Scientific Calculator SRP-280/SRP-285 Instruction Manual Manual de Instrucciones Livro de Especificacoes Anweisungshandbuch Manuel d'instructions Istruzioni all'Uso Gebruiksaanwijzing Manual Instrnkcja Obslugi File name: HDBMSR19R73_Cover_ok.doc version : 2010/07/12 SIZE:135x75mm PARTS NO. HDBMSR19R73 (SR19) Printed in China HDBMSR19R73 XXX File name: HDBMSR19R73_Cover_ok.doc version : 2010/07/12 SIZE:135x75mm PARTS NO. HDBMSR19R73 (SR19) Table of Contents 1. General Guide ....................................................... E - 2 1-1 1-2 1-3 1-4 1-5 Power supply ............................................................. Contrast adjustment ................................................ Display readout ......................................................... Key markings ............................................................. Before starting calculations ..................................... Selecting a mode ......................................................... Selecting an item from display menus ........................... Using " 2nd " keys ....................................................... Cursor ........................................................................ Making corrections during input .................................. Replay function ............................................................ Error position display function ...................................... Memory function .......................................................... Order of operations ..................................................... Accuracy and Capacity ................................................ Error conditions .......................................................... E-2 E-2 E-3 E-3 E-4 E-4 E-4 E-4 E-4 E-4 E-5 E-5 E-5 E-6 E-6 E-8 2. Mode 0 - MAIN ....................................................... E - 9 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2 - 10 2 - 11 2 - 12 2 - 13 2 - 14 2 - 15 2 - 16 Arithmetic calculation ............................................... E - 9 Display formats ......................................................... E - 9 Parentheses calculations ........................................ E - 10 Percentage calculation ............................................ E - 10 Continuous calculation function ........................... E - 10 Answer function ....................................................... E - 11 Logarithms and Antilogarithms ............................. E - 11 Fraction calculation ................................................. E - 11 Angle units conversion ........................................... E - 11 Trigonometric / Inverse-Tri. functions ................... E - 12 Hyperbolic / Inverse-Hyp. functions ....................... E - 12 Coordinates transformation ................................... E - 12 Probability ................................................................ E - 13 Other functions ....................................................... E - 13 Unit conversion ....................................................... E - 13 Physics constants .................................................... E - 13 3. Mode 1 - STAT ....................................................... E - 14 4. Mode 2 - Base-n .................................................. E - 15 4-1 4-2 4-3 4-4 Bases conversions .................................................. E - 15 Negative expressions .............................................. E - 16 Basic arithmetic operations for bases .................... E - 16 Logical operations ................................................... E - 16 5. Mode 3 - CPLX .................................................... E - 16 6. Mode 4 - VLE ....................................................... E - 16 7. Mode 5 - QE ......................................................... E - 16 E-1 1 1-1 General Guide Power supply Turning on or off To turn the calculator on, press [ ON ] ; To turn the calculator off, press [ 2nd ] [ OFF ]. Battery replacement SRP-280 is powered by two alkaline batteries (GP76A). SRP-285 is dual power system which is powered by one alkaline battery (GP76A) and a solar cell. If the display becomes dim and difficult to read (especially when lighting is dim for SRP-285), the batteries should be replaced as soon as possible. To replace batteries : 1) Remove the screws and the back cover. 2) Replace the old batteries and install new ones with polarity in correct directions, then secure the screws in place and press [ ON ] to turn the power on. Auto power-off function This calculator automatically turns it off when not operated for approximately 9~15 minutes. It can be reactivated by pressing [ ON ] key and the display, memory, settings are retained. Reset operation If the calculator is on but you get unexpected results, press [ 2nd ] [ RESET ] in sequence. A message appears on the display to confirm whether you want to reset the calculator and clear memory contents. RESET : N Y Move the cursor to " Y " by [ ], then press [ ENTER ] to clear all variables, programs, pending operations, statistical data, answers, all previous entries, and memory; To abort the reset operation without clearing the calculator, please choose " N " . If the calculator is lock and further key operations becomes impossible, please press [ 0 ] [ DMS ] at the same time to release the condition. It will return all settings to default settings. 1-2 Contrast adjustment Pressing the [ ] or [ ] following [ MODE ] key can make the contrast of the screen lighter or darker. Holding either key down will make the display become respectively lighter or darker. E-2 1-3 Display readout Indicator Entry line MAIN The display comprises the entry line, the result line, and indicators. 