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- PRINTED IN CHINA / IMPRIMÉ EN CHINE / IMPRESO EN CHINA07BGK (TINSE1278EHZZ)
INTRODUCTION Thank you for purchasing the SHARP Scientiﬁ c CalculatorModel EL-W531/W531G/W531H/W531HA/W535.About the calculation examples (including some formulasand tables), refer to the reverse side of this English manual.Refer to the number on the right of each title in themanual for use.After reading this manual, store it in a convenient location forfuture reference.Notes:• Some of the models described in this manual may not beavailable in some countries.• This product uses a period as a decimal point.Operational Notes • Do not carry the calculator around in your back pocket, as itmay break when you sit down. The display is made of glassand is particularly fragile.• Keep the calculator away from extreme heat such as on acar dashboard or near a heater, and avoid exposing it toexcessively humid or dusty environments.• Since this product is not waterproof, do not use it or storeit where ﬂ uids, for example water, can splash onto it.Raindrops, water spray, juice, coffee, steam, perspiration,etc. will also cause malfunction.• Clean with a soft, dry cloth. Do not use solvents or a wet cloth.• Do not drop it or apply excessive force.• Never dispose of batteries in a ﬁ re.• Keep batteries out of the reach of children.• This product, including accessories, may change due toupgrading without prior notice.NOTICE • SHARP strongly recommends that separate permanentwritten records be kept of all important data. Data may belost or altered in virtually any electronic memory productunder certain circumstances. Therefore, SHARP assumesno responsibility for data lost or otherwise renderedunusable whether as a result of improper use, repairs,defects, battery replacement, use after the speciﬁ edbattery life has expired, or any other cause.• SHARP will not be liable nor responsible for any incidentalor consequential economic or property damage causedby misuse and/or malfunctions of this product and itsperipherals, unless such liability is acknowledged by law.♦ Press the RESET switch (on the back), with the tip of aball-point pen or similar object, only in the following cases.Do not use an object with a breakable or sharp tip. Note thatpressing the RESET switch erases all data stored in memory.• When using for the ﬁ rst time• After replacing the battery• To clear all memory contents• When an abnormal condition occurs and all keys areinoperativeIf service should be required on this calculator, use only aSHARP servicing dealer, SHARP approved service facility, orSHARP repair service where available.Hard Case Remove the hard case, holding it with your ﬁ ngers in thepositions shown below.DISPLAY DotmatrixdisplaySymbolMantissa Exponent• During actual use, not all symbols are displayed at the sametime.• Only the symbols required for the usage under instruction areshown in the display and calculation examples of this manual.//: Indicates that some contents are hidden in thedirections shown.2ndF: Appears when @ is pressed, indicating that thefunctions shown in orange are enabled.HYP: Indicates that H has been pressed and thehyperbolic functions are enabled. If @ > ispressed, the symbols “2ndF HYP” appear, indicatingthat inverse hyperbolic functions are enabled.ALPHA: Indicates that ;, x or t has been pressed,and entry (recall) of memory contents and recall ofstatistics can be performed.DEG/RAD/GRAD: Indicates angular units.BUSY: Appears during the execution of a calculation.W-VIEW: Indicates that the WriteView editor is selected.M: Indicates that a numerical value is stored in theindependent memory (M).ENG/SCI/FIX/N2/N1: Indicates the notation used to display avalue and changes by SET UP menu. N1 is displayedon-screen as “NORM1”, and N2 as “NORM2”.BEFORE USING THE CALCULATOR When using for the ﬁ rst time, press the RESET switch (on theback), with the tip of a ball-point pen or similar object.Adjusting the Display Contrast Press J 3, then + or & to adjust the contrast.Press j to exit.Power On and Off Press j to turn the calculator on. The data that was on-screen when the power was turned off will appear on the display.Press @ o to turn it off.Key Notations Used in this Manual In this manual, key operations are described as follows:To specify ex:@ "To specify ln:iTo specify E:; E• Functions that are printed in orange above the key require@ to be pressed ﬁ rst before the key. When you specify thememory, press ; ﬁ rst. Numbers for input values are notshown as keys, but as ordinary numbers.• Functions that are printed in gray adjacent to the keys areeffective in speciﬁ c modes.The WriteView and Line Editors This calculator has the following two editors in NORMAL mode:WriteView and Line. You can select between them in the SET UPmenu.The WriteView editor (default) The Line editorNote: In certain calculation examples, where you see the osymbol, the key operations and calculation results areshown as they would appear in the Line editor.Clearing the Entry and Memories Operation Entry(Display)A–F*1,M, X, YD1–D4*2ANS STAT*3j ○××××@ Z○××○○Mode selection (b) ○××× ×*5@ P 0*4○××××@ P 1 0*4○○○○○@ P 2 0*4○○○○○RESET switch○○○○○○: Clear×: Retain*1 Press j x and then choose a memory to clear onevariable memory.*2 Deﬁ nable memory. See “Memory Calculations”.*3 Statistical data (entered data)*4 See “Memory clear key”.*5 Cleared when changing between sub-modes in STAT mode.Memory clear keyPress @ P to display the menu.• To initialize the display settings,press 0. The parameters setas follows:• Angular unit: DEG• Display notation: NORM1• N-base: DEC• To clear all variables and memories (A−F, M, X, Y, D1−D4, ANS,and STAT) at once, press 1 0.• To RESET the calculator, press 2 0. The RESEToperation will erase all data stored in memory and restore thecalculator’s default settings.ENTERING, DISPLAYING, AND EDITING THE EQUATION 1The WriteView Editor Entry and displayIn the WriteView editor, you canenter and display fractions or certainfunctions as you would write them.Notes:• The WriteView editor can only beused in NORMAL mode.• If the equation grows too large, it may extend off the edge of thedisplay after you obtain the result. If you want to see the entireequation, press l or r to return to the editing screen.Displaying calculation resultsWhen possible, calculation results will be displayed usingfractions, r, and###### π. When you press U, the display will cycle

