Casio FX-250HC Calculator
Contents
1. HCombination Example To determine how many different 4 member groups can be organized in a group of 10 individuals CL Statisticasi Calculations SD Mode Press Jto enter the SD Mode for statistical calcula tions using standard deviation If FIX or SCI is on the display press tred 9 J first Data input always starts with Emma Example To calculate on 1 on x n Xx and Xx for the following data 55 54 51 55 53 53 54 52 SD l Enter SD Mode move e Input Data sur SAC 55 DATA 54 pata 51 pata 55 para 53 para para 54 baa 52 fay 52 SD Sample standard deviation EM Ga 07885953 Population standard deviation EH Lon 1 31695671 9 ie siue kal Arithmetic mean Number of data Sa C2 SD Sum of values que Ex 427 SD Sum of squares of values Barr e 22805 inputs the same data twice as above You can also input multiple entries of the same data using E3 To input the data 110 ten times for example press 110 E310 bx The above results can be obtained in any order and not necessarily that shown above To delete data you have just input press a0 i7 HMaking Corrections During Data Input Example 1 To change data you have just input2. HTrigonometric lnverse Trigonometric Functions Example 1 sin 5 rad RAD mode on Os E3 o5 Example 2 cos 63 52 41 DEG mode 63 3 5269 41 0 440283084 Example 3 tan 35gra GRA mode 35 A m GRA 0 612800788 Example 4 cos Crac RAD mode RAD 20 268 5755598163 Sit o HHyperbolic lnverse Hyperbolic Functions Example 1 sinh 3 6 3 6 hm sn Example 2 sinh 30 30 hw amp r si HCommon and Natural Logarithms Exponents Example 1 log 1 23 1 23 Uo Example 2 In 90 log 90 90 is Td Example 3 534 640 E34 Cu 3 Example 4 10 5 e A ur 10 5E3 362 M E3 2760821773 Example 5 28 2 Eur wa 8 38 0 125 J 22026 46579 Example 6 2 2 ard a Example 7 e 10 suey id Example 8 log sin 40 log cos 35 DEG mode a a E335 o 275567993 DEG 0 526540784 Example 9 8 s amp c sE 2 E Square Roots Cube Roots Squares Reciprocals and Factorials 40 s To convert to antilogarithm swt a Example 1 2 3 x V5 20830 E3 5 7PD B 5287196909 Example 2 5 5 5 27 5 fa Y 27 GA Gr O ES 1 290024053 Example 3 1234 30 123 3 30 6 67 B 1023 NEC MAT Example4 1 1 4 SES CO
3. Correct Actual Correction 51 an 50 ba SWA DEL 51 130 120 E3130 E3 31 Ga 81 130 120 69130 E3 31 bay 31 31 Example 2 To change data you previously input Correct Actual Correction 51 au 49 pata 49 Gra DEL 51 9 130 120069 120 3 30 9 baj130 ES 31 om 30 an 31 Dan Technical Information HKey and Their Functions General Arithmetic calculations C3 E3 6 6 ig Clear retains memory Number input coii cade 0 9 C Power off OF Power on All clear SIQM CHANGE iens teen 4 Memory Memory in O win Memory minus Memory plus Memory recall 2 2 2o Special Decimal to sexagesimal Gur 3 Display memory swap Gur er Ga ew EXPONE ME es i ieri Be Internal rounding Gm ro Parentheses e Ca Pi 3 1415926536 oo ccc essere Gar x Select mode nid ec taies pos Sexagesimal to decimal Cr Shifts key functions sssssss Gan Scientific Functions Arc cosine AIG SING uipin Arc tangent Common antilogarith Common logarithm Cosine Cube root Engineering Fact
4. DEG 6 lt 9x10 o 90 2n 1 DEG RAD 6 lt 5x 1077 rad 0 2 2n 1 RAD GRA 6 1x10 grad 6 100 2n 1 GRA Sexagesimal a b c 10 0 lt b c 7 Decimal lt 2 777777777x 10 x 20 1x10 9 lt y log x 100 x 0 y gt 0 x LO y n 5 44 7 is an integer However 1 x10 lt y log x 100 Functions Input Range x gt 0 y 0 1x10 lt 1 y log x 100 y x 0 y gt 0 4 ki x lt O y 2n 1 n 0 n is an integer However 1 x 101 1 y log x lt 100 Total of integer numerator and denominator a fc must be 10 digits or less including division marks x 1x 1059 SD n 1x10 On X n 0 on in 0 1 Errors are cumulative with such internal continuous calculations as x x x and x so accuracy may be adversely affected Operating Temperature 0 C 40 C 32 F 104 F Dimensions 19 H X73 W x147 D mm Weight 104g including batteries 91 Calculation Capacity Input Basic Calculations 10 digit mantissa or 10 digit mantissa plus 2 digit expo nent up to 10 2 49 CASIO 6 2 Hon machi 1 chome CASIO COMPUTER CO LTD Shibuya ku Tokyo 151 8543 Japan SA9707 B Printed in China Imprim en Chine
