fx-82MS fx-83MS fx-85MS fx-270MS fx-300MS fx-350MS User's Guide E http://world.casio.
CASIO ELECTRONICS CO., LTD. Unit 6, 1000 North Circular Road, London NW2 7JD, U.K.
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 .....
Safety Precautions Be sure to read the following safety precautions before using this calculator. Keep this manual handy for later reference. 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.
• The contents of this manual are subject to change without 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.
• 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 trousers or other tight-fitting clothing where it might be subjected to twisting or bending. • Never try to take the calculator apart. • Never press the keys of the calculator with a ballpoint pen or other pointed object. • Use a soft, dry cloth to clean the exterior of the calculator.
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 ............
kCommon and Natural Logarithms/ Antilogarithms ...................................................... 19 kSquare Roots, Cube Roots, Roots, Squares, Cubes, Reciprocals, Factorials, Random Numbers, π, and Permutation/Combination ......................... 19 kAngle Unit Conversion ......................................... 20 kCoordinate Conversion (Pol (x, y), Rec (r, )) ..... 20 kEngineering Notation Calculations ....................... 21 Statistical Calculations .........................
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 digits. Before getting started... k Modes Before starting a calculation, you must first enter the correct mode as indicated in the table below.
Note! • To return the calculation mode and setup to the initial defaults shown below, press A B 2(Mode) =. Calculation Mode: Angle Unit: Exponential Display Format: Fraction Display Format: Decimal Point Character: COMP Deg Norm 1 a b/c Dot • Mode indicators appear in the upper part of the display. • Be sure to check the current calculation mode (SD, REG, COMP) and angle unit setting (Deg, Rad, Gra) before beginning a calculation.
k Replay Function • Every time you perform a calculation, the replay function stores the calculation formula and its result in replay memory. Pressing the [ key displays the formula and result of the calculation you last performed. Pressing [ again back steps sequentially (new-to-old) through past calculations. • Pressing the e or r key while a replay memory calculation is on the display changes to the editing screen.
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 notation is used. • To change the exponential display format, press the F key a number of times until you reach the exponential display format setup screen shown below. F i x Sc i No r m 1 2 3 • Press 3.
• Press the number key ( 1 or 2) that corresponds to the setting you want to use. 1(Dot): Period decimal point, comma separator 2(Comma): Comma decimal point, period separator k Initializing the Calculator • Perform the following key operation when you want to initialize the calculation mode and setup, and clear replay memory and variables. A B 3(All) = Basic Calculations COMP k Arithmetic Calculations Use the F key to enter the COMP Mode when you want to perform basic calculations. COMP .............
• Example 1: 13 2 1 15 3 5 2C3+1C5= 13 15.00 1 2 11 • Example 2: 3 1 4 4 3 12 3C1C4+ 1C2C3= 2 1 • Example 3: 4 2 1 • Example 4: 1.6 2.1 2 4 11 12.00 2C4= 1 C 2 + 1.6 = • Results of calculations that mix fraction and decimal values are always decimal. uDecimal ↔ Fraction Conversion • Use the operation shown below to convert calculation results between decimal values and fraction values. • Note that conversion can take as long as two seconds to perform. • Example 1: 2.
uMixed Fraction ↔ Improper Fraction Conversion • Example: 1 2 5 ↔ 3 3 1C2C3= 1 2 3.00 AB 5 3.00 AB 1 2 3.00 • 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 number of times until you reach the setup screen shown below. Disp 1 • Display the selection screen. 1 • Press the number key ( 1 or 2) that corresponds to the setting you want to use.
• 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, if you want to use the current Answer Memory value in a mark up or discount calculation, you need to assign the Answer Memory value into a variable and then use the variable in the mark up/discount calculation. This is because the calculation performed when v is pressed stores a result to Answer Memory before the , key is pressed.
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 until you reach the setup screen shown below. F i x Sc i No r m 1 2 3 • Press the number key ( 1, 2, or 3) that corresponds to the setup item you want to change.
Memory Calculations COMP Use the F key to enter the COMP Mode when you want to perform a calculation using memory. COMP ............................................................. F 1 k Answer Memory • Whenever you press = after inputting values or an expression, the calculated result automatically updates Answer Memory contents by storing the result.
