ENGLISH / : Appears when the entire equation cannot be displayed. Press to see the remaining (hidden) section. : Indicates that data can be visible above/below the screen. These indications may appear when menu, multi-line playback, and statistics data are displayed. Press [/] to scroll up/down the view. SCIENTIFIC CALCULATOR EL-509W EL-531W EL-531WG MODEL EL-531WH OPERATION MANUAL PRINTED IN CHINA / IMPRIMÉ EN CHINE / IMPRESO EN CHINA 04LGK (TINSE0706EH02) 2ndF HYP : Appears when @ is pressed, indicating that the functions shown in orange are enabled. : Indicates that h has been pressed and the hyperbolic functions are enabled. If @H are pressed, the symbols "2ndF HYP" appear, indicating that inverse hyperbolic functions are enabled. ALPHA: Indicates that K (STAT VAR), O or R has been pressed, and entry (recall) of memory contents and recall of statistics can be performed. FIX/SCI/ENG: Indicates the notation used to display a value and changes by SET UP menu. DEG/RAD/GRAD: Indicates angular units and changes each time G is pressed. STAT INTRODUCTION Thank you for purchasing the SHARP Scientific Calculator Model EL-509W/531W/531WG/531WH. About the calculation examples (including some formulas and tables), refer to the reverse side of this English manual. Refer to the number on the right of each title on the manual for use. After reading this manual, store it in a convenient location for future reference. Note: Some of the models described in this manual may not be available in some countries. : Appears when statistics mode is selected. : Indicates that a numerical value is stored in the independent memory. M BEFORE USING THE CALCULATOR Key Notation Used in this Manual In this manual, key operations are described as follows: To specify ex : To specify ln : To specify F : @e I Kü Operational Notes · Do not carry the calculator around in your back pocket, as it may break when you sit down. The display is made of glass and is particularly fragile. · Keep the calculator away from extreme heat such as on a car dashboard or near a heater, and avoid exposing it to excessively humid or dusty environments. · Since this product is not waterproof, do not use it or store it where fluids, 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 fire. · Keep batteries out of the reach of children. · This product, including accessories, may change due to upgrading without prior notice. Functions that are printed in orange above the key require @ to be pressed first before the key. When you specify the memory, press K first. Numbers for input value are not shown as keys, but as ordinary numbers. Power On and Off Press ª to turn the calculator on, and @F to turn it off. Clearing the Entry and Memories Clearing methods are described in the table as follows: Clearing operation ª @c @00*6 @10*7 RESET switch : Clear × : Retain Independent memory M. Temporary memory A-F, X and Y. Last answer memory. Statistical data (entered data). x, sx, x, n, x, x 2, ¯ , sy, y, y, y 2, xy, r, a, b, c. ¯ y All variables are cleared. See `About the Memory clear key' for details. *7 This key combination functions the same as the RESET switch. See `About the Memory clear key' for details. *1 *2 *3 *4 *5 *6 [About the Memory clear key] Press @ to display the menu. Entry (Display) M*1 × × A-F, X,Y*2 STAT*4 ANS*3 STAT VAR*5 × × NOTICE · SHARP strongly recommends that separate permanent written records be kept of all important data. Data may be lost or altered in virtually any electronic memory product under certain circumstances. Therefore, SHARP assumes no responsibility for data lost or otherwise rendered unusable whether as a result of improper use, repairs, defects, battery replacement, use after the specified battery life has expired, or any other cause. · SHARP will not be liable nor responsible for any incidental or consequential economic or property damage caused by misuse and/or malfunctions of this product and its peripherals, unless such liability is acknowledged by law. Press the RESET switch (on the back), with the tip of a ballpoint pen or similar object, only in the following cases. Do not use an object with a breakable or sharp tip. Note that pressing the RESET switch erases all data stored in memory. · When using for the first time · After replacing the batteries · To clear all memory contents · When an abnormal condition occurs and all keys are inoperative. If service should be required on this calculator, use only a SHARP servicing dealer, SHARP approved service facility, or SHARP repair service where available. MEM RESET 0 1 Hard Case · To clear all variables (M, A-F, X, Y, ANS, STAT VAR), press 00 or 0®. · To RESET the calculator, press 10 or 1®. The RESET operation will erase all data stored in memory, and restore the calculator's default setting. Entering and Correcting the Equation [Cursor keys] · Press < or > to move the cursor. You can also return to the equation after getting an answer by pressing > (<). See the next section for using the [ and ] keys. · In the SET UP menu and other locations, use the < or > key to move the flashing cursor, then press ® (= key). If you need to scroll up/down the view, use the [ or ] key. Symbol Equation Display Mantissa Exponent [Insert mode and Overwrite mode in the Equation display] · This calculator has two editing modes: insert mode (default), and overwrite mode. Pressing @` switches between the two modes. A triangular cursor indicates that an entry will be inserted at the cursor, while the rectangular cursor indicates to overwrite preexisting data as you make entries. · To insert a number in the insert mode, move the cursor to the place immediately after where you wish to insert, then make a desired entry. In the overwrite mode, data under the cursor will be overwritten by the number you enter. · This mode setting will be retained until the next RESET operation is executed. DISPLAY · During actual use, not all symbols are displayed at the same time. · Certain inactive symbols may appear visible when viewed from a far off angle. · Only the symbols required for the usage under instruction are shown in the display and calculation examples of this manual. [Deletion key] · To delete a number/function, move the cursor to the number/function you wish to delete, then press d. If the cursor is