User Guide SC300i English Français Español Português Italiano Deutsch Nederlands 195mm (W) X 130mm (H) English ...................................................................................... 2 - 10 Français ..................................................................................... 11 - 20 Español ...................................................................................... 21 - 29 Português .................................................................................. 30 - 38 Italiano ...................................................................................... 39 - 50 Deutsch ..................................................................................... 51 - 60 Nederlands ................................................................................ 61 - 70 Instruction Manual LEXIBOOK SC300i Contents INTRODUCTION ABNORMAL CONDITIONS DISPLAY BEFORE USING THE CALCULATOR INITIAL SETUP SCIENTIFIC CALCULATIONS Arithmetic Operations Functions Random Numbers Angular Unit Conversion Memory Calculations Fraction Calculations Time, Decimal and Sexagesimal Calculations Coordinates Conversions Modify Function STATISTICAL CALCULATIONS CURRENCY SETTING AND RECALL ERROR CODES BATTERY REPLACEMENT SPECIFICATIONS CALCULATION EXAMPLES WARRANTY Page 2 2 2 3 3 4 4 4 4 4 4 5 5 5 5 5 6 7 7 8 8 10 INTRODUCTION Thank you very much for purchasing the LEXIBOOK Scientific Calculator SC300I. This manual will introduce you to the SC300I. Please keep this manual for the reference. Operational Notes To ensure trouble-free operation, please observe the following points: 1. Do not carry the calculator in your hip pocket. 2. Do not subject the calculator to humidity and extreme temperature (below 0°C or above 40°C). 3. Do not drop or bend the calculator. 4. Clean only with a soft, dry cloth. Never use volatile fluid such as lacquer, thinner, benzine etc. ABNORMAL CONDITIONS If this calculator is exposed to a powerful external electric field or shock during use, an abnormal condition may occur in which all the keys, including ON/C , do not function. In this case, press the RESET switch on the back of the calculator. Note that the memory contents will be completely cleared when this operation is performed. Press the RESET switch only in the following cases: After replacing the batteries. To clear all memory contents. When an abnormal condition occurs and all keys are inoperative. DISPLAY Appears in the display when the entire equation or the answer cannot be displayed. Appears in the display when [2ndF] is pressed, indicating that the functions written in blue on the calculator are enable. HYP Indicates that [hyp] has been pressed and the hyperbolic functions are enabled. If [2ndF] [hyp] are pressed, the symbols "2ndF HYP" appear, indicating that inverse hyperbolic functions are enabled. ALPHA Indicates that entry and recall of memory contents, and recall of statistics can be performed. FIX SCI ENG Indicates the notation used to display a value. DEG RAD GRAD Indicates angular units. STAT Appears when statistics mode is selected. M Indicates that a numerical value is stored in the independent memory. 2ndF : © Lexibook 2005 2 GB BEFORE USING THE CALCULATOR Before using this calculator for the first time, remove the static label from the LCD screen and pull the battery tab located on the battery door. Once the battery tab is removed, the unit will turn on automatically. Note: If you are unable to pull the battery tab, open the battery door and try again. Key Notation Used in this Manual In this manual, specific notation is used to describe operations made on the calculator. On the front of the calculator you will see some keys (numbers, operations, functions etc.) and some writings (functions, memories etc.) above or on the side of the key. How to use this features will be described as follows: e x 7. x,÷ 8. +, 9. =, %, M+, M-, xy and other calculation ending instruction. Note: -everything included within parentheses receives highest priority. -When functions with the same priority are used in series, execution is performed from right to left. For example, ex ln 120 will be implemented in the sequence of eln 120 . Pending Operations Operations that cannot be performed immediately due to priority levels or to parentheses must be set aside temporarily (pending operations). This calculator can hold up to 16 calculations and up to 8 numeric values. (8 values in normal mode and 4 values in statistics mode.) INITIAL SETUP Mode Selection This calculator can operate in any of the three operation modes described below. To select the mode, press MODE and then the number key corresponding to the desired mode. MODE 1 Normal mode: Used to perform arithmetic operations, substitute arithmetic and functions. MODE 2 Statistics mode: Used to perform statistics calculations. The STAT indicator appears on top right of the display. MODE Currency conversion mode. 3 Selection of the Display Notation This calculator has the following four display notation systems for the display values. FIXed decimal point system: A value is displayed with the number of decimal places specified. The FIX indicator appears. SCIentific notation system: A value is displayed using scientific notation. The SCI indicator appears. The mantissa of the value is displayed with the number of decimal places specified. ENGineering notation system: A value is displayed using engineering notation. The ENG indicator appears. The mantissa of the value is displayed with the number of decimal places specified and the exponent is set to a multiple of 3 for display. Floating point system: A value is displayed without regard for the number of decimal places specified. None of the FIX, SCI or ENG indicators appears. Scientific notation is used if the x | < 9999999999. values are not in the range 0.000000001 The display notation is changed by pressing 2ndF [FSE] when a calculation result is displayed or after clearing the values in the calculator with ON/C . Each time 2ndF © Lexibook 2005 GB [In] 2ndF To use a logarithmic function just press ln key [ex] In To use an exponential function (ex) press 2ndF and ln key To use memory calculations by storing a number in X memory [x] Exp Exp 2ndF [] To specify an exponent just press this key To use in a calculation press 2ndF and Exp key. As shown above, please note that only the