through the following display styles:• Mixed fractions (with or without###### π) improper fractions (with

or without###### π) decimal numbers

• Proper fractions (with or without###### π) decimal numbers

• Irrational numbers (square roots, fractions made using squareroots) decimal numbersNotes:• In the following cases, calculation results may be displayedusing r:• Arithmetic operations and memory calculations• Trigonometric calculations• In trigonometric calculations, whenentering values such as those inthe table to the right, results may beshown using r.• Calculation results may extend offthe edges of the screen. You cansee those parts by pressing lor r (depending on whether the left or right portion ishidden).• Improper/proper fractions will be converted to and displayed asdecimal numbers if the number of digits used in their expressionis greater than nine. In the case of mixed fractions, the maximumnumber of displayable digits (including integers) is eight.• If the number of digits in the denominator of a fractional resultthat uses###### π is greater than three, the result is converted to and

displayed as a decimal number.The Line Editor Entry and displayIn the Line editor, you can enter anddisplay equations line by line.Notes:• Up to three lines of text may beviewed on the screen at one time.• If the length of the equation exceeds three lines, parts of it maybe hidden from view after calculation. If you want to see therest of the equation, press l or r to return to the editingscreen.• In the Line editor, calculation results are displayed in decimalform.Editing the Equation Just after obtaining an answer, pressing l brings you tothe end of the equation and pressing r brings you to thebeginning. Press l, r, u, or d to move thecursor. Press @ l or @ r to jump the cursor to thebeginning or the end of the equation.In the WriteView editor, you can use u and d to move thecursor up and down—between the numerator and denominator,for example.Back space and delete keyTo delete a number or function, move the cursor to the right of it,then press N. You can also delete a number or function thatthe cursor is directly over by pressing @ y.Multi-line Playback Function 2This calculator is equipped with a function to recall previousequations and answers in NORMAL mode. A maximum of 340characters can be stored in memory. When the memory is full,stored equations will be deleted to make room, starting with theoldest.Pressing u will display the previous equation. Furtherpressing u will display preceding equations (after returning tothe previous equation, press d to view equations in order). Inaddition, @ u can be used to jump to the oldest equation,and @ d to jump to the newest one.• To edit an equation after recalling it, press l or r.• The multi-line memory will be cleared by the following operations:@ Z , mode change, RESET, N-base conversion,angular unit conversion, editor change (J 2 0 orJ 2 1), and memory clear (@ P 1 0).• Equations that have one result require an additional elevencharacters’ worth of memory to store in order to hold the result.• In addition to the amount of memory needed to store anequation, the WriteView editor will require a certain amount forthe sake of display.• Equations also include calculation ending instructions, such as“=”. Priority Levels in Calculation This calculator performs operations according to the followingpriority:① Fractions (1m4, etc.) ② Functions preceded by their argument(x−1, x2, n!, etc.) ③ yx,xr ④ Implied multiplication of a memoryvalue (2Y, etc.) ⑤ Functions followed by their argument (sin, cos,etc.) ⑥ Implied multiplication of a function (2sin 30, A1⎯4, etc.)⑦ nCr, nPr ⑧×, ÷ ⑨ +, − ⑩ AND ⑪ OR, XOR, XNOR ⑫ =,M+, M−, ⇒M, ▶DEG, ▶RAD, ▶GRAD, DATA, CD, rθ, xy,and other calculation ending instructions• If parentheses are used, parenthesized calculations haveprecedence over any other calculations.INITIAL SET UP Mode Selection NORMAL mode: b 0 (default)Used to perform arithmetic operations and function calculations.STAT mode: b 1Used to perform statistical operations.DRILL mode: b 2Used to practice math and multiplication table drills.SET UP Menu Press J to display the SET UPmenu.Press j to exit the SET UP menu.Determination of the angular unitThe following three angular units (degrees, radians, and grads)can be speciﬁ ed.DEG (°): J 0 0 (default)RAD (rad): J 0 1GRAD (g): J 0 2Selecting the display notation and decimal places3Five display notation systems are used to display calculationresults: Two settings of Floating point (NORM1 and NORM2),Fixed decimal point (FIX), Scientiﬁ c notation (SCI), andEngineering notation (ENG).