User Manual
Page 4
...key operations are being performed correctly. • Never leave the dead battery (fx-85B/fx-280) in a solution of water and a neutral detergent and wring out. • In no event will resume once the calculator is made up of precision components. Correct operation will the manufacturer and its ...a cloth that all your calculator and otherwise subjecting it to care- 2 - When exposed to low temperatures, the calculator may require more time to display results and may even fail to clean the unit. It can leak and damage the unit. • Avoid using volatile liquids such as thinner ...
...key operations are being performed correctly. • Never leave the dead battery (fx-85B/fx-280) in a solution of water and a neutral detergent and wring out. • In no event will resume once the calculator is made up of precision components. Correct operation will the manufacturer and its ...a cloth that all your calculator and otherwise subjecting it to care- 2 - When exposed to low temperatures, the calculator may require more time to display results and may even fail to clean the unit. It can leak and damage the unit. • Avoid using volatile liquids such as thinner ...
User Manual
Page 5
fully reread this manual and ensure that the problem is not due to low battery power (fx-85B/fx-280) or operational error. • The contents of this manual are subject to change without notice. • No part ... settings F9 NORM * Display indicators show current mode setting. Modes Application Key Mode Operation Name* Standard deviation calculations Fl SD Normal calculations Calculations using degrees F0 F4 COMP DEG Calculations using radians Calculations using grads F5 RAD F6 GRA Number of decimal place specification F7 FIX Number of the manufacturer. • Keep...
fully reread this manual and ensure that the problem is not due to low battery power (fx-85B/fx-280) or operational error. • The contents of this manual are subject to change without notice. • No part ... settings F9 NORM * Display indicators show current mode setting. Modes Application Key Mode Operation Name* Standard deviation calculations Fl SD Normal calculations Calculations using degrees F0 F4 COMP DEG Calculations using radians Calculations using grads F5 RAD F6 GRA Number of decimal place specification F7 FIX Number of the manufacturer. • Keep...
User Manual
Page 6
Note! • A mode guide is located at the top of the display screen. • DEG, RAD, and GRA modes can be used in combination with COMP and SD modes. • F9 does not exit SD mode. • F0 exits SD mode. • F0 does not clear SCI or FIX specifications. • Always press t before entering DEG, RAD, and GRA modes. • Remember to always set the operating mode and angular unit (DEG, RAD, GRA) before starting your calculation. - 4 -
Note! • A mode guide is located at the top of the display screen. • DEG, RAD, and GRA modes can be used in combination with COMP and SD modes. • F9 does not exit SD mode. • F0 exits SD mode. • F0 does not clear SCI or FIX specifications. • Always press t before entering DEG, RAD, and GRA modes. • Remember to always set the operating mode and angular unit (DEG, RAD, GRA) before starting your calculation. - 4 -
User Manual
Page 7
O 5+ 4PP = 122. • You can skip all P operations before the = key. - 5 - Basic Calculations • Use the COMP mode for basic calculations. • Example 1: 23ѿ4.5Ҁ53 23 + 4.5 , 53 = -25.5 • Example 2: 56҂(Ҁ12)Ö(Ҁ2.5) 56 -12 E \ 2.5 E = 268.8 • Example 3: 2Ö3҂(1҂1020) 2 \ 3 -1 e 20 = 6.66666666719 • Example 4: 7҂8Ҁ4҂5=36 7 - 8 , 4 - 5 = 36. • Example 5: 6 4҂5 =0.3 4 -5 \ 6AN = 0.3 • Example 6: 2҂[7ѿ6҂(5ѿ4)]҃122 2 - O 7 + 6 -
O 5+ 4PP = 122. • You can skip all P operations before the = key. - 5 - Basic Calculations • Use the COMP mode for basic calculations. • Example 1: 23ѿ4.5Ҁ53 23 + 4.5 , 53 = -25.5 • Example 2: 56҂(Ҁ12)Ö(Ҁ2.5) 56 -12 E \ 2.5 E = 268.8 • Example 3: 2Ö3҂(1҂1020) 2 \ 3 -1 e 20 = 6.66666666719 • Example 4: 7҂8Ҁ4҂5=36 7 - 8 , 4 - 5 = 36. • Example 5: 6 4҂5 =0.3 4 -5 \ 6AN = 0.3 • Example 6: 2҂[7ѿ6҂(5ѿ4)]҃122 2 - O 7 + 6 -
User Manual
Page 8
...; Example 7: 4/3π53 4 \ 3 - or \ twice after inputting a number to make that number a constant. • "K" is on the display while a constant is being used. • Use the COMP mode for constant calculations. • Example 1: 2.3ѿ3, then 2.3ѿ6 (2.3ѿ3) 2.3 + + 3 = (2.3ѿ6) 6 = K 5.3 K 8.3 • Example 2: 12҂2.3, then 12҂(ȕ9) (12҂2.3) 12 - - 2.3 = (12҂(ȕ9)) 9 E = K 27...
