Casio FX-991ES Support Question
Casio FX-991ES Support Question
Find answers below for this question about Casio FX-991ES.Need a Casio FX-991ES manual? We have 2 online manuals for this item!
Question posted by gauravpdl00 on June 30th, 2022
Calculator (casio-fx-99es Plus) Automatically Resets
Whenever I type something in my calculator, it shuts of for some seconds. After it turns on, it is reseted or cleared. Help please
Current Answers
Answer #1: Posted by SonuKumar on July 12th, 2022 7:58 AM
SonuKumar
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Related Casio FX-991ES Manual Pages
User Guide - Page 4
...operation is indicated as shown in the illustration nearby. Moreover, CASIO Computer Co., Ltd.
REPLAY
• The displays and ...Appendix. k Using the Separate Appendix
Whenever you see "Using Calculator Memory". Note that is selected by any kind whatsoever by the...use of this product and items that this operation also clears all data currently in the Appendix: Deg : Specify ...
User Guide - Page 5
...; Improperly using this manual.
Battery
• After removing the battery from the calculator, put it in a safe place where it will not get into the
calculator. • Use only the type of small children.
E-3 Keep this manual handy for this calculator in personal injury or material damage if ignored. Never expose the battery to...
User Guide - Page 6
... the display, and shortening of this unit discharges slightly during shipment and storage. Wring out all important data.
• Avoid use and storage of the calculator in a weak solution of humidity and dust. A dead battery can cause memory contents to large amounts of water and a mild neutral household detergent. Never leave...
User Guide - Page 7
... the mode menu (which appears when you want, press A.
• You can also adjust contrast using the calculator, slide its hard case downwards to remove it probably means that battery power is on the calculator. • Press 1A(OFF) to turn off the calculator.
k Turning Power On and Off
• Press O to adjust display contrast.
User Guide - Page 8
... default angle unit is degrees. The display currently shows an intermediate result of significant digits is more data above/below the current screen.
The calculator is standing by for input of a variable name to assign a value to recall the variable's value. This indicator appears after you press a key. The default ...
User Guide - Page 9
...• For a very complex calculation or some other type of a number table based on an expression Vector calculations
Specifying the Calculation Mode (1) Press N to control how the calculations are executed and displayed. Select this type of operation: General calculations Complex number calculations Statistical and regression calculations Calculations involving specific number systems (binary...
User Guide - Page 10
...: 100 ÷ 7 = 14.286 (Fix3) 14.29 (Fix2)
• Sci: The value you specify (from 1 to 9) controls the number of significant digits for displayed calculation results. Calculation results are rounded off to be displayed as the default
angle unit:
Perform this key operation:
Degrees
1N3(Deg)
Radians
1N4(Rad)
Grads 90°...
User Guide - Page 12
... d/c a+bi OFF Dot
• To cancel initialization without doing anything, press A(Cancel) instead of =. Next, you input calculation expressions just as shown below , it .The calculator automatically judges the calculation priority sequence for addition, subtraction, multiplication, and division, functions, and parentheses.
Example: 2 (5 + 4) - 2 × (-3) =
LINE
2(5+4)2*y3=
Inputting...
User Guide - Page 14
...12
LINE
369*13
Y
2
E-12
The procedure you input replaces the character at a convenient point and
calculate the result. Changing the Character or Function You Just Input
Example: To correct the expression 369 ×.... • The initial default for more information. • The calculator automatically changes to the insert mode whenever you change to the overwrite mode.
User Guide - Page 22
... to perform arithmetic calculations. For more information, see "Calculation Priority Sequence".
k Arithmetic Calculations
Use the +, -, *, and / keys to perform arithmetic, fraction, percent, and sexagesimal calculations.
Example: 7 × 8 - 4 × 5 = 36
LINE
7*8-4*5=
• The calculator automatically judges the calculation priority sequence.
All calculations in this section...
User Guide - Page 23
... of digits used for a mixed fraction (including integer, numerator, denominator, and separator symbols) is greater than 10, the value is automatically displayed in decimal format.
• The result of a calculation that is true only in decimal format. Math Format
Improper Fraction
Mixed Fraction
7 3
2
1 3
('7c3) (1'(()2e1c3)
7 { 3
2 { 1 { 3
Linear Format
Numerator Denominator Integer...
User Guide - Page 26
... memory: COMP (N1), CMPLX (N2), BASE-N (N4)
Recalling Calculation History Memory Contents Press f to edit the expression you are performing causes calculation history memory to become full, the oldest calculation is deleted automatically to the calculation mode or the input/output format, or perform any reset operation.
• Calculation history memory is on the display, you can...
User Guide - Page 27
...second calculation immediately after pressing A, press the G key. In this case, however, the imaginary part will be cleared from independent memory. E-25
Independent Memory
Calculation results can be added to another calculation... Memory contents are not change the calculation mode, or turn off the calculator.
• If a CMPLX Mode calculation produces a complex number result, both...
User Guide - Page 28
...
LINE
123+456=
789-G=
k Independent Memory (M)
You can add calculation results to or subtract results from independent memory
Recall current independent memory ...Independent memory contents are maintained even if you can also insert the M variable into a calculation, which tells the calculator to use the current independent memory contents at that location. Independent Memory Overview •...
User Guide - Page 29
... and causes the "M" indicator to clear the contents of Answer Memory, independent memory, and all of variable B Sy(A)*Se(B)=
• Variable contents are maintained even if you want to check the contents of the variable whose contents you press the A key, change the calculation mode, or turn off the calculator. Example: To multiply the...
User Guide - Page 35
... . Note that corresponds to degrees: π radians = 90°, 50 grads = 45° 2
The following values to the angle unit of the input value. The calculator will automatically convert it to display the angle unit specification menu shown below.
User Guide - Page 43
...960;:
The following are normally expressed in radians.
• After obtaining a calculation result in decimal form, it to decimal form by pressing the f key...transform from decimal form to standard form, the calculator automatically decides the standard form to use. You cannot specify the standard form. When the original calculation result is limited to inverse trigonometric function results ...
User Guide - Page 48
...)
Precautions Concerning Sample Data Storage Sample data you input is deleted automatically whenever you will not work if the maximum number of lines allowed for the STAT editor screen are not allowed on the calculator's setup screen. E-46 Statistical
Display
OFF
Statistic Type
(No FREQ column)
Single-variable
80 lines
Paired-variable
40...
User Guide - Page 73
...are using the correct mode for the type of these steps. (1) Check the calculation expression to the next step. Perform ...calculation functions are trying to perform a routine that you should make sure that it automatically initializes the calculation mode and clears memory contents.
This will not be able to be cleared. Important!
• Removing the button battery from the calculator...
User Guide - Page 74
... the calculator
Button Battery: G13 Type (LR44) × 1
Battery Life: Approximately 3 years (Based on one hour of operation per day.)
Operating Temperature: 0°C to turn the calculator back on power while replacing the battery, slide the hard case onto the front of the calculator.
1 Press 1A(OFF) to turn off automatically if you do not accidentally turn on...
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