• When J 1 0 (FIX) or J 1 2 (ENG) ispressed, “TAB(0–9)?” will be displayed and the number ofdecimal places (TAB) can be set to any value between 0 and 9.• When J 1 1 (SCI) is pressed, “SIG(0–9)?” will bedisplayed and the number of signiﬁ cant digits can be set to anyvalue between 0 and 9. Entering 0 will set a 10-digit display.Setting the ﬂ oating point number system in scientiﬁ c notationTwo settings are used to display a ﬂ oating-point number: NORM1(the default) and NORM2. A number is automatically displayed inscientiﬁ c notation outside a preset range:• NORM1 (J 1 3): 0.000000001≤ | x | ≤ 9,999,999,999 • NORM2 (J 1 4): 0.01≤ | x | ≤ 9,999,999,999 Selecting the editorTwo editors are available in NORMAL mode:• The WriteView editor (W-VIEW): J 2 0 (default)• The Line editor (LINE): J 2 1Adjusting the display contrastPress J 3, then + or & to adjust the contrast.Press j to exit.Insert and overwrite entry methodsWhen using the Line editor, you can change the entry methodfrom “INSERT” (the default) to “OVERWRITE”.After you switch to the overwrite method (by pressing J 41), the triangular cursor will change to a rectangular one, andthe number or function underneath it will be overwritten as youmake entries.SCIENTIFIC CALCULATIONS • Press b 0 to select NORMAL mode.• In each example, press j to clear the display ﬁ rst. Unlessotherwise speciﬁ ed, calculation examples are performed in theWriteView editor with the default display settings (@ P0).Arithmetic Operations 4• The closing parenthesis ) just before = or m maybe omitted.Constant Calculations 5• In constant calculations, the addend becomes a constant.Subtraction and division are performed in the same manner.For multiplication, the multiplicand becomes a constant.• In constant calculations, constants will be displayed as K.Functions 6• Refer to the calculation examples for each function.• In the Line editor, the following symbols are used:•: to indicate an expression’s power. (m, @ ",@ Y)• : to separate integers, numerators, and denominators.(W, @ k)• When using @ O or @ W in the Line editor,values are entered in the following way:• logn (base, value)• abs valueRandom Function The random function has four settings. (This function cannotbe selected while using the N-base function.) To generatefurther random numbers in succession, press e. Pressj to exit.Random numbersA pseudo-random number, with three signiﬁ cant digits from 0up to 0.999, can be generated by pressing @ w 0e.Note: In the WriteView editor, the result will be a fraction or 0.Random diceTo simulate a die-rolling, a random integer between 1 and 6can be generated by pressing @ w 1 e.Random coinTo simulate a coin ﬂ ip, 0 (heads) or 1 (tails) can be randomlygenerated by pressing @ w 2 e.Random integerAn integer between 0 and 99 can be generated randomly bypressing @ w 3 e.Angular Unit Conversions 7Each time @ ] is pressed, the angular unit changes insequence.Memory Calculations 8Memory calculations can be performed in NORMAL and STATmodes.Temporary memories (A–F, X and Y)Press x and a variable key to store a value in memory.Press t and a variable key to recall the value from thatmemory. To place a variable in an equation, press ; and avariable key.Independent memory (M)In addition to all the features of temporary memories, a valuecan be added to or subtracted from an existing memory value.Press j x M to clear the independent memory (M).Last answer memory (ANS)The calculation result obtained by pressing = or any othercalculation ending instruction is automatically stored in thelast answer memory.Notes:• Calculation results from the functions indicated below areautomatically stored in the X or Y memories replacing anyexisting values.• rθ, xy: X memory (r or x), Y memory (θ or y)• Twox´ values from a quadratic regression calculation in STAT mode: X memory (1:), Y memory (2:)• Use of t or ; will recall the value stored in memoryusing up to 14 digits.Deﬁ nable memories (D1–D4)You can store functions or operations in deﬁ nable memories(D1–D4).