• Example: 23 + 9 A j 3 (M+) 23 9 32 53 6 47 53 , 6 | ) 45 2 90 45 - 2 A { –11 0 3 (M+) (Total) k Variables • There are nine variables (A through F, M, X and Y), which can be used to store data, constants, results, and other values. • Use the following operation to delete data assigned to a particular variable: 0 A j 1. This operation deletes the data assigned to variable A. • Perform the following key operation when you want to clear the values assigned to all of the variables.
k Trigonometric/Inverse Trigonometric Functions • To change the default angle unit (degrees, radians, grads), press the F key a number of times until you reach the angle unit setup screen shown below. Deg Rad G r a 1 2 3 • Press the number key ( 1, 2, or 3 ) that corresponds to the angle unit you want to use. (90° = π 2 radians = 100 grads) • Example 1: sin 63°52 41 0.897859012 q ..... 1 (Deg) S 63 I 52 I 41 I = • Example 2: cos ( • Example 3 : cos 1 π rad 0.5 3 ) q .....
k Common and Natural Logarithms/ Antilogarithms • Example 1: log 1.23 0.089905111 R 1.23 = • Example 2: In 90 (= loge 90) = 4.49980967 T 90 = TpP= ln e 1 • Example 3: e10 22026.46579 A U 10 = • Example 4: 10 31.6227766 A Q 1.5 = • Example 5: 2 3 0.125 2WD3= 1.5 RD2TW4= • Example 6: ( 2)4 16 • Negative values inside of calculations must be enclosed within parentheses. For details, see “Order of Operations.
• Example 8: To generate a random number between 0.000 and 0.999 AM= 0.66400 (The above value is a sample only. Results differ each time.) • Example 9: 3π 9.424777961 3Ax= • Example 10: To determine how many different 4-digit values can be produced using the numbers 1 through 7 • Numbers cannot be duplicated within the same 4-digit (840) value (1234 is allowed, but 1123 is not).
• Example 2: To convert rectangular coordinates (1, 3) to polar coordinates (r, ) (Rad) r 2 f1P L3T= 0o θ 1.047197551 • Press 0 n to display the value of r, or 0 o to display the value of . k Engineering Notation Calculations • Example 1: To convert 56,088 meters to kilometers → 56.088 10 3 (km) 56088 = J • Example 2: To convert 0.08125 grams to milligrams → 81.25 10 –3 (mg) 0.
To recall this type of value: Perform this key operation: Σx2 Σx n o σn σn-1 AU1 AU2 AU3 AX1 AX2 AX3 • Example: To calculate σn 1, σn, o, n, Σx, and Σx2 for the following data : 55, 54, 51, 55, 53, 53, 54, 52 In the SD Mode: A B 1 (Scl) = (Stat clear) 55 S n= SD 1. Each time you press S to register your input, the number of data input up to that point is indicated on the display (n value). 54 S 51 S 55 S 53 S S 54 S 52 S Sample Standard Deviation (σn 1) = 1.
• You can then edit the displayed data, if you want. Input the new value and then press the = key to replace the old value with the new one. This also means that if you want to perform some other operation (calculation, recall of statistical calculation results, etc.), you should always press the t key first to exit data display. • Pressing the S key instead of = after changing a value on the display registers the value you input as a new data item, and leaves the old value as it is.
Regression Calculations REG Use the F key to enter the REG Mode when you want to perform statistical calculations using regression. REG ................................................................ F 3 • In the SD Mode and REG Mode, the | key operates as the S key. • Entering the REG Mode displays screens like the ones shown below. L i n Log Ex p 1 2 r Pw r 1 3 e I nv Quad 2 3 • Press the number key ( 1, 2, or 3) that corresponds to the type of regression you want to use.
To recall this type of value: Σx2 Σx n Σy2 Σy Σxy o xσn xσn-1 p yσn yσn-1 Perform this key operation: AU1 AU2 AU3 AUr1 AUr2 AUr3 AX1 AX2 AX3 AXr1 AXr2 AXr3 AXrr1 AXrr2 Regression coefficient A Regression coefficient B Regression calculation other than quadratic regression Correlation coefficient r m n AXrr3 AXrrr1 AXrrr2 • The following table shows the key operations you should use to recall results in the case of quadratic regression.
• Example: Atmospheric Pressure vs. Temperature Perform linear regression to deTemperature Atmospheric Pressure termine the regression formula 10°C 1003 hPa terms and correlation coefficient 15°C 1005 hPa for the data nearby. Next, use 20°C 1010 hPa the regression formula to esti25°C 1011 hPa mate atmospheric pressure at 30°C 1014 hPa –5°C and temperature at 1000 hPa. Finally, calculate the coefficient of determination ( r 2 ) and sample covariance .
u Logarithmic, Exponential, Power, and Inverse Regression • Use the same key operations as linear regression to recall results for these types of regression. • The following shows the regression formulas for each type of regression. Logarithmic Regression Exponential Regression Power Regression Inverse Regression y A B ⴢ In x y A ⴢ eB·x (In y In A + Bx) y A ⴢ xB (In y In A + BIn x) y A B ⴢ 1/x u Quadratic Regression • The regression formula for quadratic regression is: y = A + Bx + Cx2.
