Casio FX 260 User Manual
Casio FX 260 - Solar Scientific Calculator Manual
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- Casio FX 260 | User Manual - Page 1
fx-82SOLAR fx-85B fx-260SOLAR fx-280 NQPOR - Casio FX 260 | User Manual - Page 2
fx-82SOLAR/ fx-260SOLAR fx-85B/fx-280 ENGLISH 1 ESPAÑOL 36 FRANÇAIS 73 DEUTSCH 110 ITALIANO 147 - Casio FX 260 | User Manual - Page 3
CASIO ELECTRONICS CO., LTD. Unit 6, 1000 North Circular Road, London NW2 7JD, U.K. Contents Handling Precautions ... 2 Modes ... 3 Basic Calculations ... 5 Constant Calculations ... 6 Memory Calculations ... 7 Fraction Calculations ... 9 Percentage Calculations ... 10 Scientific Function - Casio FX 260 | User Manual - Page 4
calculator is brought back to normal temperature. • The display will go blank and keys will not operate during calculations (fx-85B/fx-280) in the battery compartment. It can leak and damage the unit. • Avoid using battery replacement (fx-85B/fx280), or insufficient light. The user should prepare - Casio FX 260 | User Manual - Page 5
. • Keep 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 F6 GRA Number of decimal place - Casio FX 260 | 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 • Remember to always set the operating mode and angular unit (DEG, RAD, GRA) before starting your calculation. - 4 - - Casio FX 260 | User Manual - Page 7
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 - Casio FX 260 | User Manual - Page 8
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 - Casio FX 260 | 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 - Casio FX 260 | User Manual - Page 10
(78҂3) (Memory recall) 3 - - 12 = A Y 45 A { 78 | Z MK 36. MK 135. MK 234. 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 - Casio FX 260 | User Manual - Page 11
J 2 56088. t 0 2 56088. Fraction Calculations • Use COMP mode for fraction calculations. • Total number of digits (including division 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 - Casio FX 260 | User Manual - Page 12
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 - Casio FX 260 | User Manual - Page 13
1200 = 144 18% of 1200 = 216 23% of 1200 = 276 (12%) (18%) (23%) 1200 - - 12 A v 18 A v 23 A v K 144. K 216. 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 - Casio FX 260 | User Manual - Page 14
I I I 1°13°48. 1.23 1°13°48. • Example 5: 12°34' ↔ 12.56666667 12 I 34 I A O 12.56666667 You can also use I when inputting values to convert between sexagesimal and decimal. kTrigonometric/Inverse Trigonometric Functions • Example 1: sin ( 6 rad) (RAD mode) A x \ 6 = S RAD 0.5 - 12 - - Casio FX 260 | User Manual - Page 15
• Example 2: cos 63°52'41" (DEG mode) 63 I 52 I 41 I W DEG 0.440283084 • Example 3: tan (ȕ35gra)(GRA mode) 35 E h GRA -0.612800788 • Example 4: cos-1 ( 2 2 rad) (RAD mode) 2A L\ 2=A V RAD 0.785398163 • Example 5: To convert 45 degrees to radians, grads, and back to degrees. F 4 45 - Casio FX 260 | User Manual - Page 16
kHyperbolic/Inverse Hyperbolic Functions • Example 1: sinh 3.6 3.6 M S 18.28545536 • Example 2: sinhҀ1 30 30 M A j 4.094622224 kCommon and Natural Logarithms, Exponents • Example 1: log 1.23 1.23 R 0.089905111 • Example 2: In 90 (҃loge 90) 90 T Iog 64 • Example 3: Iog 4 64 R \ 4 R = 4. - Casio FX 260 | User Manual - Page 17
• Example 8: log sin 40° + log cos 35° (DEG mode) 40 S R +35 W R = DEG -0.278567983 To convert to antilogarithm: A Q DEG 0.526540784 • Example 9: 81/3 8 A s 3 = 2. k Square Roots, Cube Roots, Squares, Reciprocals and Factorials • Example 1: 2ѿ 3҂ 5 2 A L + 3 A L - 5 A L = 5.287196909 • - Casio FX 260 | User Manual - Page 18
• Example 5: 8! 8 Af 40320. kFIX, SCI, NORM, RND, RAN#, ENG Calculations • Example 1: 1.234ѿ1.234, rounding result to two places (FIX 2). F 7 2 FIX 0.00 1.234 +1.234 = FIX 2.47 • Example 2: 1.234ѿ1.234, rounding input to two places. F 7 2 1.234 A b + 1.234 A b = • - Casio FX 260 | User Manual - Page 19
• Example 4: To convert 56,088 meters to kilometers. 56088 A J 56.088 03 • Example 5: To convert 0.08125 grams 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 - Casio FX 260 | User Manual - Page 20
many different 4-member groups can be organized in a group of 10 individuals. 10 A n 4 = 210. Statistical Calculations (SD Mode) • Press F l to enter the SD Mode for statistical calculations using standard deviation. • If FIX or SCI is on the display, press F 9 first. • Data input always starts - Casio FX 260 | User Manual - Page 21