• To store a function or operation, press x, followed bya deﬁ nable memory key (I, J, K, or L),followed by the operation you want to store. Menu-relatedoperations, such as J, cannot be stored. Press j toreturn to the previous display.• To call a stored function or operation, press thecorresponding memory key. Calling a stored function will donothing if the function that is called would be unusable in thecurrent context.• Any functions or operations that are stored in a deﬁ nablememory will be replaced when you save a new one into thatmemory.• When displaying and correcting a data set in STAT mode,you cannot store functions or operations in deﬁ nablememories.Chain Calculations 9The previous calculation result can be used in the subsequentcalculation. However, it cannot be recalled after enteringmultiple instructions.Fraction Calculations 10Arithmetic operations and memory calculations can beperformed using fractions. In NORMAL mode, conversionbetween a decimal number and a fraction can be performedby pressing U.Notes:• Improper/proper fractions will be converted to and displayedas decimal numbers if the number of digits used in theirexpression is greater than nine. In the case of mixedfractions, the maximum number of displayable digits(including integers) is eight.• To convert a sexagesimal value to a fraction, ﬁ rst convert itby pressing @ :.Binary, Pental, Octal, Decimal, and Hexadecimal Operations (N-base) 11Conversions can be performed between N-base numbersin NORMAL mode. The four basic arithmetic operations,calculations with parentheses, and memory calculations canalso be performed, along with the logical operations AND,OR, NOT, NEG, XOR, and XNOR on binary, pental, octal, andhexadecimal numbers.Conversion to each system is performed with the following keys:@ z (“BIN” appears), @ r (“PEN” appears),@ g (“OCT” appears), @ h (“HEX” appears),@ / (“BIN”, “PEN”, “OCT”, and “HEX” disappear)Note: The hexadecimal numbers A–F are entered by pressingmA, *B, AC, lD, iE, and HF.In the binary, pental, octal, and hexadecimal systems,fractional parts cannot be entered. When a decimal numberhaving a fractional part is converted into a binary, pental,octal, or hexadecimal number, the fractional part will betruncated. Likewise, when the result of a binary, pental, octal,or hexadecimal calculation includes a fractional part, thefractional part will be truncated. In the binary, pental, octal,and hexadecimal systems, negative numbers are displayed asa complement.Time, Decimal, and Sexagesimal Calculations 12Conversion between decimal and sexagesimal numbers can beperformed. In addition, the four basic arithmetic operations andmemory calculations can be performed using the sexagesimalsystem. Notation for sexagesimal is as follows:Coordinate Conversions 13• Before performing a calculation, select the angular unit.• The calculation result is automatically stored in the X and Ymemories (r or x in X memory, and θ or y in Y memory).• The results of coordinate conversions will be displayed asdecimal numbers even in the WriteView editor.Rectangular coord. Polar coord.Modify Function 14Decimal calculation results are internally obtained in scientiﬁ cnotation, with up to 14 digits in the mantissa. However, sincecalculation results are displayed in the form designated by thedisplay notation and the number of decimal places indicated,the internal calculation result may differ from that shown in thedisplay. By using the modify function (@ n), the internalvalue is converted to match that of the display, so that thedisplayed value can be used without change in subsequentoperations.• When using the WriteView editor, if the calculation result isdisplayed using fractions or irrational numbers, press Uto convert it to decimal form ﬁ rst.STATISTICAL CALCULATIONS Statistical calculations can be performed in STAT mode.There are eight sub-modes within STAT mode. Press b1, then press the number key that corresponds to yourchoice:0 (S#a# 0 [SD]): Single-variable statistics1 (S#a# 1 [LINE]): Linear regression2 (S#a# 2 [QUAD]): Quadratic regression3 (S#a# 3 [E_EXP]): Euler exponential regression4 (S#a# 4 [LOG]): Logarithmic regression5 (S#a# 5 [POWER]): Power regression6 (S#a# 6 [INV]): Inverse regression7 (S#a# 7 [G_EXP]): General