User Manual
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... the calculator is made up of the unit, be liable to care- 2 - The user should prepare physical records of data to high temperature or humidity, or large amounts of malfunction, repairs, or battery replacement (fx-85B/fx280), or insufficient light. It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to operate...
... the calculator is made up of the unit, be liable to care- 2 - The user should prepare physical records of data to high temperature or humidity, or large amounts of malfunction, repairs, or battery replacement (fx-85B/fx280), or insufficient light. It can leak and damage the unit. • Avoid using volatile liquids such as thinner or benzine to operate...
User Manual
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... of significant digit specification F8 SCI Cancels FIX and SCI 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 display indicator indicates COMP Mode. - 3 - fully reread this manual and ensure that the problem is not due to low battery power (fx-85B/fx-280) or operational error. •...
... of significant digit specification F8 SCI Cancels FIX and SCI 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 display indicator indicates COMP Mode. - 3 - fully reread this manual and ensure that the problem is not due to low battery power (fx-85B/fx-280) or operational error. •...
User Manual
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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
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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
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K 51. 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)) ...1151;17) = (17ѿ17 ѿ17ѿ17) = - 6 - • Example 7: 4/3π53 4 \ 3 - K 68. K 34. A x - 5 A N = 523.5987756 Constant Calculations • Press +, ,, -
K 51. 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)) ...1151;17) = (17ѿ17 ѿ17ѿ17) = - 6 - • Example 7: 4/3π53 4 \ 3 - K 68. K 34. A x - 5 A N = 523.5987756 Constant Calculations • Press +, ,, -
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• 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. • Example 1: (53ѿ6)ѿ(23Ҁ8)ѿ(56҂2)ѿ(99Ö4)҃210.75 (53ѿ6) 53 + 6 = A Y M 59. (23ȕ8) 23 , 8 | M ...
• 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. • Example 1: (53ѿ6)ѿ(23Ҁ8)ѿ(56҂2)ѿ(99Ö4)҃210.75 (53ѿ6) 53 + 6 = A Y M 59. (23ȕ8) 23 , 8 | M ...
User Manual
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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. • Example 1: To input 123 in memory A. M 13. • Example 3: To calculate the following using memory and a constant: (12҂3)ȕ(45҂3)ѿ(78҂3)҃...
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. • Example 1: To input 123 in memory A. M 13. • Example 3: To calculate the following using memory and a constant: (12҂3)ȕ(45҂3)ѿ(78҂3)҃...
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... • Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 0 2 56088. t 123 - 456 A J 2 56088. t 0 1 123. • Example 2: To store the results of digits (including division marks) cannot 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...
... • Use COMP mode for fraction calculations. • Total number of 123 ҂ 456 in memory B. t 0 2 56088. t 123 - 456 A J 2 56088. t 0 1 123. • Example 2: To store the results of digits (including division marks) cannot 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...
User Manual
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...; Example 5: To convert 0.08125 grams to polar coordinates (r, ). (RAD mode) r 1 Ay 3AL = RAD 2. - 17 - y A N DEG 1.732050808 A N swaps displayed value with value in memory. • Example 2: To convert rectangular coordinates (1, 3) to milligrams. .08125 A J 81.25-03 • Example 6: To generate a random number between 0.000 and 0.999. Example (results differ each time) A c 0.664 kCoordinate Conversion • Example 1: To convert polar coordinates (r҃2, ҃60°) to rectangular coordinates (x, y). (DEG mode) x 2 A z 60...
...; Example 5: To convert 0.08125 grams to polar coordinates (r, ). (RAD mode) r 1 Ay 3AL = RAD 2. - 17 - y A N DEG 1.732050808 A N swaps displayed value with value in memory. • Example 2: To convert rectangular coordinates (1, 3) to milligrams. .08125 A J 81.25-03 • Example 6: To generate a random number between 0.000 and 0.999. Example (results differ each time) A c 0.664 kCoordinate Conversion • Example 1: To convert polar coordinates (r҃2, ҃60°) to rectangular coordinates (x, y). (DEG mode) x 2 A z 60...
User Manual
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...: 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 for statistical calculations using the numbers 1 through 7. 7 A m 4 = 840. F l SD 0. - 18 - Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for the following data : 55, 54, 51, 55...
...: 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 for statistical calculations using the numbers 1 through 7. 7 A m 4 = 840. F l SD 0. - 18 - Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for the following data : 55, 54, 51, 55...
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Technical Information kKeys and Their Functions • General Arithmetic calculations Backspace Q Clear(retains memory k Number input 0 - 9, l Power on; All clear t Sign change E • Memory Memory in A Y Memory minus A { Memory plus Memory recall Z • fx-85B/fx-280 Memory Memory A recall 0 1 Memory B recall 0 2 Memory M recall 0 3 Memory A store A J 1 - 21 -
Technical Information kKeys and Their Functions • General Arithmetic calculations Backspace Q Clear(retains memory k Number input 0 - 9, l Power on; All clear t Sign change E • Memory Memory in A Y Memory minus A { Memory plus Memory recall Z • fx-85B/fx-280 Memory Memory A recall 0 1 Memory B recall 0 2 Memory M recall 0 3 Memory A store A J 1 - 21 -
User Manual
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... 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 - Larger values are automatically displayed using exponential notation. • Statistics (SD Mode) Arithmetic mean A ` Data delete A [ Data input Number of data A r Population standard deviation A p Sample standard deviation A q Statistical register clear A u Sum of squares of values A a Sum of decimal value, you can display up to 10...
... 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 - Larger values are automatically displayed using exponential notation. • Statistics (SD Mode) Arithmetic mean A ` Data delete A [ Data input Number of data A r Population standard deviation A p Sample standard deviation A q Statistical register clear A u Sum of squares of values A a Sum of decimal value, you can display up to 10...
