Casio FX 260 - Solar Scientific Calculator User Manual Download

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— 3 —

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 of this manual may be reproduced in any form

without the express written consent of the manufacturer.

• Keep this manual on hand for future reference.

Modes

* Display indicators show current mode setting. Absence of

display indicator indicates COMP Mode.

Key

Operation

Mode

Name*

Standard deviation calculations

Normal calculations

Calculations using grads

Calculations using radians

Number of decimal place
specification

Number of significant digit
specification

Cancels FIX and SCI settings

Calculations using degrees

F0
F4
F5
F6

COMP

DEG

RAD

GRA

FIX

SCI

Application

NORM

Summary of Contents for FX 260 - Solar Scientific Calculator

Page 1: ...NQPOR fx 82SOLAR fx 85B fx 260SOLAR fx 280 ...

Page 2: ...fx 82SOLAR fx 260SOLAR fx 85B fx 280 ENGLISH 1 ESPAÑOL 36 FRANÇAIS 73 DEUTSCH 110 ITALIANO 147 ...

Page 3: ...nstant Calculations 6 Memory Calculations 7 Fraction Calculations 9 Percentage Calculations 10 Scientific Function Calculations 11 Statistical Calculations SD Mode 18 Technical Information 21 CASIO ELECTRONICS CO LTD Unit 6 1000 North Circular Road London NW2 7JD U K ...

Page 4: ...at all your key opera tions are being performed correctly Never leave the dead battery fx 85B fx 280 in the battery compartment It can leak and damage the unit Avoid using volatile liquids such as thinner or benzine to clean the unit Wipe it with a soft cloth or with a cloth that has been dipped in a solution of water and a neutral deter gent and wring out In no event will the manufacturer and its...

Page 5: ...ufacturer Keep this manual on hand for future reference Modes Display indicators show current mode setting Absence of display indicator indicates COMP Mode Key Operation Mode Name Standard deviation calculations Normal calculations Calculations using grads Calculations using radians Number of decimal place specification Number of significant digit specification Cancels FIX and SCI settings Calcula...

Page 6: ...n 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 ...

Page 7: ...e 1 23 4 5 53 23 4 5 53 Example 2 56 12 2 5 56 12 E 2 5 E Example 3 2 3 1 1020 2 3 1 e 20 Example 4 7 8 4 5 36 7 8 4 5 Example 5 0 3 4 5 6 A N Example 6 2 7 6 5 4 122 2 O 7 6 O 5 4 P P You can skip all P operations before the key 122 0 3 6 4 5 36 25 5 6 66666666719 268 8 ...

Page 8: ...ber a constant K is on the display while a constant is being used Use the COMP mode for constant calculations Example 1 2 3 3 then 2 3 6 2 3 3 2 3 3 2 3 6 6 Example 2 12 2 3 then 12 9 12 2 3 12 2 3 12 9 9 E Example 3 17 17 17 17 68 17 17 17 17 17 17 17 17 17 17 523 5987756 K 8 3 K 27 6 K 108 K 5 3 K 34 K 68 K 51 ...

Page 9: ...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 53 6 23 8 56 2 99 4 210 75 53 6 53 6 A Y 23 8 23 8 56 2 56 2 99 4 99 4 Memory recall Z Example 2 To calculate the following using memory as shown M 59 M 15 M 112 M 24 75 M 210 75 ...

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 Example 1 To input 123 in memory A t 123 A J 1 MK 135 MK 234 MK 135 M 13 MK 36 123 ...

Page 11: ...fraction calculations Total number of digits including division marks cannot exceed 10 Example 1 1 2 C 3 4 C 5 Example 2 3 1 4 3 C 1 C 4 1 C 2 C 3 Example 3 2 C 4 Example 4 1 6 2 1 1 C 2 1 6 Fraction decimal calculation result is always decimal 123 2 3 4 5 1 7 15 4 11 12 1 4 2 3 11 12 2 4 1 2 1 2 1 2 56088 56088 7 15 2 1 2 4 ...