exponential regressionStatistical Calculations and Variables 15The following statistics can be obtained for each statisticalcalculation (refer to the table below):Single-variable statistical calculationStatistics of ①.Linear regression calculationStatistics of ① and ②. In addition, the estimate ofy for a givenx (estimate y´) and the estimate of x for a given y(estimatex´). Quadratic regression calculationStatistics of ① and ②, and coefﬁ cientsa, b, c in the quadratic regression formula (y = a + bx + cx2). (For quadraticregression calculations, no correlation coefﬁ cient (r) can be obtained.) When there are twox´ values, each value will be displayed with “1:” or “2:”, and stored separately in the X andY memories.Euler exponential regression, logarithmic regression,power regression, inverse regression, and generalexponential regression calculationsStatistics of ① and ②. In addition, the estimate ofy for a given x and the estimate of x for a given y. (Since the calculatorconverts each formula into a linear regression formula beforeactual calculation takes place, it obtains all statistics, exceptcoefﬁ cientsa and b, from converted data rather than entered data.)①x–Mean of samples (x data)sx Sample standard deviation (x data) σx Population standard deviation (x data)nNumber of samplesΣx Sum of samples (x data)Σx 2Sum of squares of samples (x data)②y–Mean of samples (y data) sy Sample standard deviation (y data)σy Population standard deviation (y data)Σy Sum of samples (y data)Σy 2Sum of squares of samples (y data)Σx ySum of products of samples (x,y)rCorrelation coefﬁ cientaCoefﬁ cient of regression equationb Coefﬁ cient of regression equation cCoefﬁ cient of quadratic regression equation• Use ; and t to perform a variable calculation in STATmode.• U does not function in STAT mode.Data Entry and Correction 16Before entering new data, clear the memory contents.Data entrySingle-variable dataData _Data H frequency _ (To enter multiples of the samedata)Two-variable dataDatax H data y _Datax H data y H frequency _ (To enter multiplesof the same datax and y) Note: Up to 100 data items can be entered. With the single-variable data, a data item without frequency assignmentis counted as one data item, while an item assigned withfrequency is stored as a set of two data items. With thetwo-variable data, a set of data items without frequencyassignment is counted as two data items, while a set ofitems assigned with frequency is stored as a set of threedata items.Data correctionCorrection before pressing _ immediately after a data entry:Delete incorrect data with j, then enter the correct data.Correction after pressing _:Use u and d to display the previously entered data set.Press d to display the data set in ascending (oldest ﬁ rst)order. To reverse the display order to descending (latest ﬁ rst),press the u key. Press @ u or @ d to jumpthe cursor to the beginning or end of the data set.Each data set is displayed with “X:”, “Y:”, or “F:”.Display and move the cursor to the data item to be modiﬁ edby using u and d, input the correct value, then press_ or e.• To delete a data set, display and move the cursor to an itemof the data set to delete by using u and d, then press@ #. The data set will be deleted.• To add a new data set, press j to exit the display ofpreviously entered data and input the values, then press _.Statistical Calculation Formulas 17Type Regression formulaLineary = a + bxQuadraticy = a + bx + cx2Euler exponentialy = a ⋅ ebxLogarithmicy = a + b ⋅ ln xPowery = a ⋅ xbInversey = a + b1⎯xGeneral exponentialy = a ⋅ bxAn error will occur when:• The absolute value of the intermediate result or calculationresult is equal to or greater than 1× 10 100.• The denominator is zero.• An attempt is made to take the square root of a negativenumber.• No solution exists in the quadratic regression calculation.DRILL MODE Math Drill: b 2 0Math operation questions with positive integers and 0 aredisplayed randomly. It is possible to select the number ofquestions and operator type.Multiplication Table (× Table): b 2 1Questions from each row of the multiplication table (1 to 12) aredisplayed serially or randomly.To exit DRILL mode, press b and select another mode.Using Math Drill and × Table 1. Press b 2 0 for Math Drill or b 2 1 for###### × Tabl e.

