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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.
http://world.casio.com/edu_e/
E
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CASIO ELECTRONICS CO., LTD. Unit 6, 1000 North Circular Road, London NW2 7JD, U.K.
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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 the cover as shown in the illustration, slide the unit out of the cover. •Always slide the keyboard end of the unit into the cover first. Never slide the display end of the unit into the cover. .....1 .....2 1
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Safety Precautions Be sure to read the following safety precautions before using this calculator. Keep this manual handy for later ref- erence. Caution This symbol is used to indicate information that can result in personal injury or material damage if ignored. Batteries •After removing the battery from the calculator, put it in a safe place where it will not get into the hands of small children and accidentally swallowed. •Keep batteries out of the reach of small children. If accidentally swall
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only, and may differ somewhat from the actual items they represent. • The contents of this manual are subject to change with- out notice. •In no event shall CASIO Computer Co., Ltd. be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of the purchase or use of these materials. Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim of any kind whatsoever against the use of these materials by any other party. Handling Pre
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•Avoid use and storage in areas subjected to large amounts of humidity and dust. Take care never to leave the calculator where it might be splashed by water or exposed to large amounts of hu- midity or dust. Such conditions can damage internal cir- cuitry. •Never drop the calculator or otherwise subject it to strong impact. •Never twist or bend the calculator. Avoid carrying the calculator in the pocket of your trou- sers or other tight-fitting clothing where it might be sub- jected to twisting
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Contents Removing and Replacing the Calculator’s Cover................................... 1 Safety Precautions .................................. 2 Handling Precautions ............................. 3 Two-line Display ...................................... 7 Before getting started... .......................... 7 kModes .................................................................... 7 kInput Capacity ........................................................ 8 kMaking Corrections During Input
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kCommon and Natural Logarithms/ Antilogarithms ...................................................... 19 kSquare Roots, Cube Roots, Roots, Squares, Cubes, Reciprocals, Factorials, Random Numbers, π, and Permutation/Combination .................................... 20 kAngle Unit Conversion ......................................... 21 kCoordinate Conversion (Pol (x, y), Rec (r, )) ..... 21 kEngineering Notation Calculations ...................... 22 Equation Calculations .........................
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Two-line Display The two-line display makes it possible to view both the 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 the mantissa has more than three dig- its. Before getting started... k Modes Before starting a calculation, you must first enter the cor- rect mode as indicated in the table below. • The following table shows the mo
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•Pressing the F key more than twice displays additional setup screens. Setup screens are described in the sec- tions of this manual where they are actually used to change the calculator setup. •In this manual, the name of the mode you need to enter in order to perform the calculations being described is indicated in the main title of each section. Example: Equation EQN Calculations Note! •To return the calculation mode and setup to the initial defaults shown below, press A B 2(Mode) =. Calculati
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k Making Corrections During Input •Use e and r to move the cursor to the location you want. •Press [ to delete the number or function at the current cursor position. •Press A K to change to an insert cursor t. Inputting something while the insert cursor is on the display in- serts the input at the insert cursor position. •Pressing A K, or = returns to the normal cursor from the insert cursor. k Replay Function •Every time you perform a calculation, the replay function stores the calculation form
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k Multi-statements A multi-statement is an expression that is made up of two or more smaller expressions, which are joined using a colon ( : ). • Example: To add 2 + 3 and then multiply the result by 4 2+3 2 + 3 p \ g - 4 = 5.Disp Ans×4 = 20. k Exponential Display Formats This calculator can display up to 10 digits. Larger values are automatically displayed using exponential notation. In the case of decimal values, you can select between two formats that determine at what point exponential notat
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k Decimal Point and Separator Symbols You can use the display setup (Disp) screen to specify the symbols you want for the decimal point and 3-digit sepa- rator. •To change the decimal point and separator symbol set- ting, press the F key a number of times until you reach the setup screen shown below. Disp 1 •Display the selection screen. 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. 1(Dot): Period decimal point, comma separator
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• It is not necessary to enclose a negative exponent within parentheses. –5 sin 2.34 10 → S 2.34 e D 5 –9 –8 • Example 1: 3(510 ) 1.510 3 - 5 e D 9 = • Example 2: 5(97) 80 5 - R 9 + 7 T = •You can skip all T operations before =. k Fraction Operations uFraction Calculations •Values are displayed in decimal format automatically whenever the total number of digits of a fractional value (integer + numerator + denominator + separator marks) exceeds 10. 2 1 13 • Example 1:
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3 • Example 1: 2.75 2 (Decimal → Fraction) 4 2.75 = 2.75 00 C 2 3 4. 11 00 A B 11 4. 4 1 • Example 2: ↔ 0.5 (Fraction ↔ Decimal) 2 00 1 C 2 = 1 2. 00 C 0.5 00 C 1 2. uMixed Fraction ↔ Improper Fraction Conversion 2 5 • Example: 1 ↔ 3 3 00 1 C 2 C 3 = 1 2 3. 00 A B 5 3. 00 A B 1 2 3. •You can 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 numbe
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• An error occurs if you try to input a mixed fraction while the d/c display format is selected. k Percentage Calculations • Example 1: To calculate 12% of 1500 (180) 1500 - 12 A v • Example 2: To calculate what percentage of 880 is 660 (75%) 660 \ 880 A v • Example 3: To add 15% onto 2500 (2875) 2500 - 15 A v + • Example 4: To discount 3500 by 25% (2625) 3500 - 25 A v , • Example 5: To discount the sum of 168, 98, and 734 by 20% (800) 168 + 98 + 734 = g A j 1 p 1 - 20 A v , * *As shown here
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k Degrees, Minutes, Seconds Calculations •You can perform sexagesimal calculations using degrees (hours), minutes, and seconds, and convert between sexagesimal and decimal values. • Example 1: To convert the decimal value 2.258 to a sexagesimal value and then back to a decimal value 2.258 = 2.258 A O 2°15°28.8 I 2.258 • 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
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(Internal calculation continues 00 200 \ 7 = 28.571 using 12 digits.) 00 - 14 = 400.000 The following performs the same calculation using the specified number of decimal places. 00 200 \ 7 = 28.571 00 (Internal rounding) A Q 28.571 00 - 14 = 399.994 ..... •Press F 3(Norm) 1 to clear the Fix specifica- tion. • Example 2: 1 3, displaying result with two significant digits (Sci 2) SCI ..... (Sci) F 2 2 1 \ 3 = –01 3.3 ..... •Press F 3(Norm) 1 to clear the Sci specifica- tion. COMP Memory
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•You can recall Answer Memory contents by pressing g. •Answer Memory can store up to 12 digits for the mantissa and two digits for the exponent. • Answer Memory contents are not updated if the opera- tion performed by any of the above key operations re- sults in an error. k Consecutive Calculations •You can use the calculation result that is currently on the display (and also stored in Answer Memory) as the first value of your next calculation. Note that pressing an operator key while a result i
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particular variable: 0 A j 1. This operation de- letes the data assigned to variable A. •Perform the following key operation when you want to clear the values assigned to all of the variables. A B 1(Mcl) = • Example: 193.2 23 8.4 193.2 28 6.9 193.2 A j 1 \ 23 = p 1 \ 28 = Scientific Function COMP Calculations Use the F key to enter the COMP Mode when you want to perform basic arithmetic calculations. COMP .............................................................F 1 • Certain types o