second function is indicated following 2ndF and not the function or number printed on the key itself. For example, notation used to compute "three times Pi" is: 3 2ndF [] X Power On and Off Press ON/C to turn the calculator on, and 2ndF = [OFF] to turn it off. Clearing Methods There are three clearing methods as follows: : Clears all values including functions and calculation instructions in the ON/C calculator (excluding statistical data and memory contents in the normal mode.) 2ndF [CA] : Clears the values in the calculator, excluding independent memory "M" in the normal mode. Clears all statistical data in the statistical mode. : Delete the digit on the right of a number. DEL In the edit mode, it clears the single digit of a numerical value, functions, etc. under the cursor. Calculation Priority Sequence This calculator will compute a formula by using some priorities. In fact it employs true algebraic logic to calculate a formula in the following order: 1. Function preceded by their argument (X², X-1, n!, etc...) 2. Power / Root : yx, x 3. Implied multiplication of a memory value (2Y, etc...) 4. Functions followed by their argument (sin, cos, etc...) 5. Implied multiplication of a function (2sin30 etc...) 6. nCr, nPr 3 [FSE] are pressed, the display mode changes in the sequence: FIXSCIENGFloating point systemFIX... Determination of the Number of Decimal Places When the FIX, SCI or ENG indicator is displayed, the number of decimal places can be set to any value between 0 and 9. After setting the number of decimal places, the display value will be rounded to the corresponding number of digits and displayed. To specify the number of decimal places, first press 2ndF [TAB] when a calculation result is displayed or after clearing the values in the calculator with ON/C . Then press the appropriate number key to specify the number of decimal places. Determination of the Angular Unit In this calculator, the following three angular units can be specified. Degree (°): The DEG indicator appears. Radians (rad):The RAD indicator appears. The GRAD indicator appears. Grads (g): To specify the angular unit, press DRG . Each time DRG is pressed, the angular unit changes in the sequence: DEGRADGRADDEG... Note: For the examples given in subsequent explanations, make sure that none of the following symbols or guidance are displayed unless otherwise specified. FIX, SCI, ENG: see page 12 Check and Correct Equation You can edit the equation not only while you are entering but also after getting your answer. [While entering] > < · Press to move the cursor. · If you need to delete a number, move the cursor to the number you wish to delete then press DEL . The number under the cursor will be deleted. · If you need to insert a number, move the cursor to the place immediately after where you wish to insert the number then enter the number. [After finding the answer] · Press 2ndF [] to go back to the equation to check it right or not. · Edit the equation the same way as while entering. Substitute Arithmetic Function If you have a formula and all you have to do is to substitute the numbers, this function might be handy. It remembers the entered equation as a formula. After finding the first answer, press 2ndF [?] and this function automatically moves the cursor back to the first number of the equation and lets you change the number. After that, you can skip to the next number by pressing 2ndF [?] and so on. At any place, pressing [=] lets you know the answer for the new equation. For example: A² + B² = (1) A= 2.5, B= 3.5 (2) A= 2.5, B= 4.5 © Lexibook 2005 Key Operation 1 2 3 4 2.5 [ x² ] [ + ] 3.5 [ x² ] [ = ] [2ndF] [ ? ] [2ndF][ ? ] [DEL] 4 [ = ] Display 2.5² + 3.5²= 18.5 2.5² + 3.5² 2.5² + 3.5² 2.5² + 4.5²= 26.5 Remark (1) (2) SCIENTIFIC CALCULATIONS If the FIX, SCI, or ENG indicator is displayed, clear the indicator by pressing 2ndF [FSE]. (See page 12) Arithmetic Operations ( page 8) Functions ( page 8) Before performing function calculations be sure to press ON/C . · Before starting calculations, specify the angular unit (See page 18) · Chain calculations(The result of the last calculation is used as the first operand.) Random Number A pseudo-random number with three significant digits can be generated by pressing 2ndF [Random] = .To generate the next random number, press [=]. You can perform this function in the normal and statistics mode. · Random number use memory Y. Each random number is generated on the basis of the value stored in memory Y (pseudo-random number series) Angular Unit Conversions ( page 9) The angular unit can be changed in the following sequence: degreesradiansgradesdegrees... Memory Calculations ( page 8) This calculator has one independent memory (M), one last answer memory, and two temporary memories, (X,Y). Independent memory (M) (M) memory is available in the normal mode. STO [M] : Clear the independent memory and then stores the displayed value in it. RCL [M] or 2ndF [ALPHA] [M] = : Recalls the value in the independent memory. : M+ Adds the displayed value to the value stored in the independent memory. 2ndF [M-] : Subtracts the displayed value from the value stored in the independent memory. · Press 0 STO [M] to clear (i.e. store 0) the value stored in the independent memory. 4 GB Temporary memories (X, Y) X and Y memories are available in the normal mode. STO [X], [Y] : Stores the displayed value in the specified temporary memory (X, Y) RCL [X], [Y] or 2ndF [ALPHA] [X], [Y] = : Recalls the value stored in the memory corresponding to the alphabetic key pressed. Temporary memory contents are cleared when the mode is changed or the value 0 is stored. Last answer memory The last answer memory is available in the normal and statistics mode. The calculation result obtained by pressing = or any other calculation ending instruction is automatically stored in the answer memory. 2ndF [ANS] : Recalls the contents of the last answer memory. Last answer memory is cleared when the mode is changed. 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 numbers....................... Y memory r, xy .............................. X memory, Y memory Fractions Calculations ( page 9) a b/c Key is used to enter a fraction or to convert a fraction to the decimal scale. 2ndF [d/c] : Used to convert a fraction a+b/c d/c. · A decimal number or exponent cannot be entered as a fraction ...