2. Math Drill: Use u and d to select the number ofquestions (25, 50, or 100).× Table: Use u and d to select a row in themultiplication table (1 to 12).3. Math Drill: Use l and r to select the operator type forquestions (+, −, ×, ÷, or +−×÷).× Table: Use l and r to select the order type (“Serial”or “Random”).4. Press e to start.When using Math Drill or#### × Table (random order only),

questions are randomly selected and will not repeat exceptby chance.5. Enter your answer. Press j or N to clear the enterednumber and then enter the correct answer.6. Press e.• If the answer is correct, “” appears and the next questionis displayed.• If the answer is wrong, “”appears and the same questionis displayed. This will be regarded as an incorrect answer.• If you press e without entering an answer, the correctanswer is displayed and then the next question is displayed.This will be regarded as an incorrect answer.7. Continue answering the series of questions by entering theanswer and pressing e.8. After you ﬁ nish, press e and the number and percentageof correct answers are displayed.9. Press e to return to the initial screen for your current drill.Math Drill sample⋮⋮###### × Table sample

⋮⋮Ranges of Math Drill Questions The range of questions for each operator type is as follows.+ Addition operator: “0+ 0” to “20 + 20” ] Subtraction operator: “0− 0” to “20 − 20”; answers are positive integers and 0.> Multiplication operator: “1× 0” or “0 × 1” to “12 × 12” ) Division operator: “0÷ 1” to “144 ÷ 12”; answers are positive integers from 1 to 12 and 0, dividends of up to144, and divisors of up to 12.+]>) Mixed operators: Questions within all the aboveranges are displayed.ERRORS AND CALCULATION RANGES Errors An error will occur if an operation exceeds the calculation ranges,or if a mathematically illegal operation is attempted. When an erroroccurs, pressing l or r automatically moves the cursorback to the place in the equation where the error occurred. Editthe equation or press j to clear the equation.Error codes and error typesERROR 01: Syntax error• An attempt was made to perform an invalid operation.Ex. 2 + & 5 =ERROR 02: Calculation error• The absolute value of an intermediate or ﬁ nal calculationresult equals or exceeds 10100.• An attempt was made to divide by zero (or an intermediatecalculation resulted in zero).• The calculation ranges were exceeded while performingcalculations.ERROR 03: Nesting error• The available number of buffers was exceeded. (There are10 buffers for numeric values and 64 buffers for calculationinstructions).ERROR 04: Data over• Data items exceeded 100 in STAT mode.Alert Messages 18Cannot delete!• The selected item cannot be deleted by pressing N or@ y in the WriteView editor.Ex. * 5 r A l NIn this example, delete the exponent before attempting todelete the parentheses.Cannot call!• The function or operation stored in deﬁ nable memory (D1 toD4) cannot be called.Ex. An attempt was made to recall a statistical variable fromwithin NORMAL mode.Buffer full!• The equation (including any calculation ending instructions)exceeded its maximum input buffer (159 characters in theWriteView editor or 161 characters in the Line editor). Anequation may not exceed its maximum input buffer.Calculation Ranges 19• Within the ranges speciﬁ ed, this calculator is accurate to±1 of the 10th digit of the mantissa. However, a calculation error increases in continuous calculations due toaccumulation of each calculation error. (This is the sameforyx,xr, n!, ex, ln, etc., where continuous calculationsare performed internally.)Additionally, a calculation error will accumulate andbecome larger in the vicinity of inﬂ ection points andsingular points of functions.• Calculation ranges±10 −99to ±9.999999999 × 1099and 0.If the absolute value of an entry or a ﬁ nal or intermediateresult of a calculation is less than 10−99, the value isconsidered to be 0 in calculations and in the display.Display of results using rCalculation results may be displayed using r when all of thefollowing conditions are met:• When intermediate and ﬁ nal calculation results are displayedin the following form:±aPb⎯e±cPd⎯f• When each coefﬁ cient falls into the following ranges:1≤ a < 100; 1 < b < 1,000; 0 ≤ c < 100;1≤ d < 1,000; 1 ≤ e < 100; 1 ≤ f < 100• When the number of terms in the intermediate and ﬁ nalcalculation results is one or two.Note: The result of two fractional terms that include r will bereduced to a common denominator.BATTERY REPLACEMENT Notes on Battery Replacement Improper handling of batteries can cause electrolyte leakage orexplosion. Be sure to observe the following handling rules:• Make sure the new battery is the correct type.