SD 53.375 A r SD 8. A o SD 427. A a SD 22805. • } } inputs the same data twice (as above). • You can also input multiple entries of the same data using -. To input the data 110 ten times, for example, press 110 -10 }. • The above results can be obtained in any order, and not necessarily that - Casio FX 260 | User Manual - Page 22
kMaking Corrections During Data Input • Example 1: To change data you have just input. Correct 51 } 130 31 } 130 31 } Actual 50 } 120 - 120 31 Correction A [ 51 } t130 31 } t130 31 } • Example 2: To change data you previously input. Correct Actual 51 } 49 } 130 - 120 31 } 30 } Correction 49 A - Casio FX 260 | User Manual - Page 23
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 - Casio FX 260 | User Manual - Page 24
store A J 2 Memory M store A J 3 • Special Display/memory swap A N, A d Exponent e Internal rounding A b Parentheses O, P Pi (3.1415926536 A x Select mode F Sexagesimal I, A O Shifts key functions A • Scientific Functions Arc cosine A V Arc sine A j Arc tangent A g Common antilogarithm - Casio FX 260 | User Manual - Page 25
Cube A N Cube root A D Engineering A J, A P Factorial A f Fraction C Fraction A B Hyperbolic M Natural antilogarithm A U Natural logarithm T Percent A v Polar-to-rectangular A z Power w Random number A c Reciprocal A X Rectangular-to-polar A y Root A s Sine S Square K Square root - Casio FX 260 | User Manual - Page 26
u Sum of squares of values A a Sum of values A o kExponential Display Formats This calculator can display up to 10 digits. Larger values are automatically displayed using exponential notation. In the case of decimal value, you can select between two formats that determine at what point exponential - Casio FX 260 | User Manual - Page 27
. 1 \ 200 = 5. -03 NORM 1 format 0.005 NORM 2 format • All of the examples in this manual show calculation results using the NORM 1 format. kWhen you have a problem... If calculation results are not what you expect or if an error occurs, perform the following steps. 1. F 0 (COMP mode - Casio FX 260 | User Manual - Page 28
or final) or a total accumulated in memor y is greater than ±9.999999999 ҂ 1099. ("-E-" indicator appears on the display.) b. When function calculations are performed using a value that exceeds the input range. ("-E-" indicator appears on the display.) c. When an illogical operation (such as an - Casio FX 260 | User Manual - Page 29
fx-85B/fx-280 This calculator is powered by the CASIO TWO- 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 - Casio FX 260 | User Manual - Page 30
three years, regardless of how much the calculator is used. Old batteries may leak, causing serious damage to the interior of the calculator. • The battery that comes with the calculator when you purchase it is for testing only. It may not provide full service life. • Low bettery power can cause - Casio FX 260 | User Manual - Page 31
are performed in the following order of prec- edence. 1. Functions 2. xy, x1/y, R →P, P →R, nPr, nCr There are six reg- 1 6 isters, so calculations up to six levels can be stored. • Each up to 18 times. • Example: The following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 - Casio FX 260 | User Manual - Page 32
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°. The calculation range is the same for radians and grads - Casio FX 260 | User Manual - Page 33
Permutation • Input range: n ͧ r ͧ 0 (n, r : integers) • Formula: nPr ҃ n! (nҀr)! Combination • Input range: n ͧ r ͧ 0 (n, r : integers) • Formula: nCr ҃ n! n!(nҀr)! Population Standard Deviation n ⌺ (xi - x)2 n ҃ i ҃ 1 ҃ ⌺ x2 - (⌺x)2 / n n n Sample Standard Deviation n n - - Casio FX 260 | User Manual - Page 34
Power Supply : fx-82SOLAR/fx-260SOLAR : Solar cell fx-85B/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 - Casio FX 260 | User Manual - Page 35
Functions Input Range tanh-1x ȊxȊ 1 logx/lnx 1҂ 10-99 ͨ x 1 ҂ 10100 10x -1҂ 10100 x 100 ex -1҂ 10100 x ͨ 230.2585092 x 0 ͨ x 1 ҂ 10100 x2 ȊxȊ 1҂ 1050 x3 ȊxȊ 2. 10 or fewer (including separator °' " symbols). Decimal ↔ Sexagesimal Conversions ȊxȊͨ 2777777.777 - 33 - - Casio FX 260 | User Manual - Page 36
Functions Input Range x 0: -1҂10100 y log x 100 x ҃ 0: y 0 xy x 0: y ҃ n; 1 2nѿ1 (n is an integer) However: -1҂10100 y log ȊxȊ100 x 0:y : n ≠ 0, 1 • Errors are cumulative with such internal continuous calculations as xy, x1/y, x!, and 3 x, so accuracy may be adversely - Casio FX 260 | User Manual - Page 37
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 - Casio FX 260 | User Manual - Page 38
CASIO COMPUTER CO., LTD. 6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan SA9709-C Printed in China Imprimé en Chine
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