located at the right end of an equation, the d key will function as a back space key. Determination of the Angular Unit In this calculator, the following three angular units (degrees, radians, and grads) can be specified. DEG (°) Multi-line Playback function This calculator is equipped with a function to recall previous equations in the normal mode. Equations also include calculation ending instructions such as "=" and a maximum of 142 characters can be stored in memory. When the memory is full, stored equations are deleted in the order of the oldest first. Pressing [ will display the previous equation and the answer. Further pressing [ will display preceding equations (after returning to the previous equation, press ] to view equations in order). In addition, @[ can be used to jump to the oldest equation. · To edit an equation after recalling it, press > (<). · To edit the displayed equation, press > (<) immediately after obtaining a calculation answer. · The multi-line memory is cleared by the following operations: @c, @F (including the Automatic Power Off feature), mode change, memory clear (@), RESET, @ `, K (R) ?, constant calculation, chain calculation, angle unit conversion, coordinate conversion, N-base conversion, numerical value storage to the temporary memories and independent memory, and input/deletion of statistical data. Press G GRAD (g) RAD (rad) SCIENTIFIC CALCULATIONS · Press m0 to select the normal mode. · In each example, press ª to clear the display. And if the FIX, SCI, or ENG indicator is displayed, clear the indicator by selecting `NORM1' from the SET UP menu. Arithmetic Operations · The closing parenthesis ) just before = or ; may be omitted. Constant Calculations · In constant calculations, the addend becomes a constant. Subtraction and division are performed in the same manner. For multiplication, the multiplicand becomes a constant. · When performing calculations using constants, constants will be displayed as K. Priority Levels in Calculation This calculator performs operations according to the following priority: Q Fractions (1l4, etc.) W Functions preceded by their argument (x-1, x2, n!, etc.) E Yx, x¿ R Implied multiplication of a memory value (2Y, etc.) T Functions followed by their argument (sin, cos, etc.) Y Implied multiplication of a function (2sin30, etc.) U nCr, nPr I ×, ÷ O +, ­ P AND { OR, XOR, XNOR } =, M+, M­, M, |DEG, |RAD, |GRAD, DATA, CD, r, xy and other calculation ending instructions · If parentheses are used, parenthesized calculations have precedence over any other calculations. Functions · Refer to the calculation examples of each function. · Before starting calculations, specify the angular unit. Random Function The Random function has four settings for use in the normal or statistics mode. (This function cannot be selected while using the N-Base function.) Press ª to exit. · The generated pseudo-random number series is stored in memory Y. Each random number is based on a number series. [Random Numbers] A pseudo-random number, with three significant digits from 0 up to 0.999, can be generated by pressing @`0®. To generate the next random number, press ®. [Random Dice] To simulate a die-rolling, a random integer between 1 and 6 can be generated by pressing @`1®. To generate the next random dice number, press ®. [Random Coin] To simulate a coin flip, 0 (head) or 1 (tail) can be randomly generated by pressing @`2®. To generate the next random coin number, press ®. [Random Integer] An integer between 0 and 99 can be generated randomly by pressing @`3®. To generate the next random integer number, press ®. INITIAL SET UP Mode Selection Normal mode (NORMAL): m0 Used to perform arithmetic operations and function calculations. Statistics mode (STAT): m1 Used to perform statistical calculations. When executing mode selection, temporary memories, statistical variables, statistical data and last answer memory will be cleared even when reselecting the same mode. SET UP menu Press " to display the SET UP menu. FSE TAB 0 · A menu item can be selected by: · moving the flashing cursor by using ><, then press ® (= key), or · pressing the number key corresponding to the menu item number. or is displayed on the screen, press [ or ] to · If view the previous/next menu screen. · Press ª to exit the SET UP menu. [Selecting the Display Notation and Decimal Places] The calculator has four display notation systems (Floating point, Fixed decimal point, Scientific notation and Engineering notation) for displaying calculation results. · When the FIX, SCI, or ENG symbol is displayed, the number of decimal places (TAB) can be set to any value between 0 and 9. Displayed values will be reduced to the corresponding number of digits. · If a floating point number does not fit in the specified range, the calculator will display the result using the scientific notation (exponential notation) system. See `Setting the Floating Point Numbers System in Scientific Notation' for details. · Press ", followed by 0, to display the following submenu: FIX SCI ENG NORM1 NORM2 ] Angular Unit Conversions Each time @g are pressed, the angular unit changes in sequence. Memory Calculations This calculator has 8 temporary memories (A-F, X and Y), one independent memory (M) and one last answer memory (ANS). The independent memory and temporary memories are only available in the normal mode. [Temporary memories (A-F, X and Y)] Press O and a corresponding variable key to store a value in memory. Press R and a corresponding variable key to recall a value from the memory. To place a variable in an equation, press K, followed by a desired variable key. [Independent memory (M)] In addition to all the features of temporary memories, a value can be added to or subtracted from an existing memory value. Press ªOM to clear the independent memory (M). [Last answer memory (ANS)] The calculation result obtained by pressing = or any other calculation ending instruction is automatically stored in the last answer memory. Note: · Calculation results from the functions indicated below are automatically stored in memories X or Y. For this reason, when using these functions, be careful with the use of memories X and Y. · Random function ................. Y memory · r, xy ................................ X memory (r or x), Y memory ...