• When installing, orient the battery properly as indicated in thecalculator.• The battery is factory-installed before shipment, and maybe exhausted before it reaches the service life stated in thespeciﬁ cations.Notes on erasure of memory contentsWhen the battery is replaced, the memory contents areerased. Erasure can also occur if the calculator is defectiveor when it is repaired. Make a note of all important memorycontents in case accidental erasure occurs.When to Replace the Battery EL-W531/W531H/W531HA/W535: If the display has poorcontrast even after adjusting the display contrast, the batteryrequires replacement.EL-W531G: If the display has poor contrast or nothing appearson the display when j is pressed in dim lighting, even afteradjusting the display contrast, it is time to replace the battery.Cautions • Fluid from a leaking battery accidentally entering an eye couldresult in serious injury. Should this occur, wash with cleanwater and immediately consult a doctor.• Should ﬂ uid from a leaking battery come in contact with yourskin or clothes, immediately wash with clean water.• If the product is not to be used for some time, to avoiddamage to the unit from a leaking battery, remove it andstore in a safe place.• Do not leave an exhausted battery inside the product.• Keep batteries out of the reach of children.• An exhausted battery left in the calculator may leak anddamage the calculator.• Explosion risk may be caused by incorrect handling.• Do not throw batteries into a ﬁ re as they may explode.Replacement Procedure 1. Turn the power off by pressing @ o.2. Remove the two screws. (Fig. 1)3. Slide the battery cover slightly and lift it to remove.4. EL-W531/W531G/W535: Remove the used battery byprying it out with a ball-point pen or other similar pointeddevice. (Fig. 2)EL-W531H/W531HA: Remove the used battery.5. EL-W531/W531G/W535: Install one new battery. Make surethe “+” side is facing up.EL-W531H/W531HA: Install one new battery. First insert the“−” side toward the spring. (Fig. 3) 6. Replace the cover and screws.7. Press the RESET switch (on the back) with the tip of aball-point pen or similar object.8. Adjust the display contrast. See “Adjusting the DisplayContrast”.• Make sure that the display appears as shown below. If thedisplay does not appear as shown, remove the battery,reinstall it, and check the display once again.Fig. 1 Fig. 2 Fig. 3Automatic Power Off Function This calculator will turn itself off to save battery power if nokey is pressed for approximately 10 minutes.SPECIFICATIONS Calculation features: Scientiﬁ c calculations, statisticalcalculations, etc.Drill features: Math Drill and Multiplication TableDisplay:96× 32 dot matrix liquid crystal display Display of calculation results:Mantissa: 10 digitsExponent: 2 digitsInternal calculations: Mantissas of up to 14 digitsPending operations: 64 calculations 10 numeric valuesPower source: EL-W531/W5351.5 V …— (DC): Alkaline battery (LR44 orequivalent)× 1 EL-W531GBuilt-in solar cells1.5 V …— (DC): Backup battery(Alkaline battery (LR44 or equivalent)× 1) EL-W531H/W531HA1.5 V …— (DC): Heavy duty manganesebattery (size AAA or R03)× 1 Power consumption: EL-W531/W531H/W531HA/W5350.00011 WOperating time:(varies according touse and other factors)EL-W531/W535Approx. 3,000 hours when continuouslydisplaying 55555. at 25°C (77°F)EL-W531GApprox. 3,000 hours when continuouslydisplaying 55555. at 25°C (77°F), usingthe alkaline battery onlyEL-W531H/W531HAApprox. 17,000 hours when continuouslydisplaying 55555. at 25°C (77°F)Operating temperature:0°C–40°C (32°F–104°F)External dimensions:79.6 mm (W)× 161.5 mm (D) × 15.5 mm (H)3-1/8” (W)× 6-11/32” (D) × 5/8” (H) Weight: EL-W531/W535Approx. 100 g (0.22 lb) (including battery)EL-W531GApprox. 102 g (0.23 lb) (including battery)EL-W531H/W531HAApprox. 107 g (0.24 lb) (including battery)Accessories:Battery× 1 (installed), operation manual, and hard caseFOR MORE INFORMATION ABOUT SCIENTIFIC CALCULATORS Visit our Web site.http://sharp-world.com/calculator/## EL-W531

