 15
...8596;
5 3
1 C 2 C 3 =
1 2 3.00
A B
5 3.00
A B
1 2 3.00
• You can use .
1(ab/c): Mixed fraction 2(d/c): Improper fraction
13 fx-95MS:
1
Other Models: 1 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 display format when a fraction calculation result is greater than one.
• To change the...
User Guide - Page 16
..., 98, and 734 by
20%
(800)
168 + 98 + 734 = g A j 1
p 1 - 20 A v , * As shown here, if you want to use the variable in the mark up or discount calculation, you try to input a mixed fraction while the d/c display format is increased from 40 to 46?
• An error occurs if you need to assign the...
User Guide - Page 17
...
• Example 2: To perform the following calculation: 12°34'56" ҂ 3.45 12 I 34 I 56 I - 3.45 = 43°24°31.2
k FIX, SCI, RND
• To change the settings for the number of decimal places, the number of significant digits, or the exponential display format, press the F key a number of times...
User Guide - Page 18
... the F key to enter the COMP Mode when you want to perform a calculation using the specified number of decimal places.
200 \ 7 =
28.57100
(Internal rounding)
A Q
28.57100
- 14 =
399.99400
• Press F ..... 3(Norm) 1 to clear the Fix specification.
• Example 2: 1 Ö 3, displaying result with two significant digits (Sci 2)
F..... 2(Sci) 2 1 \ 3 =
SCI
3.3-01
• Press...
User Guide - Page 19
... Ans, indicating it is the value that is currently on the display (and also stored in an error. k Consecutive Calculations
• You can use the calculation result that pressing an operator key while a result is convenient for calculating cumulative totals.
• Independent memory uses the same memory area as the first value of the above key...
User Guide - Page 20
... that corresponds to the angle unit you want to appear on the display before starting the next calculation.
• π = 3.14159265359
k Trigonometric/Inverse Trigonometric Functions...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 clear the values assigned to use. (90° = π radians = 100 grads) 2 18 ...
User Guide - Page 23
* 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 r, or 0 o to display the value of fx-100MS/fx-115MS/fx-570MS/ fx-991MS.
k Angle Unit Conversion • Press A v to polar coordinates (r,) (Rad)
r ҃ 2
f* 1 P L 3 T =
* A f in the case of .
21
D R G
1 2 3
• Pressing 1, 2, or ...
User Guide - Page 24
...10 -3 (mg)
0.08125 = J
Equation
EQN
Calculations
The EQN Mode lets you want to solve an equation.
Element value 22 view other elements. Use the F key to enter the EQN Mode when ... F 1 (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...
User Guide - Page 25
... (c for a quadratic equation, d for a cubic equation), you can cause calculation to take more
time.
• Example 1: To solve the equation x3 - 2x2 - Variable name
x1=
Arrow indicates
direction you input a value for the final coefficient. Use [ and ] to move between coefficients on the display. Pressing the t key at this point returns to the...
User Guide - Page 28
... memory.
• Input data using the key sequence shown below.
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 (σnҀ1) = 1.407885953
A X 3 =
26
SD F 2 (fx-95MS) F F 1 (Other Models)
• Always start data input with A B 1(Scl) = to perform statistical calculations using standard deviation.
User Guide - Page 29
... as described above, scrolling through data you want to perform some other operation (calculation, recall
of statistical calculation results, etc.), you should always press the t key first to specify the ... separate screen for data storage. If you input multiple entries of the same data using A G to exit data display. • Pressing the S key instead of = after inputting data is no
memory...
User Guide - Page 40
... low can also cause them to the "User's Guide 2 (Additional Functions)." Continued use of the calculator when the battery is powered by a single AA-size battery.
* For a single calculation, calculation error is ±1 at the 10th digit. (In the case of exponential display, calculation error is ±1 at the last significant digit.) Errors are cumulative in...
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