5. Press OF to turn power off Power automatically turns off but data in memory is re tained if no key operation is performed for about six minutes Important Incorrect use of batteries can cause them to burst or leak possible damaging the calculator Be sure to replace the batteries at least once every two years regardless of how much the calculator is used Old batteries may leak causing serious damage to the interior of the calculator 24 The batteries that come in the calculator when you pur chase it are for testing only They may not provide full service life All data stored in memory is lost when you replace the batteries Be sure to write down important data before re placing the batteries Always be sure to load the batteries so their positive and negative ends are facing correctly Never mix batteries of different types Never mix new batteries with old ones 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 batteries 1 CA Remove the old batteries Install two new batteries with the Replace the back cover and Press Gio turn power on Press F to turn power off Remove the screws that hold the back cover in place and then re move the cover positive and nega
6. 2 3 6 2 3 3 2 3 38 I eg Example 2 12x2 3 then 12x 9 12x23 2B E325 E 3 cec TL Example 3 17 17 17 17 68 17447417417 ge Example 4 1 74 8 3521 an 7808 1 73 ge K 4 913 1 7 e K 8 3521 6 Memory Calculations Use the COMP mode for memory calculations Use Min M amp r M and me for memory calculations Min replaces current memory contents M appears when there is a value in memory To clear memory press 0 min or EQ vin Example 1 53 6 23 8 56 x2 99 4 210 75 63 6 53 E3 c E3 v M 59 E 23 8 23 E3 8 M M 15 56x2 56 E3 2 M M 112 99 4 99 E34 M M 24 75 Memory recall m M 210 75 Example 2 To calculate the following using memory as shown 7 7 7 2x3 2x3 2x3 13 LII l l JI l JL I TS IT FW M 7 in M fa M 2 3 M M Gar M ma M 13 Example 3 To calculate the following using memory and a constant 12x 3 45x3 78x 3 135 12x3 3E3 E3 12 im MK 36 45 x3 45 Eu ME MK 435 78 x3 78 M MK 234 Memory recall MR MK 135 Fraction Calculations Use COMP mode for fraction calculations Total number of digits including division marks cannot exceed 10 w SO je Example 1 3 5 135 293634458 127 15 com LE E
7. EM ES COM en x 18 Example 5 8 8 baj xt 40320 WFIX SCI NORM RND RAN ENG Calculations Example 1 1 234 1 234 rounding result to two places FIX 2 Example 2 1 FIX eu e FIX 234 1 234 rounding input to two places C7 2 1 234 Gur fw ge 1 234 Gra ano FIX 2 46 Press 9 to clear FIX specification Example 3 1 3 displaying result with two significant digits SCI 2 Press wx s SCI ee to clear SCI specification Example 4 To convert 56 088 meters to kilometers 56088 lene 56 088 44 Example 5 To convert 0 08125 grams to milligrams 08125 Les 81 25 Example 6 To generate a random number between 0 000 and 0 999 Example results differ each time iia na 0 664 Coordinate Conversion Example 1 To convert polar coordinates r 2 0 60 to rectangular coordinates x y DEG mode CCC murs SHIFT X Y DEG y 1 732050808 amp eX x ewaps displayed value with value in memory Example 2 To convert rectangular coordinates 1 V3 to polar coordinates r 0 RAD mode RAD 6 en 1 047197551 HPermutation Example To determine how many different 4 digit values can be produced using the numbers 1 through 7 784 15
8. ads move 6 GRA Number of decimal place Go 7 FIX specification Number of significant digit CS SCI specification Cancels FIX and SCI settings Move 9 NORM Display indicators show current mode setting Absence of display indicator indicates COMP Mode 3 Note A mode guide is located above the display screen DEG RAD and GRA modes can be used in combination with the COMP and SD modes wo 9 Jdoes not exit SD mode f oJexits SD mode t o does not clear SCI or FIX specifications Always press before entering DEG RAD and GRA modes Remember to always set the operating mode and angular unit DEG RAD GRA before starting your calculation Basic Calculations Use the COMP mode for basic calculations Example 1 23 4 5 53 230 4505 A 255 Example 2 56x 12 2 5 56 E3126 E3 2 5 2 Example 3 2 3x 1x10 9 268 8 263 E31 20 EJ 6 666666667 Example 4 7x8 4x5 36 rasaae ET L8 os Example 5 4x5 0 3 ase melo Example 6 2x 7 6x 5 4 122 2 7636 5E3 4C ep You can skip all operations before the E key 5 Constant Calculations Press E3 ES EB or ES 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 3 3 then