## EL-W531G

## EL-W531H

## EL-W531HA

## EL-W535

SCIENTIFIC CALCULATOR OPERATION MANUAL MODELENGLISH Total remainingquestionsQuestionSee step 6 above.MultiplicandOrder typePercentage correctCorrect answersCurrent question/Total questionsQuestionSee step 6 above.Number of questionsOperator typePercentage correctCorrect answersEntry valueDEG multiples of 15RADmultiples of1⎯12π GRADmultiples of50⎯3DegreeMinuteSecondData set numberDataxData yFrequencyData set numberDataxFrequency

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Você tem alguma dúvida sobre o Sharp EL-W535XBSL ou precisa de ajuda? Faça sua pergunta aqui. Forneça uma descrição clara e abrangente do problema e sua pergunta. Quanto mais detalhes você fornecer para seu problema e pergunta, mais fácil será para outros proprietários de Sharp EL-W535XBSL responderem adequadamente à sua pergunta.

Veja o manual do Sharp EL-W535XBSL aqui, de graça. Este manual está na categoria Calculadoras e foi avaliado por 1 pessoas com uma média de 7.5. Este manual está disponível nos seguintes idiomas: Inglês. Você tem alguma dúvida sobre o Sharp EL-W535XBSL ou precisa de ajuda? Faça a sua pergunta aqui

Marca | Sharp |

Modelo | EL-W535XBSL |

Produto | Calculadora |

EAN | 74000019164 |

Língua | Inglês |

Tipo de arquivo |

Tipo | Calculadora científica |

Forma | |

Cor do produto | Preto |

Dígitos | 16 dígitos |

Linhas de texto | 3 linhas |

Inclinação do visor | Não |

Desactivação automática | Sim |

Fonte de alimentação | Bateria |

Registos de memória | 9 |

Dimensões do produto (CxLxA) | 168 x 80 x 14 mm |

Peso do produto | 98.5 g |

Conversor de moeda | Não |

Porta USB | Não |

Abaixo, encontrará as perguntas mais frequentes sobre Sharp EL-W535XBSL .

O que é um erro de estouro?

Um erro de estouro geralmente ocorre quando o resultado da soma é maior do que a calculadora pode mostrar.

Uma bateria na minha Calculadora começou a corroer. Ainda é seguro usar o dispositivo?

O produto ainda pode ser usado com segurança após a limpeza adequada. Remova a bateria com luvas e limpe o compartimento da bateria com uma escova de dentes e vinagre. Após a secagem, novas baterias podem ser inseridas no dispositivo.

A sua pergunta não está na lista? Faça a sua pergunta aqui