...; Example 7: 4/3π53 4 \ 3 - or \ twice after inputting a number to make that number a constant. • "K" is on the display while a constant is being used. • Use the COMP mode for constant calculations. • Example 1: 2.3ѿ3, then 2.3ѿ6 (2.3ѿ3) 2.3 + + 3 = (2.3ѿ6) 6 = K 5.3 K 8.3 • Example 2: 12҂2.3, then 12҂(ȕ9) (12҂2.3) 12 - - 2.3 = (12҂(ȕ9)) 9 E = K 27...
User Manual
Page 9
• Example 4: 1.74҃8.3521 (1.7 2) 1.7 - - = (1.7 3) = (1.7 4) = K 2.89 K 4.913 K 8.3521 Memory Calculations • Use the COMP mode for memory calculations. • Use A Y, |, A { and Z for memory calculations. A Y replaces current memory contents. • "M" appears when there is a value in memory. • To clear memory, press 0 A Y or t A Y. • ...= A Y M 59. (23ȕ8) 23 , 8 | M 15. (56҂2) 56 - 2 | M 112. (99Ȗ4) 99 \ 4 | M 24.75 (Memory recall) Z M 210.75 • Example 2: To calculate the following using memory as shown. - 7 -
• Example 4: 1.74҃8.3521 (1.7 2) 1.7 - - = (1.7 3) = (1.7 4) = K 2.89 K 4.913 K 8.3521 Memory Calculations • Use the COMP mode for memory calculations. • Use A Y, |, A { and Z for memory calculations. A Y replaces current memory contents. • "M" appears when there is a value in memory. • To clear memory, press 0 A Y or t A Y. • ...= A Y M 59. (23ȕ8) 23 , 8 | M 15. (56҂2) 56 - 2 | M 112. (99Ȗ4) 99 \ 4 | M 24.75 (Memory recall) Z M 210.75 • Example 2: To calculate the following using memory as shown. - 7 -
User Manual
Page 10
kAdditional fx-85B/fx-280 Memory Calculations • The fx-85B/fx-280 has two additional memories named A and B. • Use A J to store data and 0 to recall data. • Storing data in a memory replaces anything stored there previously. • To clear a memory, store a zero in it. ...
kAdditional fx-85B/fx-280 Memory Calculations • The fx-85B/fx-280 has two additional memories named A and B. • Use A J to store data and 0 to recall data. • Storing data in a memory replaces anything stored there previously. • To clear a memory, store a zero in it. ...
User Manual
Page 11
t 0 2 56088. t 123 - 456 A J 2 56088. Fraction Calculations • Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 0 1 123. • Example 2: To store the results of digits (including division...3 ѿ 4 5 ҃1175 2 C 3 + 4 C 5 = 1 7 15. • Example 2: 3 1 4 ѿ1 2 3 ҃4 11 12 3 C 1 C 4 + 1 C 2 C 3 = 4 11 12. • Example 3: 2 4 ҃ 1 2 2 C 4 = • Example 4: 1 2 ѿ1.6҃2.1 1 C 2 + 1.6 = 2 4. 1 2. 2.1 Fraction/decimal calculation result is always decimal. - 9 -
t 0 2 56088. t 123 - 456 A J 2 56088. Fraction Calculations • Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 0 1 123. • Example 2: To store the results of digits (including division...3 ѿ 4 5 ҃1175 2 C 3 + 4 C 5 = 1 7 15. • Example 2: 3 1 4 ѿ1 2 3 ҃4 11 12 3 C 1 C 4 + 1 C 2 C 3 = 4 11 12. • Example 3: 2 4 ҃ 1 2 2 C 4 = • Example 4: 1 2 ѿ1.6҃2.1 1 C 2 + 1.6 = 2 4. 1 2. 2.1 Fraction/decimal calculation result is always decimal. - 9 -
User Manual
Page 12
Percentage Calculations • Use COMP mode for percentage calculations. • Example 1: To calculate 12% of 1500. 1500 - 12 A v 180. • Example 2: To calculate what percentage of 880 is 660. 660 \ 880 A v 75. • Example 3: To add 15% onto 2500. 2500 - 15 A v + - 10 - 2875. • Example 5: 1 2 ↔ 0.5(Fraction ↔Decimal) 1 C 2 = C C • Example 6: 1 2 3 ↔ 5 3 1C 2C 3 A B A B 1 2. 0.5 1 2. 1 2 3. 5 3. 1 2 3.