9. ee e e e e e au a a a a HODE O Comp 4 DEGS ms 7 AX8 SCID SHIFT z o e wo log 1n OFA w si e si at e bye sin cos tan E KA o x3 Ye xr ENG Hn win MR aaa c c GJ CES Hoes D RANE a S 69 E303 CASIO ELECTRONICS CO LTD Unit 6 1000 North Circular Road London NW2 7JD U K ENGLISH 1 DEUTSCH 99 ESPANOL 33 ITALIANO 134 FRANCAIS 66 Contents Handling Precautions 2 Modes 3 Basic Calculations 5 Constant Calculations 6 Memory Calculations 7 Fraction Calculations 8 Percentage Calculations 10 Scientific Function Calculations 11 Statistical Calculations SD Mode 16 Technical Information 18 cum Handling Precautions Your calculator is made up of precision components Never try to take it apart Avoid dropping your calculator and otherwise subjecting it to strong impact Do not store the calculator or leave it in areas exposed to high temperature or humidity or large amounts of dust When exposed to low temperature the calculator may require more time to display results and may even fail to operate Correct operation will resume once the calculator is brought back to normal temperature The display will go blank and keys will not operate during calculations When you are operating the keyboard be sure to watch
10. nPr AA n r Combination Input range n r x 0 n r natural numbers ENDE Formula nCr ie Population Standard Deviation ri xi x YXx Ex m n n On Sample Standard Deviation xi a xy Y x Xxy f n Hn Arithmetic Mean 98 HSpecifications Power supply Two AA size manganese dry batteries Battery Life Power UM 3 or R6P SUM 3 Approximately 9 000 hours continuous operation on type UM 3 11 000 hours continuous operation on R6P SUM 3 Consumption 0 0004W Input Ranges Functions Input Range Sine DEG x 9 x10 However for tan x cosx RAD x lt 5x10 m rad x 90 2n 1 DEG tanx GRA x 1x10 grad x m 2 2n 1 RAD xj 100 2n 1 GRA inir aes k1 cos x tanx k 1 x 10 sinhx For sinh and tanh errors are coshx x lt 230 2585092 cumulative and accuracy is af fected at a certain point when tanhx x 1X 10100 x 0 sinh x lx 5 x 10 cosh x isx 5 x 10 tanh x lt 1 logx Inx 1x 109 x x 1 x 101 10 1x 10 9 x lt 100 29 Functions Input Range 1x 10 9 x E 230 2585092 QOsx 1x 101 yx x x lt 1x 10 ik ea 1x 1010 x 20 8x x lt 1x 10 x OS x E 69 xis an integer O lt r lt n nPrinCr m 1x10 n and rare integers R P ve y1x1019 O r lt 1x10 However for tan a
11. orial Fraction Fraction Hyperbolic Natural antilogarithm Natural logarithm Percent Random number Reciprocal Rectangular to polar Root sristi aiza UU E n E uer uer uer uer End dic Square Square root TANGENT A one beze eee PON MW ANNO NA iere cereis Combination iut nue Statistics SD Mode ur x Cal tan gan Arithmetic mean Eur Data delete Data input ar Number of data 5 m Population standard deviation Sample standard deviation Statistical register clear Sum of squares of values Sum of values AA ADA MExponential 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 notation is used 9 nCr 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 NORM2 With NORM 2 exponential notation is automatically u
12. sed for integer values with more than 10 digits and decimal values with more than nine decimal places To switch between NORM 1 and NORM 2 Press 9 There is no indication on the display of which format is currently in effect but you can determine the setting by performing the following calculation 0 005 NORM 2 format All of the examples in this manual show calculation results using the NORM 1 format MWnhen you have a problem If calculation results are not what you expect or if an error occurs perform the following steps 1 0 COMP mode 2 w9 4 DEG mode 3 v 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 99 HMaking Corrections During Calculations If you make a mistake when inputting a value but did not yet press an arithmetic operator key press to clear the value and then input the correct one In a series of calculations press SB while an intermediate result is displayed to clear only the last calculation per formed To change the operator key ES ES E3 B t 2 gar x etc you just pressed simply press the correct operator key In this case the operator of the last key you press is used but the operation retains the order of precedence of the operation for the first key you pressed Overflow or Error Check The following condi