Data Input Precautions • S S inputs the same data twice. • You can also input multiple entries of the same data using A G. To input the data “20 and 30” five times, for example, press 20 P 30 A G 5 S. • The above results can be obtained in any order, and not necessarily that shown above. • Precautions when editing data input for standard deviation also apply for regression calculations. • Do not use variables A through F, X, or Y to store data when performing statistical calculations.
Math ERROR • Causes • Calculation result is outside the allowable calculation range. • An attempt to perform a function calculation using a value that exceeds the allowable input range. • An attempt to perform an illogical operation (division by zero, etc.) • Action • Check your input values and make sure they are all within the allowable ranges. Pay special attention to values in any memory areas you are using. Stack ERROR • Cause • The capacity of the numeric stack or operator stack is exceeded.
k Order of Operations Calculations are performed in the following order of precedence. 1 Coordinate transformation: Pol (x, y), Rec (r, θ ) 2 Type A functions: With these functions, the value is entered and then the function key is pressed. x3, x2, x 1, x!, ° ’ ” m, m1, m2, n Angle unit conversions (DRG') 3 Powers and roots: ^ (xy), x 4 a b/c 5 Abbreviated multiplication format in front of π, e (natural logarithm base), memory name, or variable name: 2π, 3e, 5A, πA, etc.
k Stacks This calculator uses memory areas, called “stacks,” to temporarily store values (numeric stack) and commands (command stack) according to their precedence during calculations. The numeric stack has 10 levels and the command stack has 24 levels. A stack error (Stack ERROR) occurs whenever you try to perform a calculation that is so complex that the capacity of a stack is exceeded.
k Input Ranges Internal digits: 12 Accuracy*: As a rule, accuracy is ±1 at the 10th digit. Functions sinx Input Range DEG 0 x 4.499999999 1010 RAD 0 x 785398163.3 GRA 0 x 4.999999999 1010 cosx DEG 0 x 4.500000008 1010 RAD 0 x 785398164.9 GRA 0 x 5.000000009 1010 tanx DEG Same as sinx, except when x = (2n-1) 90. RAD Same as sinx, except when x = (2n-1) π/2. GRA Same as sinx, except when x = (2n-1) 100. sin–1x cos–1x 0 x 1 tan–1x 0 x 9.999999999 1099 sinhx coshx 0 x 230.
Functions nCr Input Range 0 n 1 1010, 0 r n (n, r are integers) 1 [n!/{r!(n–r)!}] 1 10100 49 Pol(x, y) x , y 9.999999999 10 (x2+y2) 9.999999999 1099 99 Rec(r, ) 0 r 9.
Power Supply The type of battery you should use depends on the model number of your calculator. fx-85MS/fx-300MS The TWO WAY POWER system actually has two power supplies: a solar cell and a G13 Type (LR44) button battery. Normally, calculators equipped with a solar cell alone can operate only when relatively bright light is present. The TWO WAY POWER system, however, lets you continue to use the calculator as long as there is enough light to read the display.
fx-83MS/fx-270MS/fx-350MS This calculator is powered by single G13 Type (LR44) button battery. • Replacing the Battery Dim figures on the display of the calculator indicate that battery power is low. Continued use of the calculator when the battery is low can result in improper operation. Replace the battery as soon as possible when display figures become dim. • To replace the battery 1 Press A i to turn off power. 2 Remove the screw that holds the battery cover in place and then remove the battery cover.
fx-82MS This calculator is powered by a single AA-size battery. • Replacing the Battery Dim figures on the display of the calculator indicate that battery power is low. Continued use of the calculator when the battery is low can result in improper operation. Replace the battery as soon as possible when display figures become dim. • To replace the battery 1 Press A i to turn power off. Screw Screw 2 Remove the six screws that hold the back cover in place and then remove the back cover.
Specifications Power Supply: fx-82MS: Single AA-size battery (R6P (SUM-3)) fx-83MS/fx-270MS/fx-350MS: Single G13 Type button battery (LR44) fx-85MS/fx-300MS: Solar cell and a single G13 Type button battery (LR44) Battery Life: fx-82MS: Approximately 17,000 hours continuous display of flashing cursor. Approximately 2 years when left with power turned off. fx-83MS/fx-270MS/fx-350MS: Approximately 9,000 hours continuous display of flashing cursor. Approximately 3 years when left with power turned off.
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