User Manual
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... operator key), use Q to clear the input entirely and start again. - 25 - F 9 (NORM mode) 4. F 4 (DEG mode) 3. Or you can press k to backspace and delete input digits one . kMaking Corrections During Calculations • If you make a mistake when inputting a value (but you can determine the setting by -one -by performing the following steps. 1. kWhen you expect or if an error occurs, perform the following calculation. 1 \ 200 = 5. -03 NORM 1 format...
... operator key), use Q to clear the input entirely and start again. - 25 - F 9 (NORM mode) 4. F 4 (DEG mode) 3. Or you can press k to backspace and delete input digits one . kMaking Corrections During Calculations • If you make a mistake when inputting a value (but you can determine the setting by -one -by performing the following steps. 1. kWhen you expect or if an error occurs, perform the following calculation. 1 \ 200 = 5. -03 NORM 1 format...
User Manual
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...; 0) is performed during statistical calculations. ("-E-" 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 greater than 18 pairs of parentheses are performed using a value that exceeds the input range. ("-E-" indicator appears on the display.) c. In this case, the operator of the last key you press is...
...; 0) is performed during statistical calculations. ("-E-" 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 greater than 18 pairs of parentheses are performed using a value that exceeds the input range. ("-E-" indicator appears on the display.) c. In this case, the operator of the last key you press is...
User Manual
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... independent memory may be restored by the CASIO TWO- If this happens, move 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. • Weak battery power is too low, the display may become dim, calculation functions may...
... independent memory may be restored by the CASIO TWO- If this happens, move 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. • Weak battery power is too low, the display may become dim, calculation functions may...
User Manual
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.... Remove the old battery. 3. Install a new battery, making sure that hold the back cover in place with its positive (ѿ) side facing up (so you purchase it ). 4. Screws Battery Screws To replace the battery 1. Important! Keep batteries away from direct flame and heat. • Keep batteries out of the reach of how much the calculator is facing up (so you can cause them to load...
.... Remove the old battery. 3. Install a new battery, making sure that hold the back cover in place with its positive (ѿ) side facing up (so you purchase it ). 4. Screws Battery Screws To replace the battery 1. Important! Keep batteries away from direct flame and heat. • Keep batteries out of the reach of how much the calculator is facing up (so you can cause them to load...
User Manual
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... the following order of prec- closed in the innermost set of Operations and Levels Operations are nested, the operations en- edence. 1. 5. Press t to turn power on the next page shows register contents following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on . Functions 2. kOrder of parentheses are performed first. • Registers L through L store operations.There are six reg- 1 6 isters, so calculations up...
... the following order of prec- closed in the innermost set of Operations and Levels Operations are nested, the operations en- edence. 1. 5. Press t to turn power on the next page shows register contents following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on . Functions 2. kOrder of parentheses are performed first. • Registers L through L store operations.There are six reg- 1 6 isters, so calculations up...
User Manual
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Y Y P (x, y) P (r, θ ) Pol r y Rec θ 0 x X 0 X - 30 - 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. Coordinate Transformation • With polar coordinates, θ can be calculated within a range of -180° θ ͨ 180°.
Y Y P (x, y) P (r, θ ) Pol r y Rec θ 0 x X 0 X - 30 - 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. Coordinate Transformation • With polar coordinates, θ can be calculated within a range of -180° θ ͨ 180°.
User Manual
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.../fx-280 : CASIO TWO-WAY POWER System: solar cell plus one G13 Type (SR44 or LR44) batter y Battery Life (fx-85B/fx-280) : Approximately 3 years (1 hour use per day) on LR44/SR44 battery Input Ranges : Functions Input Range sinx cosx tanx (DEG) ȊxȊ9҂109 (RAD) ȊxȊ5҂107 rad (GRA) ȊxȊ1҂1010 grad However, for tan...
.../fx-280 : CASIO TWO-WAY POWER System: solar cell plus one G13 Type (SR44 or LR44) batter y Battery Life (fx-85B/fx-280) : Approximately 3 years (1 hour use per day) on LR44/SR44 battery Input Ranges : Functions Input Range sinx cosx tanx (DEG) ȊxȊ9҂109 (RAD) ȊxȊ5҂107 rad (GRA) ȊxȊ1҂1010 grad However, for tan...
User Manual
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Operating Temperature: 0°C-40°C (32°F-104°F) Dimensions: fx-82SOLAR/fx-260SOLAR: 8(H)i66.5(W)i125(D) mm 5/16"(H)i2-5/8"(W)i4-15/16"(D) fx-85B/fx-280: 13.5(H)i73(W)i144.5(D) mm 1/2"(H)i2-7/8"(W)i5-5/8"(D) Weight: fx-82SOLAR/fx-260SOLAR: 47 g (1.7oz) fx-85B/fx-280: 67 g (2.4oz) including battery Calculation Capacity: • Input/ Basic Calculations 10-digit mantissa; or 10-digit mantissa plus 2-digit exponent up to 10±99 - 35 -
Operating Temperature: 0°C-40°C (32°F-104°F) Dimensions: fx-82SOLAR/fx-260SOLAR: 8(H)i66.5(W)i125(D) mm 5/16"(H)i2-5/8"(W)i4-15/16"(D) fx-85B/fx-280: 13.5(H)i73(W)i144.5(D) mm 1/2"(H)i2-7/8"(W)i5-5/8"(D) Weight: fx-82SOLAR/fx-260SOLAR: 47 g (1.7oz) fx-85B/fx-280: 67 g (2.4oz) including battery Calculation Capacity: • Input/ Basic Calculations 10-digit mantissa; or 10-digit mantissa plus 2-digit exponent up to 10±99 - 35 -
