Casio FX-991ES Support Question
Casio FX-991ES Support Question
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Question posted by zorptsesas on July 6th, 2014
How To Reset Casio Fx-991es Plus
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Current Answers
Answer #1: Posted by sabrie on July 6th, 2014 9:25 PM
sabrie
Member since:
May 23rd, 2013 Points: 3,306,778
Member since:
May 23rd, 2013 Points: 3,306,778
Related Casio FX-991ES Manual Pages
User Guide - Page 4
... claim of this User's Guide.
Note that this is marked with it means you want to initialize the calculator and return the calculation mode and setup to change without notice. • In no event shall CASIO Computer Co., Ltd.
Example: 1(Setup)
Indicates the menu item that this operation also clears all data currently...
User Guide - Page 5
... personal injury.
• Always make sure that can cause certain components to suddenly burst, creating the risk of the calculator by incineration.
• Improperly using this calculator. Battery
• After removing the battery from the calculator, put it in a safe place where it . Doing so can result in
this manual handy for this...
User Guide - Page 6
...use and storage of humidity and dust. Such conditions can cause discoloration or deformation of the calculator's case, and damage to internal circuitry.
• Avoid use thinner, benzene or other...power can cause slow display response, total failure of the display, and shortening of the calculator.
Very low temperatures can cause memory contents to large amounts of water and a mild...
User Guide - Page 7
...; Press O to turn on the display.
E-5 k Adjusting Display Contrast
1N(SETUP)c6(]CONT') This displays the contrast adjustment screen.
Replace the battery. Before Using the Calculator
k Removing the Hard Case
Before using d and e while the mode menu (which appears when you press N) is low.
User Guide - Page 8
...format. The alpha input mode will disappear when you press a key. k About the Display
Your calculator has a 31-dot × 96-dot LCD screen. The alpha input mode has been entered by... to the variable. This indicator appears after you press 1t(STO). The calculator is in the CMPLX Mode. Calculation history memory data is available and can be exited and this indicator will be...
User Guide - Page 9
... the number key that takes a long time to execute, the display may show only the above indicators (without any value) while it performs the calculation internally. k Configuring the Calculator Setup
Pressing 1N(SETUP) displays the setup menu, which you want to select. • To select the CMPLX Mode, for example, press 2.
c
f
E-7 Select...
User Guide - Page 11
... a dot ( ). only. • Norm: Selecting one of the STAT Mode STAT editor screen on or off. The decimal point for input values is applied for calculation results
.
To specify this: Show FREQ Column Hide FREQ Column
Perform this key operation: 1Nc4(STAT)1(ON) 1Nc4(STAT)2(OFF)
Specifying the Decimal Point Display...
User Guide - Page 12
...open parenthesis ( ( ) character. Example: 2 (5 + 4) - 2 × (-3) =
LINE
2(5+4)2*y3=
Inputting a Function with Parenthesis
When you input any of =. Inputting Expressions and Values
k Inputting a Calculation Expression Using Standard Format
Your calculator lets you need to this: COMP MthIO Deg Norm1 d/c a+bi OFF Dot
• To cancel initialization without doing anything, press A(Cancel...
User Guide - Page 13
... a variable name, constant, or random number:
20 × A, 2 × π, 2 × i, etc. At this time, you can omit the multiplication sign (×) in any of a calculation, immediately before the = key is pressed.
Example: sin 30 =
LINE
s30)=
Pressing s inputs "sin(".
• Note that the input procedure is different if you want...
User Guide - Page 15
... correct the expression 369 × × 12 so it becomes
369 × 12 LINE Insert Mode:
369**12
dd
Y Overwrite Mode:
369**12
ddd
Y
Correcting a Calculation Example: To correct cos(60) so it becomes sin(60) LINE Insert Mode:
c60)
dddY
s Overwrite Mode:
c60)
dddd
s Inserting Input into...
User Guide - Page 16
...
When inputting with the cursor positioned at the error location. Further input will become impossible if the height of the calculation you are inputting exceeds the allowable limit.
• Nesting of the calculation where the error occurred, with Math format, you press =, press d or e. E-14
d1
=
You can cause the height of...
User Guide - Page 17
... Fraction Mixed Fraction log(a,b) (Logarithm) 10^x (Power of 10) e^x (Power of e) Square Root Cube Root Square, Cube Reciprocal Power Power Root Integral Derivative Σ Calculation Absolute Value Parentheses
Key Operation ' 1'(() & 1l($) 1i(%) ! 1!(#) w, 1w(x3) E 6 16(") 7 17(F) 1&(8) 1w(Abs) ( or )
Bytes 9 13 6 4 4 4 9 4 5 4 9 8 6 8 4 1
Math Format Input Examples • The following...
User Guide - Page 18
Example 3: To input (1 + 2 )2 × 2 =
5
MATH
Math
(1+'2c5e)
w*2=
• When you press = and obtain a calculation result using Math format, you can incorporate part of the expression you need to use them. Incorporating a Value into a Function When using Math format, part ...
User Guide - Page 19
...
1
!2e+!8=
Math
2
!2e+!81=
E-17 Original Expression:
Function Key Operation
Integral
7
Resulting Expression
Derivative
17(F)
Σ Calculation 1&(8)
You can also incorporate values into the following functions. 1l($), 1i(%), !, 6, 1!(#), 1w(Abs)
Displaying Calculation Results in a Form that Includes '2, π, etc. (Irrational Number Form)
When "MthIO" is selected for the input...
User Guide - Page 20
... ranges for which ' form (form that include square root symbols can be displayed in the CMPLX Mode, the following are the calculations for which ' form is also counted as a term). ' form calculation results use display formats like those shown
below.
± a'b , ± d ± a'b , ± a'b ± d'e cf
E-18 Angle Unit Setting Deg Rad...
User Guide - Page 21
... decimal form
The underlined areas in the above examples indicate what caused decimal form to a common denominator. More than two terms in the calculation result
• Calculation results displayed in decimal form even when any intermediate result has three or more terms.
Example: (1 + '2 + '3 )(1 - '2 - '3 )(= -4 - 2'6 ) = -8.898979486
E-19 a'b + c
d'e f
→
a′'b + d′...
User Guide - Page 22
... and Number of Significant Digits You can specify a fixed number of Display Digits". All calculations in this section are performed in decimal form.
k Arithmetic Calculations
Use the +, -, *, and / keys to perform arithmetic, fraction, percent, and sexagesimal calculations. Example: 1 ÷ 6 =
LINE
Initial default setting (Norm1)
FIX
3 decimal places (Fix3)
SCI
3 significant digits...
User Guide - Page 26
... mode or the input/output format, or perform any reset operation.
• Calculation history memory is limited.
Modes that calculation history memory contents are cleared whenever you turn off the calculator, press the O key, change to back-step through calculation history memory contents.
Replay Function While a calculation result is deleted automatically to edit the expression you...
User Guide - Page 75
CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan
SA0411-B Printed in China
Appendix - Page 52
CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan
SA0411-B
Printed in China Imprimé en Chine
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