Page 12: ... B Percentage Calculations Use COMP mode for percentage calculations Example 1 To calculate 12 of 1500 1500 12 A v Example 2 To calculate what percentage of 880 is 660 660 880 A v Example 3 To add 15 onto 2500 2500 15 A v 5 3 1 2 3 0 5 1 2 3 1 2 1 2 1 2 2 3 5 3 180 75 2875 ...

Page 13: ... 1200 12 A v 18 18 A v 23 23 A v 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 26 49 10 14 I 25 I 36 I 12 I 23 I 34 I 2625 K 144 K 216 K 276 26 49 10 ...

Page 14: ...21 I S Example 4 1 23 1 13 48 1 23 I I I Example 5 12 34 12 56666667 12 I 34 I A O You can also use I when inputting values to convert be tween sexagesimal and decimal kTrigonometric InverseTrigonometric Functions Example 1 sin rad RAD mode A x 6 S 0 5 5 594166667 0 999447513 1 13 48 1 23 1 13 48 12 56666667 RAD 6 ...

Page 15: ...mode 2 A L 2 A V Example 5 To convert 45 degrees to radians grads and back to degrees F 4 45 A F 5 A F 6 A F 4 Repeated conversion between angle units can cause nor mally minute error to accumulate resulting in poor preci sion 0 440283084 0 612800788 DEG GRA RAD 2 2 0 785398163 45 DEG 0 785398163 50 45 DEG RAD GRA ...

Page 16: ...mmon and Natural Logarithms Exponents Example 1 log 1 23 1 23 R Example 2 In 90 loge 90 90 T Example 3 64 R 4 R Example 4 100 4 5 e 3 4 A Q 5 3 E A U Example 5 23 2 w 3 Example 6 2 3 2 w 3 E Example 7 e10 10 A U 3 Iog 64 Iog 4 22026 46579 0 125 8 2 760821773 4 49980967 0 089905111 4 094622224 18 28545536 ...

Page 17: ...3 kSquare Roots Cube Roots Squares Reciprocals and Factorials Example 1 2 3 5 2 A L 3 A L 5 A L Example 2 3 5 3 27 5 A D 27 E A D Example 3 123 302 123 30 K Example 4 3 A X 4 A X A X DEG DEG 12 1 1 3 4 1 0 526540784 0 278567983 5 287196909 1023 1 290024053 2 To convert to antilogarithm ...

Page 18: ...aces FIX 2 F 7 2 1 234 1 234 Example 2 1 234 1 234 rounding input to two places F 7 2 1 234 A b 1 234 A b Press F 9 to clear FIX specification Example 3 1 3 displaying result with two significant digits SCI 2 F 8 2 1 3 Press F 9 to clear SCI specification 0 00 2 47 FIX FIX 2 46 FIX 0 0 00 3 3 01 SCI SCI 40320 ...

Page 19: ...000 and 0 999 Example results differ each time A c kCoordinate Conversion Example 1 To convert polar coordinates r 2 60 to rectangular coordinates x y DEG mode x 2 A z 60 y A N A N swaps displayed value with value in memory Example 2 To convert rectangular coordinates 1 3 to polar coordinates r RAD mode r 1 A y 3 A L 56 088 03 81 25 03 0 664 1 DEG 1 732050808 DEG RAD 2 ...

Page 20: ...groups can be organized in a group of 10 individuals 10 A n 4 Statistical Calculations SD Mode Press F l to enter the SD Mode for statistical calcula tions 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 n 1 n o n x and x2 for the following data 55 54 51 55 53 53 54 52 Enter SD Mode F l 840 210 0 SD RAD 1 047197551 ...

Page 21: ...squares of values A a 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 shown above To delete data you have just input press A 1 407885953 SD 1 316956719 SD 8 SD 427 SD 22805 SD 53 375 SD 52 SD ...

Page 22: ...ut Example 1 To change data you have just input Correction Actual Correction 51 50 A 51 130 31 130 31 120 120 31 t130 31 t130 31 51 130 31 49 120 30 49 A 51 120 30 A 130 31 Correct Actual Correct Example 2 To change data you previously input ...