74 ­ 8 ÷ 7 66. Indicator Result line Entry line SRP-280 displays an entry of up to 76 digits. SRP-285 displays an entry of up to 80 digits. Entries begin on the left ; those with more than 11 digits scroll to the left. Press [ ] or [ ] to move the cursor through an entry. Press [ 2nd ] [ ] or [ 2nd ] [ ] to move the cursor immediately to the beginning or end of the entry. Result line It displays a result of up to 10 digits, as well as a decimal, a negative sign, a " x10 " indicator, and a 2-digits positive or negative exponent. Results that exceed the digit limit are displayed in scientific notation. Indicators The following indicators appear on the display to indicate you the current status of the calculator. Indicator Meaning M Independent memory ­ Result is negative, or the entry line is full 2nd 2nd set of function keys is active. MODE Mode selection is active MAIN Main mode is active STAT Statistics mode is active Base-n Base-n mode is active VLE Variable linear equation mode is active QE Quadratic equation mode is active CPLX Complex number mode is active DEGRAD Angle mode : DEGrees, GRADs, or RADs ENGSCI ENGineering or SCIentific notation. TAB Number of decimal places displayed is fixed HYP Hyperbolic-trig function will be calculated BUSY While an operation is executing There are digits to the left or right of the display There are earlier or later results that can be displayed 1 - 4 Key markings Many of the calculator's keys are used to perform more than one function. The functions marked on the keyboard are printed differently to help you find the one you need quickly and easily. Keyboard marking White Yellow Green Meaning Direct input Press [ 2nd ] and then key Press key in Base-n mode E-3 1-5 Before starting calculation Changing a mode Pressing [ MODE ] can enter mode menus. You can choose one of six operating modes, including " 0)MAIN ", " 1)STAT ", " 2)Base-n ", " 3)CPLX ", " 4)VLE ", " 5)QE ". Give " 2)Base-n " as an example : Method 1 : Scroll through the menus using [ ] or [ ] until " 2)Base-n " is shown, then enter the desired mode by pressing [ ENTER ]. Key in directly the number of the mode, [ 2 ] , to enter the mode immediately. Method 2 : Selecting an item from display menus Many functions and settings are available on menus. A menu is a list of options displayed across the entry line. Give " Pressing [ DRG ] key displays the menu for choosing the angle setting under MAIN mode " as an example : Method : Press [ DRG ] to display the menu, and then move the cursor [ ] or [ ] to an item you want. Press [ ENTER ] while the item is underlined. For menu items followed by an argument value, enter the argument value while the item is underlined. The item and the argument value are displayed in the previous screen. Using " 2nd " keys When you press [ 2nd ], the " 2nd " indicator shown in the display is to tell you that you will be selecting the second function of the next key you press. If you press [ 2nd ] by mistake, simply press [ 2nd ] again to remove the " 2nd " indicator. Cursor Pressing [ ] or [ ] key can move the cursor to the left or the right. Hold down any of those keys to move the cursor at high speed. Pressing [ ] or [ ] can scroll the display up or down while there are previous entries hidden the display. You can reuse or edit a previous entry when it is on the entry line. Making corrections during input To delete a character at the cursor, make the character underlined by using [ ] or [ ] to move the cursor, and then press [ DEL ] to delete the character. Besides, holding down [ DEL ] can deletes all characters to the right ; then, E-4 deletes 1 character to the left of the cursor each time you press [ DEL ]. To replace a character, make the character underlined by using [ ] or [ ] to move the cursor, and then enter a new entry to replace the character. To insert a character, move the cursor to the position of the character where you want to insert, it will be inserted in the front of the character after pressing [ 2nd ] [ INS ] and entering a new character. (Note) : The blinking cursor " " means the calculator is in insert mode On the contrary, the blinking cursor is displayed as "_" and it means the calculator is in overwrite mode. To clear all characters, clear all input character by [ CL ] key. Replay function · This function stores the latest operation executed. After execution is complete, pressing [ ] or [ ] key will display the operation from the beginning or the end. You can continue moving the cursor by [ ] or [ ] to edit it. To delete a digit, press [ DEL ]. ( or, in overwrite mode, just type over the digit). See Example 1. · The replay function can keep input digits up to 228 characters for SRP-280 or 320 characters for SRP-285. After execution is complete or during entering, you can press either [ ] [ ] to display previous input steps and edit values or commands for subsequent execution. See Example 2. (Note) :The replay function isn't cleared even when [ CL ] is pressed or power is turned off, so contents can be recalled even after [ CL ] is pressed. However, replay function is cleared when mode or operation is switched. Error position display function · When a mathematically illegal calculation is performed, error position display function will tell you with the cursor where the error is. Press [ ] or [ ] to move the cursor and then give it a correct entry. You can also clear an error by pressing [ CL ] and then re-entered the values and expression from the beginning. See Example 3. Memory calculation · Press [ M+ ] to add a result to running memory. Press [ M­ ] to subtract the value from running memory. To recall the value in running memory, press [ MRC ]. To clear running memory, press [ MRC ] twice. See Example 4. · The calculator has eight memory variables for repeated use : A, B, C, X, Y, X1, X2, PROG. You can store a real number in variables A, B, C, X, Y, X1, X2 and an expression in PROG. See Example 5. * [ P/V RCL ] recalls all variables. E-5 * * * * [ SAVE ] lets you store values to variables. [ 2nd ] [ RECALL ] recalls the value of variable. [ 2nd ] [ CL-VAR ] clears all variables except PROG. [ 2nd ] [ CL-PROG ] clears the contents of PROG. Order of operations Each calculation is performed in the following order of precedence : 1) 2) Expression inside parentheses. Coordinates transformation, and Type B functions which are required pressing the function key before entering, for example, sin, cos, tan, sin ­1, cos ­1, tan ­1, sinh, cosh, tanh, sinh ­1, cosh ­1, tanh ­1, log, ln, 10 X , e X, ¡Ô , NEG, NOT, X '( ), Y '( ). Type A functions which are required entering values before pressing the function key, for example, X 2, ¥¡ ° ¡§ , !, X ­1, %, r, g. Exponentiation ( ^ ), X¡Ô Fractions Abbreviated multiplication format in front of variables, £k , RAND. (­) Abbreviated multiplication format in front of Type B functions 2¡Ô 3, Alog2, etc. nPr, nCr x,÷ +, ­ AND, NAND OR, XOR, XNOR Conversion (A b/c d/e, F D, DMS) · When functions with the same priority are used in series, execution is performed from right to left. e X ln120¡÷ e X { ln (120 ) } otherwise, execution is from lef ...