User Manual
Page 4
.../fx-280) in areas exposed to operate. It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to make sure that has been dipped in a solution of water and a neutral detergent and wring out. • In no event will not operate during calculations.... be liable to protect against such data loss. • Never dispose of battery (fx-85B/fx-280), the liquid crystal panel, or other damages arising out of dust. When exposed to low temperatures, the calculator may require more time to display results and may even fail to high temperature or ...
.../fx-280) in areas exposed to operate. It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to make sure that has been dipped in a solution of water and a neutral detergent and wring out. • In no event will not operate during calculations.... be liable to protect against such data loss. • Never dispose of battery (fx-85B/fx-280), the liquid crystal panel, or other damages arising out of dust. When exposed to low temperatures, the calculator may require more time to display results and may even fail to high temperature or ...
User Manual
Page 5
... battery power (fx-85B/fx-280) or operational error. • The contents of this manual are subject to change without notice. • No part of this manual on hand for future reference. 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...
... battery power (fx-85B/fx-280) or operational error. • The contents of this manual are subject to change without notice. • No part of this manual on hand for future reference. 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...
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
...; Press +, ,, - 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 27.6 K -108. •...
...; Press +, ,, - 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 27.6 K -108. •...
User Manual
Page 9
....75 (53ѿ6) 53 + 6 = 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...
....75 (53ѿ6) 53 + 6 = 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...
User Manual
Page 10
MK 135. MK 135. 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. ...
MK 135. MK 135. 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
... exceed 10. • Example 1: 2 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 - Fraction Calculations • Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 123 - 456 A J 2 56088. t 0 2 56088.
... exceed 10. • Example 1: 2 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 - Fraction Calculations • Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 123 - 456 A J 2 56088. t 0 2 56088.
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
K 276. 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. kSexagesimal Functions • Example 1: 14°25'36" + 12°23'34" = ... 34 I = 26°49°10. - 11 - • Example 4: To discount 3500 by 25%. 3500 - 25 A v , 2625. • Example 5: To calculate the following using a constant. 12% of 1200 = 144 18% of 1200 = 216 23% of 1200 = 276 (12%) (18%) (23%) 1200 - - 12 A v 18 A v 23 ...
K 276. 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. kSexagesimal Functions • Example 1: 14°25'36" + 12°23'34" = ... 34 I = 26°49°10. - 11 - • Example 4: To discount 3500 by 25%. 3500 - 25 A v , 2625. • Example 5: To calculate the following using a constant. 12% of 1200 = 144 18% of 1200 = 216 23% of 1200 = 276 (12%) (18%) (23%) 1200 - - 12 A v 18 A v 23 ...
User Manual
Page 20
...member groups can be organized in a group of 10 individuals. 10 A n 4 = 210. Enter SD Mode. Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for statistical calculations using the numbers 1 through 7. 7 A m 4 = 840. F l SD 0. - 18 - 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 calculate nҀ1, n, o, n, ⌺x, and ⌺x2...
...member groups can be organized in a group of 10 individuals. 10 A n 4 = 210. Enter SD Mode. Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for statistical calculations using the numbers 1 through 7. 7 A m 4 = 840. F l SD 0. - 18 - 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 calculate nҀ1, n, o, n, ⌺x, and ⌺x2...
User Manual
Page 26
... display up to 10 digits. 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...
... display up to 10 digits. 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...
User Manual
Page 27
... no indication on the display of the examples in this manual show calculation results using the NORM 1 format. F 4 (DEG mode) 3. If calculation results are working with to confirm it is currently in effect, but did not yet press an operator key), use Q to backspace and delete input digits one . F 0 (COMP mode) 2. Enter the correct...
... no indication on the display of the examples in this manual show calculation results using the NORM 1 format. F 4 (DEG mode) 3. If calculation results are working with to confirm it is currently in effect, but did not yet press an operator key), use Q to backspace and delete input digits one . F 0 (COMP mode) 2. Enter the correct...
User Manual
Page 28
...the display.) b. In this case, the operator of the last key you press is used . ("- 1-" indicator appears on the display.) d. kOverflow or Error Check The following conditions make further calculation impossible. When an illogical operation (such as division by zero) is performed. ("-E-" indicator... of the above conditions, press t and perform the calculation from the beginning. - 26 - When a result (whether intermediate or final) or a total accumulated in memor y is greater than 18 pairs of parentheses are performed using a value that exceeds the input range. ("-E-" indicator ...
...the display.) b. In this case, the operator of the last key you press is used . ("- 1-" indicator appears on the display.) d. kOverflow or Error Check The following conditions make further calculation impossible. When an illogical operation (such as division by zero) is performed. ("-E-" indicator... of the above conditions, press t and perform the calculation from the beginning. - 26 - When a result (whether intermediate or final) or a total accumulated in memor y is greater than 18 pairs of parentheses are performed using a value that exceeds the input range. ("-E-" indicator ...
User Manual
Page 29
...all zeros. WAY POWER system, which 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 Type (SR44 or LR44) battery. ...cannot be lost. This clears the intermediate result just prior to the overflow, so you could also press k. kPower Supply • fx-82SOLAR/fx-260SOLAR This calculator is powered by the CASIO TWO- • In the case of ѿ(1҂10Ҁ99)to Ҁ(1҂10Ҁ99).
...all zeros. WAY POWER system, which 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 Type (SR44 or LR44) battery. ...cannot be lost. This clears the intermediate result just prior to the overflow, so you could also press k. kPower Supply • fx-82SOLAR/fx-260SOLAR This calculator is powered by the CASIO TWO- • In the case of ѿ(1҂10Ҁ99)to Ҁ(1҂10Ҁ99).
User Manual
Page 30
...try to charge batteries, take them apart, or allow them to burst or leak, possibly damaging the calculator. • Be sure to replace the battery at least once every three years, regardless of the calculator. • The battery that comes with its positive (ѿ) side facing up (so you can cause... memory contents to the interior of how much the calculator is used. Keep batteries away from direct flame and heat. • Keep batteries out of the reach of batteries can see it is facing up (so...
...try to charge batteries, take them apart, or allow them to burst or leak, possibly damaging the calculator. • Be sure to replace the battery at least once every three years, regardless of the calculator. • The battery that comes with its positive (ѿ) side facing up (so you can cause... memory contents to the interior of how much the calculator is used. Keep batteries away from direct flame and heat. • Keep batteries out of the reach of batteries can see it is facing up (so...
User Manual
Page 31
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 to 18 times. • Example: The following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on...
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 to 18 times. • Example: The following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on...
User Manual
Page 32
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. The calculation range is the same for radians and grads. 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°.
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. The calculation range is the same for radians and grads. 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°.