Page 23: ...ic 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 ...

Page 24: ...rnal 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 A Q Common logarithm R Convert to degrees A F 4 Convert to grads A F 6 Convert to radians A F 5 Cosine W ...

Page 25: ...ction 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 A L Tangent h Permutation A m Combination A n ...

Page 26: ...er 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 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 automatical...

Page 27: ...a problem If calculation results are not what you expect or if an error occurs perform the following steps 1 F 0 COMP mode 2 F 4 DEG mode 3 F 9 NORM mode 4 Check the formula you are working with to confirm it is correct 5 Enter the correct modes to perform the calculation and try again kMaking Corrections During Calculations If you make a mistake when inputting a value but did not yet press an ope...

Page 28: ...ccumulated 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 attempt to calcu late o and σn while n 0 is performed during statistical calculations E indicator appears on the display d When an illegal mathemati...

Page 29: ...de power If available light is too low the display may become dim calculation functions may become impossible or the con tents of the independent memory may be lost If this happens move to an area with more light 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 conte...

Page 30: ... lost completely Always keep written records of all important data Always be sure to load the battery with its positive side facing up so you can see it Never try to charge batteries take them apart or allow them to become shorted Keep batteries away from direct flame and heat Keep batteries out of the reach of small children If swallowed consult with your physician immediately To replace the batt...

Page 31: ...first If parentheses are nested the operations en closed in the innermost set of parentheses are performed first Registers L1 through L6 store operations There are six reg 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 O O...

Page 32: ... 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 y Y X 0 P x y x r Y Pol Rec X 0 θ θ P r Register Contents x L1 L2 L3 L4 L5 L6 4 5 4 3 2 ...

Page 33: ...nge n r 0 n r integers Formula nPr Combination Input range n r 0 n r integers Formula nCr Population Standard Deviation n n i 1 n xi x 2 n x2 x 2 n Sample Standard Deviation n 1 n 1 i 1 n xi x 2 x2 x 2 n n 1 Arithmetic Mean o n i 1 n xi x n ...

Page 34: ...s 1 hour use per day on LR44 SR44 battery Input Ranges tan 1 x sinhx coshx tanhx sinh 1x cosh 1x x 1 10100 x 230 2585092 x 1 10100 For sinh and tanh errors are cumulative and ac curacy is affected at a certain point when x 0 x 5 1099 1 x 5 1099 sinx cosx tanx sin 1x cos 1 x x 1 DEG x 9 109 RAD x 5 107 rad GRA x 1 1010 grad However for tan x x 90 2n 1 DEG x 2 2n 1 RAD x 100 2n 1 GRA Functions Input...

Page 35: ...ger tanh 1x logx lnx 10x ex x x2 x3 1 x 3 x x nPr nCr R P P R x2 y2 1 10100 0 r 1 10100 DEG 9 109 RAD 5 107 rad GRA 1 1010 grad However for tan 90 2n 1 DEG 2 2n 1 RAD 100 2n 1 GRA Input and Results Total of hour minutes and seconds digits must be 10 or fewer including separator symbols Decimal Sexagesimal Conversions x 2777777 777 0 r n n 1 1010 n and r are integers ...

Page 36: ...ominator must be 10 digits or less including division marks x 0 y 0 1 10100 1 y log x 100 x 0 y 0 x 0 y 2n 1 n 0 n is an integer However 1 10100 1 ylog x 100 xy x1 y ab c SD 1 2n 1 1 n x 1 1050 n 1 10100 n o n 0 n 1 n 0 1 Errors are cumulative with such internal continuous calculations as xy x1 y x and 3 x so accuracy may be adversely affected ...

Page 37: ...5 D mm 5 16 H 2 5 8 W 4 15 16 D fx 85B fx 280 13 5 H 73 W 144 5 D mm 1 2 H 2 7 8 W 5 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 expo nent up to 10 99 ...

Page 38: ...SA9709 C Printed in China Imprimé en Chine CASIO COMPUTER CO LTD 6 2 Hon machi 1 chome Shibuya ku Tokyo 151 8543 Japan ...

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