Percentage Calculations • Use COMP mode for percentage calculations. • Example 1: To calculate 12% of 1500. 1500 - 12 A v 180. • Example 2: To calculate what percentage of 880 is 660. 660 \ 880 A v 75. • Example 3: To add 15% onto 2500. 2500 - 15 A v + - 10 - 2875. • Example 5: 1 2 ↔ 0.5(Fraction ↔Decimal) 1 C 2 = C C • Example 6: 1 2 3 ↔ 5 3 1C 2C 3 A B A B 1 2. 0.5 1 2. 1 2 3. 5 3. 1 2 3.
User Manual
Page 13
...'10" 14 I 25 I 36 I + 12 I 23 I 34 I = 26°49°10. - 11 - K 216. Scientific Function Calculations • Use COMP mode for scientific function calculations. • Some calculations may take a long time to complete. • Wait for result before starting next calculation. • =3.1415926536. • Example 4: To discount 3500 by 25%. 3500 - 25 A v , 2625. • Example...
...'10" 14 I 25 I 36 I + 12 I 23 I 34 I = 26°49°10. - 11 - K 216. Scientific Function Calculations • Use COMP mode for scientific function calculations. • Some calculations may take a long time to complete. • Wait for result before starting next calculation. • =3.1415926536. • Example 4: To discount 3500 by 25%. 3500 - 25 A v , 2625. • Example...
User Manual
Page 20
Enter SD Mode. Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for the following data : 55, 54, 51, 55, 53, 53, 54, 52. F l SD 0. - 18 - θ A N RAD 1.... 4-member groups can be organized in a group of 10 individuals. 10 A n 4 = 210. kCombination • Example: To determine how many different 4-digit values can be produced using standard deviation. • If FIX or SCI is on the display, press F 9 first. • Data input always starts with A u. • Example: To...
Enter SD Mode. Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for the following data : 55, 54, 51, 55, 53, 53, 54, 52. F l SD 0. - 18 - θ A N RAD 1.... 4-member groups can be organized in a group of 10 individuals. 10 A n 4 = 210. kCombination • Example: To determine how many different 4-digit values can be produced using standard deviation. • If FIX or SCI is on the display, press F 9 first. • Data input always starts with A u. • Example: To...
User Manual
Page 26
In the case of values A o kExponential Display Formats This calculator can select between two formats that determine at what point exponential notation is used. • NORM 1 With NORM 1, exponential notation is automatically used for integer values with more than 10 digits and decimal values with more than two... decimal places. • NORM 2 With NORM 2, exponential notation is automatically used for integer values with more than 10 digits and decimal values with more than nine decimal places. - 24 - • Statistics (SD ...
In the case of values A o kExponential Display Formats This calculator can select between two formats that determine at what point exponential notation is used. • NORM 1 With NORM 1, exponential notation is automatically used for integer values with more than 10 digits and decimal values with more than two... decimal places. • NORM 2 With NORM 2, exponential notation is automatically used for integer values with more than 10 digits and decimal values with more than nine decimal places. - 24 - • Statistics (SD ...
User Manual
Page 27
...the examples in this manual show calculation results using the NORM 1 format. Enter the correct modes to backspace and delete input digits one-by performing the following steps. 1. To switch between NORM 1 and NORM 2 Press F 9. F 0 (COMP mode) 2. F 4 (DEG mode) 3. If calculation results are working with to ... are not what you can press k to confirm it is currently in effect, but did not yet press an operator key), use Q to perform the calculation and try again. F 9 (NORM mode) 4. Check the formula you can determine the setting by -one. kMaking Corrections During...
...the examples in this manual show calculation results using the NORM 1 format. Enter the correct modes to backspace and delete input digits one-by performing the following steps. 1. To switch between NORM 1 and NORM 2 Press F 9. F 0 (COMP mode) 2. F 4 (DEG mode) 3. If calculation results are working with to ... are not what you can press k to confirm it is currently in effect, but did not yet press an operator key), use Q to perform the calculation and try again. F 9 (NORM mode) 4. Check the formula you can determine the setting by -one. kMaking Corrections During...
