CASIO FX-820MS Calculator User Guide - Manual & Instructions
Summary
Designed for students and professionals, this manual provides comprehensive operation instructions for the CASIO EF-X820MS calculator. It covers advanced functionalities, such as replaying functions and mastering various calculation modes. The guide also details critical safety precautions regarding battery handling, environmental storage (avoiding temperature extremes), and proper disposal. Use this trusted resource to ensure safe, efficient, and long-lasting performance of your scientific calculating tool.
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fx-820MS User's Guide
http://world.casio.com/edu_e/
Page Summary Contents For CASIO FX-820MS Calculator User Guide - Manual & Instructions
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fx-820MS User's Guide http://world.casio.com/edu_e/
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CASIO ELECTRONICS CO., LTD. Unit 6, 1000 North Circular Road, London NW2 7JD, U.K.
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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 c...
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The displays and illustrations (such as key markings) shown in this User’s Guide are for illustrative purposes only, and may differ somewhat from the actual items they represent. The contents of this ...
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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 calculato...
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Contents Safety Precautions Handling Precautions Two-line Display Before getting started... k Modes k Input Capacity k Making Corrections During Input k Replay Function k Error Locator k Multi-stateme...
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k Angle Unit Conversion k Coordinate Conversion (Pol (x, y), Rec (r, θ )) k Engineering Notation Calculations Statistical Calculations Standard Deviation Regression Calculations Technical Information ...
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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 res...
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Note! To return the calculation mode and setup to the initial defaults shown below, press A B 2(Mode) =. Calculation Mode: COMP Angle Unit: Deg Exponential Display Format: Norm 1 Fraction Display Form...
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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 ca...
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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 t...
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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 Initializing the Calculato...
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Example 1: Example 2: 3 1 4 Example 3: 2 C 4 = Example 4: 1.6 2.1 1 C 2 + 1.6 = Results of calculations that mix fraction and decimal val- ues are always decimal. u Decimal ↔ Fraction Conversio...
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u Mixed Fraction ↔ Improper Fraction Conversion Example: 1 ↔ You can use the display setup (Disp) screen to specify the display format when a fraction calculation result is greater than one. To change...
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Example 4 To discount 3500 by 25% (2625) Example 5 To discount the sum of 168, 98, and 734 by As shown here, if you want to use the current Answer Memory value in a mark up or discount calculation, yo...
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Example 2: To perform the following calculation: 12°34’56” 3.45 k FIX, SCI, RND To change the settings for the number of decimal places, the number of significant digits, or the exponential dis- pla...
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Example 2: 1 3, displaying result with two significant digits (Sci 2) F..... 2(Sci) 2 1 \ 3 = .....3(Norm) 1 to clear the Sci specifica- Press F tion. Memory Calculations Use the F key to enter the ...
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Independent Memory Values can be input directly into memory, added to memory, or subtracted from memory. Independent memory is convenient for calculating cumulative totals. Independent memory uses the...
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COMPScientific Function Calculations Use the F key to enter the COMP Mode when you want to perform basic arithmetic calculations. COMP .............................................................F 1 ...
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Example 3 cos1 0.25 π (rad)( (rad))π q ..... 2 (Rad) A V R L 2 \ 2 T = g \ A x = Example 4: tan1 0.741 36.53844577 ° q ..... 1 (Deg) A g 0.741 = k Hyperbolic/Inverse Hyperbolic Functions Example ...
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Example 2: 5 3 27 –1.290024053 A D 5 + A D R D 27 T = Example 3: 7 123 ( = 123 ) 1.988647795 7• 7 A H 123 = Example 4: 123 302 1023 123 + 30 K = Example 5: 123 1728 12 N Example 6: 12 E...
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Example: To convert 4.25 radians to degrees q ..... 1(Deg) k Coordinate Conversion (Pol (x, y), Rec (r, θ )) Calculation results are automatically assigned to vari- ables E and F. Example 1: To conver...
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Statistical Calculations Standard Deviation Use the F key to enter the SD Mode when you want to perform statistical calculations using standard de- viation. SD ...........................................
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Arithmetic Mean (o) = 53.375 A X 1 = Number of Data (n) = 8 A U 3 = Sum of Values (Σx) = 427 A U 2 = Sum of Squares of Values (Σx2 ) = 22805 A U 1 = Data Input Precautions S S inputs the same data twi...
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Press 2 to exit data input without registering the value you just input. Press 1 if you want to register the value you just input, without saving it in memory. If you do this, however, you will not be...
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Always start data input with A B 1 (Scl) = to clear statistical memory. Input data using the key sequence shown below. <x-data> P <y-data> S The values produced by a regression calculation...
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The values in the above tables can be used inside of expressions the same way you use variables. u Linear Regression The regression formula for linear regression is: y = A + Bx. Example: Atmospheric P...
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Coefficient of Determination = 0.965517241 Sample Covariance = 35 E A U r 3 , u Logarithmic, Exponential, Power, and Inverse Regression Use the same key operations as linear regression to re- call res...
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Regression Coefficient C = – 6.71629667 10 –3 n when xi is 16 = –13.38291067 16 A X r r r 3 = m1 when yi is 20 = 47.14556728 20 A X r r r 1 = m2 when yi is 20 = 175.5872105 20 A X r r r 2 = Data Input...
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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 perfor...
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k Order of Operations Calculations are performed in the following order of prec- edence. 1Coordinate transformation: Pol (x, y), Rec (r, θ ) Type A functions: With these functions, the value is entere...
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k Stacks This calculator uses memory areas, called “stacks,” to tem- porarily store values (numeric stack) and commands (com- mand stack) according to their precedence during calcu- lations. The numer...
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Functions Input Range Pol(x, y) Rec(r, ) the case of ^(xy), x y , x!, 3 , n Pr, n Cr, etc.)
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In the vicinity of a function’s singular point and point of inflection, errors are cumulative and may become large. Power Supply The TWO WAY POWER system actually has two power supplies: a solar cell ...
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Auto Power Off Calculator power automatically turns off if you do not perform any operation for about six minutes. When this happens, press 5 to turn power back on. Specifications Power Supply: Solar ...
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CASIO COMPUTER CO., LTD. 6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan SA0205-A Printed in China
Manual Details
| Brand | Casio |
|---|---|
| Pages | 38 |
| File Size | 222.77 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What must I do before using the calculator for the first time?
Be sure to press the 5 key before using the calculator for the first time.
How can I tell if my battery power is running low?
Symptoms include display figures being dim in little light, or nothing appearing on the screen when pressing the 5 key.
What liquid agents should I avoid when cleaning the unit?
Never use thinner, benzene, or other volatile agents to clean the calculator as this can damage markings.
What are the operating temperature limitations for this device?
The operating temperature range is specified as 0°C to 40°C (32°F to 104°F).