13. the display to make sure that all your key operations are being performed correctly Never leave dead batteries in the battery compartment They 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 de tergent and wring out In no event will the manufacturer and its suppliers be liable to you or any other person for any damages expenses lost profits lost savings or any other damages arising out of malfunction repairs or battery replacement The user should prepare physical records of data to protect against such data loss Never dispose of batteries the liquid crystal panel or other components by burning them Before assuming malfunction of the unit be sure to care fully reread this manual and ensure that the problem is not due to low battery power 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 Application Secun Standard deviation calculations move e SD Normal calculations woo 0 COMP Calculations using degrees mons 4 DEG Calculations using radians woo 5 RAD Calculations using gr
14. tions make further calculation impossi ble a When a result whether intermediate or final or a total accumulated in memory is greater than 9 999999999 x 10 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 x and on while n 0 is performed during statistical calculations E indicator appears on the display d When an illegal mathematical operation such as division by zero is performed E indicator appears on dis play 23 e The total number of nested parentheses levels exceeds six or when more than 18 pairs of parentheses are used C indicator appears on the display To clear any of the above conditions press and per form the calculation from the beginning In the case of condition e you could also press E This clears the intermediate result just prior to the overflow so you can continue with the calculation from that point No error occurs when the result is within the range of 1x107 to 1x107 Instead the display shows all zeros HPower Supply This calculator is powered by two AA size manganese dry batteries R6P SUM 3 or UM 3 Replace batteries as soon as possible when display characters become dim and difficult to read Press to turn power on
15. tive ends facing correctly secure it in place with the screws 25 MOrder of Operations and Levels Operations are performed in the following order of prec edence 1 Functions 2 x x R gt P P gt R nPr nCr 8 X 4 Operations with the same precedence are performed from left to right with operations enclosed in parentheses per formed first If parentheses are nested the operaitons en closed in the innermost set of parentheses are performed first Registers L through L store operations There are six re gisters 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 x 0 00 3466 5 E3 4 The table below shows register contents following the above input 26 Register Contents ES n a a FLE LANE ur w 6 HFormulas 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 0 can be calculated within a range of 180 lt 180 The calculation range is the same for radians and grads Y Permutation Input range n r 0 n r natural numbers Formula
16. xample 2 37 173 445 3 e 1 e 4 E3 142438 4 11 12 Example 3 4 gt 2 lak 4 244 ep Example 4 e 1 6 2 1 CEEC 2 Fraction decimal calculation result is always decimal Example 5 1l 0 5 Fraction lt gt Decimal 2 16928 142 ak 0 5 ak 152 242 65 Example 6 1 3 3 169293 142 3 SHIFT d c o E W SHIFT d c 11213 Percentage Calculations Use COMP mode for percentage calculations Example 2 To calculate what per Example 3 To add 15 onto 2500 Example 1 To calculate 12 of 1500 1500 E3 12 amp Ce 660 EB 880 fue 2500 ES 15 a Example 4 To discount 3500 by 25 3500 ES 25 x ES 12 of 1200 144 18 of 1200 216 23 of 1200 276 12 18 23 1200 E3 ES 12 amp Ce 18 sur 26 23 sur 26 10 180 centage of 880 is 660 2875 2625 Example 5 To calculate the following using a constant 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 m 8 1415926536 HSexagesimal lt Decimal Conversion Example 14 25 36 lt gt 14 42667 14 3 25 73 36 73 14 42666667 Him 55 14 25 36
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