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                          Contents    BASIC DEFINITIONS.......................................................... 2  The Keys .......................................................................................2  GENERAL KEYS ..............................................................................2  MEMORY KEYS ...............................................................................2  SPECIAL KEYS ................................................................................3  UNIT CONVERSION KEY ....
                    
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                          BASIC DEFINITIONS  The Keys  To keep your calculators as compact as possible, some keys have  more than one function. You can change the function of a key by  pressing another key first, or by setting the calculator in a certain  mode.  The following pages give you more detailed explanation of each key’s  use and function.  [ 2ndF ] Second Function Select Key  Some keys have a second function inscribed above them. To perform  this second function, press [ 2ndF ]. “ 2F ” appears in the display 
                    
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                          [ M+ ] Memory Plus Key  Press [ M+ ] to total the current calculation and add the result to the  value already in memory.   X  K X  K    [ 2ndF ] [ Ka ], [ 2ndF ] [ Kb ] Constant (Ka, Kb) Memory  Store Key   Press to enter the displayed value into constant memory Ka or Kb.    X  K X  K    [ Ka ], [ Kb ] Memory Recall Key  Press to display the contents of a constant memory.  Note :    • Constant memories Ka and Kb can have a value of 0   X  K X  K    • If you press [ Ka ] or [ Kb ] after enteri
                    
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                           [ 2ndF ] [ FIX ] [ ‧ ] 0. 555555556  Note : [ 2ndF ] [ FIX ] is inactive immediately after and during  numerical input.  [ SCI ] Scientific Key  Converts the displayed number into a power of ten and back.  (Ex.) :  12.3456 [ x ] 10 [ = ] 123.456  [ SCI ] 1.23456   02  [ SCI ] 123.456  [ SCI ] 1.23456   02  [ DRG ] Angle unit conversion key  Press to change the angle unit as DEG (Degrees), RAD (Radian), or  GRAD (Gradient).  UNIT CONVERSION KEY  This calculator has 13 unit conversion keys as f
                    
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                          –1 –1 –1  [ 2ndF ] [ sin  ], [ 2ndF ] [ cos ], [ 2ndF ] [ tan ] Inverse Sine,  Inverse Cosine, Inverse Tangent Keys  Calculate the inverse trigonometric functions of the displayed value.  [ 2ndF ] [ HYP ] [ sin ], [ 2ndF ] [ HYP ] [ cos ], [ 2ndF ] [ HYP ]  [ tan ] Hyperbolic Keys  Calculate the hyperbolic functions of the displayed value.  –1  [ 2ndF ] [ HYP ] [ 2ndF ] [ sin ], [ 2ndF ] [ HYP ] [ 2ndF ]   –1 –1  [ cos ], [ 2ndF ] [ HYP ] [ 2ndF ] [ tan ] Inverse Hyperbolic Keys  Calculate inv
                    
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                          physics constants. Just pressing [ CONST ] key continuously can  show the following symbols and values.   Symbol Meaning  Value    c Speed of light 299792458 m / s   –2  g Acceleration of gravity 9.80665 m s   –11 2 –2  G Gravitational constant 6.6725985 x 10  N m kg   3 –1  Vm Molar volume of ideal gas 0.0224141 m  mol   23 –1  N  Avagadro’s number 6.022136736 x 10  mol   A  R Molar gas constant 8.3145107 J / K mol  –19  e Elementary charge 1.6021773349 x 10  C  –31    m  Electron mass 9.1093
                    
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                          [ DATA ], [ DEL ] Data Entry and Delete Key  In the STAT mode, enter data by pressing the desired numbers, then  [ DATA ]. If you enter incorrect data and do not notice your mistake  until you press [ DATA ], enter the same incorrect data and then press  [ DEL ] to delete that incorrect data.   [ x ] Arithmetic Mean Key  Calculates the arithmetic mean ( x ) of the data.  [ 2ndF ] [σ] Population Standard Deviation Key  Calculates the population standard deviation of the data.  [ S ] Sample Stan
                    
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                          ( n )  : Appears when you press [SHIFT] [[X]] in the  program learn mode and when program  execution halts to let you enter a variable. The  number in brackets shows the number of the  place of the variable, and goes from 1 - 40.  ORDER OF OPERATIONS  Each calculation is performed in the following order of precedence:  1) Functions required inputting values before pressing the function  –1 –1 –1 2 key, for example, cos, sin, tan, cos , sin , tan , log, ln, x , 1/x,  3 √, π, , x!, %,  ,  and 13
                    
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                           x e   x  ≤ 230.2585092  100 0 ≤ x < 1 x 10  x  2 50 x    x  < 1 x 10   –99 100  1/x  1 x 10 ≤  x  < 1 x 10 , x ≠ 0  100   3  x  < 1 x 10   x x !  0 ≤ x ≤ 69,  x  is an integer.  100  ,    x  < 1 x 10   y 100  x   x > 0 : –1 x 10 < y log x < 100  x = 0 :  y > 0  x < 0 : y=n, 1/(2n+1), n is an integer.  100  but  –1 x 10 < y log  x  < 100   y  1  100  x x > 0 : y ≠ 0, –1 x 10 <  log x < 100   y  x = 0 : y > 0  x <0 : y=2n+1, l/n, n is an integer.(n≠0)  1  100  but  –1 x 10 <  log ⏐x ⏐ 100    y 
                    
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                          • You make a calculation that is out of the range for functional and  statistical calculations.  • You try to store over 40 steps in a program.  To clear calculation after an overflow condition, press [ ON/C ].  POWER SUPPLY  To turn the calculator on, press [ ON/C ] ; To turn the calculator off,  press [ OFF ]. This calculator automatically turns it off when not  operated for approximately 9 minutes. It can be reactivated by  pressing [ ON/C ] key and the display, memory, settings are retaine
                    