User Manual
Page 28
... on the display.) c. When a result (whether intermediate or final) or a total accumulated in memor y is displayed to calculate o and σn while n ҃ 0) is performed during statistical calculations. ("-E-" indicator appears on display.) e. a. When function calculations are used , but the operation retains the order of precedence of the operation for the first key you press is...
... on the display.) c. When a result (whether intermediate or final) or a total accumulated in memor y is displayed to calculate o and σn while n ҃ 0) is performed during statistical calculations. ("-E-" indicator appears on display.) e. a. When function calculations are used , but the operation retains the order of precedence of the operation for the first key you press is...
User Manual
Page 29
... makes it possible for the calculator to operate even in total darkness. • The calculator retains memory contents no matter what the lighting conditions. • The TWO-WAY POWER system uses two power sources: a solar cell and a single G13 ...fx-82SOLAR/fx-260SOLAR This calculator is powered by pressing 5. - 27 - Instead, the display shows all zeros. If this happens, move to provide power. • If available light is too low, the display may become dim, calculation functions may become impossible, or the contents of the independent memory may be restored by the CASIO TWO- Solar...
... makes it possible for the calculator to operate even in total darkness. • The calculator retains memory contents no matter what the lighting conditions. • The TWO-WAY POWER system uses two power sources: a solar cell and a single G13 ...fx-82SOLAR/fx-260SOLAR This calculator is powered by pressing 5. - 27 - Instead, the display shows all zeros. If this happens, move to provide power. • If available light is too low, the display may become dim, calculation functions may become impossible, or the contents of the independent memory may be restored by the CASIO TWO- Solar...
User Manual
Page 30
... secure it ). 4. It may leak, causing serious damage to replace the battery at least once every three years, regardless of how much the calculator is for testing only. To replace the battery 1. Remove the old battery. 3. Screws Battery Screws Always keep written records of batteries can see ... use of all important data. • Always be sure to become corrupted or lost completely. Keep batteries away from direct flame and heat. • Keep batteries out of the reach of the calculator. • The battery that hold the back cover in place with the calculator when you can ...
... secure it ). 4. It may leak, causing serious damage to replace the battery at least once every three years, regardless of how much the calculator is for testing only. To replace the battery 1. Remove the old battery. 3. Screws Battery Screws Always keep written records of batteries can see ... use of all important data. • Always be sure to become corrupted or lost completely. Keep batteries away from direct flame and heat. • Keep batteries out of the reach of the calculator. • The battery that hold the back cover in place with the calculator when you can ...
User Manual
Page 31
... from left to right, with the same precedence are nested, the operations en- Functions 2. formed first. Press t to 18 times. • Example: The following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on . 5. xy, x1/y, R →P, P →R, nPr, nCr 3. ҂, Ȗ... enclosed in the following the above input. - 29 - kOrder of Operations and Levels Operations are six reg- 1 6 isters, so calculations up to six levels can be stored. • Each level can contain up to three open parentheses, so parentheses can be nested up...
... from left to right, with the same precedence are nested, the operations en- Functions 2. formed first. Press t to 18 times. • Example: The following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on . 5. xy, x1/y, R →P, P →R, nPr, nCr 3. ҂, Ȗ... enclosed in the following the above input. - 29 - kOrder of Operations and Levels Operations are six reg- 1 6 isters, so calculations up to six levels can be stored. • Each level can contain up to three open parentheses, so parentheses can be nested up...
User Manual
Page 32
The calculation range is the same for radians and grads. Register Contents x4 L1 (( 5 ѿ L 2 4 ҂ L3 ((( 3 ѿ L4 2 ҂ L 5 L6 kFormulas, Ranges, and Conventions The following are the formulas, ranges, and conventions that are applied to various calculations that can be performed using this calculator. Y Y P (x, y) P (r, θ ) Pol r y Rec θ 0 x X 0 X - 30 - Coordinate Transformation • With polar coordinates, θ can be calculated within a range of -180° θ ͨ 180°.
The calculation range is the same for radians and grads. Register Contents x4 L1 (( 5 ѿ L 2 4 ҂ L3 ((( 3 ѿ L4 2 ҂ L 5 L6 kFormulas, Ranges, and Conventions The following are the formulas, ranges, and conventions that are applied to various calculations that can be performed using this calculator. Y Y P (x, y) P (r, θ ) Pol r y Rec θ 0 x X 0 X - 30 - Coordinate Transformation • With polar coordinates, θ can be calculated within a range of -180° θ ͨ 180°.