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                          (Ex.) : 7 – 5.6 = 1.4     –4.5 – 5.6 = –10.1    DEG   1.4 7 [ – ] 5.6 [ = ]     DEG   –10.1 4.5 [+/–] [ = ]  (Ex.) : 12 x 2.3 = 27.6     12 x (–9) = –108    DEG   27.6 12 [ x ] 2.3 [ = ]     DEG   –108. 9 [+/–] [ = ]  (Ex.) : 74 ÷ 2.5 = 29.6     85.2 ÷ 2.5 = 34.08    DEG   29.6 74 [ ÷ ] 2.5 [ = ]     DEG   34.08 85.2 [ = ]  Memory Calculations  • Do not set the function mode to  “ STAT ” when performing memory  calculation.  • A new number entered into memory by pressing [ X  M ] repalces  any
                    
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                               DEG 2.12345 [ 2ndF ] [ ]    2.072442  Before performing the following calculation, check to see that your  calculator is fixed at 2 decimal disaply format.  Fraction Calculation  d • By pressing [ 2ndF ] [ / ], the displayed value will be converted  e to the improper fraction.  2 3 124   (Ex.) : + 7 = 3 5 15      DEG b b b 2 [ a / ] 3 [ + ] 7 [ a / ] 3 [ a / ] 5 [ = ]   c c c ∪ ┘   8  4 15       DEG d [ 2ndF ] [ / ]  e ┘   124 15 b • When a press of [ a / ] key after the [ = ] key or a fr
                    
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                                DEG –1  7 [ 2ndF ] [ HYP ] [ 2ndF ] [ sin ]    2.64 Common And Natural Logarithms / Exponentiations     (Ex.) : ln7 + log100 = 3.95        DEG 7 [ ln ] [ + ] 100 [ log ] [ = ]    3.95 2 (Ex.) : 10  = 100.00        DEG x 2 [ 2ndF ] [ 10  ] [ = ]    100.00 5 –2 (Ex.) : e  – e  = ?        x DEG 5 [ 2ndF ] [ e  ] [ – ] 2 [ +/– ] [ 2ndF ]   x  148.28 [ e  ] [ = ]  Power, Root, Reciprocals, Factorials    (Ex.) : 2 + 3 × 5 = 5.29      DEG 2 [ √ ] [ + ] 3 [ √ ] [ x ] 5 [ √ ] [ = ]    5.29 3 3  (
                    
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                               DEG 98 [ 2ndF ] [ A  B ] [ 2ndF ] [ in ↔cm ]    38.58 Note : All operating procedures for unit conversion key,        2 2 [ feet ↔ m ], [ feet ↔ m  ], [ B.gal ↔ l ], [ gal ↔ l ]  [ Pint ↔ l ], [ Tr.oz ↔ g ], [ oz ↔ g ], [ lb ↔ kg ],          [ atm ↔ kpa ], [ cal ↔ KJ ], [ ℉ ↔ ℃ ] and             [ mmHg ↔ kpa ] are the same as the above example.  Physics Constants  –10  (Ex.) : 5 x G = 3.34 x 10     CONST DEG  5 [ x ] [ CONST ] [ CONST ] [ CONST ]     6.67   –11 G         DEG  [ = ]     3.
                    
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                          2 () x ∑ 2 x – ∑ n The sample standard deviation S is defined as :   n − 1 2 () ∑ x 2 ∑ x – n The population standard deviationσis defined as :   n x ∑ The arithmetical mean x is defined as :   n • To delete an incorrect entry, press [ DEL ].  PROGRAMMING  With your programmable scientific calculator, complex repeated  calculations are no longer time–consuming chores. All you have to do  is tell the calculator what you want to do in a way it can understand (in  other word, program it).   Your 
                    
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                          displayed. Then press [ 2ndF ] [ HALT ] and continue entering your  formula in the usual way.  When you run the program, press [ RUN ] after the calculator dispalys  an interim value to resume the program. You can use the same  method to program your calculator to run two or more formulas. One  after another.  (Ex.) Find the total amount of principal and interest on a $5,000 loan  (x) at 6% annual interest (y) compounded annually over a  period of 7 years (z) ?  z Formula : total amount = x (1
                    
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                          Description : △ → Y  a b R •R a R b R 1 2 2 5 R 4 R =  4 R + R + R 1 2 3 R R 3 1 R •R 2 3 R R =  6 5 R + R + R 1 2 3 c c   R •R 3 1 R =  6 R + R + R 1 2 3 (Ex) :(1) R  = 12 (Ω) (2) R = 10 (Ω)  1 1    R = 47 (Ω)  R = 20 (Ω)  2 2    R = 82 (Ω)  R = 30 (Ω)  3 3      DEG    X  K     12 [ 2ndF ] [ Ka ]    12.    DEG    X  K     47 [ 2ndF ] [ Kb ]    47.  DEG    M    82 [ X  M ]    82. PGM DEG    M   [ 2ndF ] [ PGM ]     0. PGM DEG    M    X  K X  K    R x R [ Ka ] [ Kb ]  1 2   564. PGM DEG    X  K
                    
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                           DEG    M   R  [ RUN ]  6   5.   -E18-   SR260C_English_black_090402.doc         SIZE: 140x75mm         SCALE 2:1          2009/4/15                                                                                                                                                                                                                                                                                                                                                                              
                    
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                          CONTENIDOS     DEFINICIONES BÁSICAS .......................................................2  El teclado .......................................................................................2  TECLAS GENERALES..........................................................................2  TECLAS DE MEMORIA ...................................................................2  TECLAS ESPECIALES....................................................................3  TECLA DE CONVERSIÓN DE UNIDAD.....