Operation Manual

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SR17D-D1-E.doc SIZE:140x75mm SCALE 2:1 2003/9/15

-E1-

GENERAL GUIDE ............................................................................ 2

ᄼ TURNING ON OR OFF ........................................................................ 2

ᄼ B

ATTERY REPLACEMENT .................................................................. 2

ᄼ A

UTO POWER-OFF FUNCTION ........................................................... 2

ᄼ RESET OPERATION........................................................................... 2

ᄼ C

ONTRAST ADJUSTMENT .................................................................. 3

ᄼ D

ISPLAY READOUT ........................................................................... 3

BEFORE STARTING CALCULATION ............................................. 4

ᄼ M

ODE SELECTION............................................................................ 4

ᄼ U

SING “2ND" KEYS........................................................................... 4

ᄼ C

URSOR ......................................................................................... 4

ᄼ MAKING CORRECTIONS DURING INPUT ............................................... 4

ᄼ REPLAY FUNCTION ........................................................................... 5

ᄼ ERROR POSITION DISPLAY FUNCTION ................................................. 5

ᄼ MEMORY CALCULATION .................................................................... 5

ᄼ STACK ............................................................................................ 6

ᄼ ORDER OF OPERATIONS ................................................................... 6

ᄼ ACCURACY AND CAPACITY ............................................................... 6

ᄼ E

RROR CONDITIONS......................................................................... 8

BASIC CALCULATION .................................................................... 8

ᄼ A

RITHMETIC CALCULATION................................................................ 9

ᄼ PARENTHESES CALCULATIONS .......................................................... 9

ᄼ PERCENTAGE CALCULATION ............................................................. 9

ᄼ DISPLAY FORMATS........................................................................... 9

ᄼ CONTINUOUS CALCULATION FUNCTION ............................................ 10

ᄼ ANSWER FUNCTION........................................................................ 10

SCIENTIFIC CALCULATION.......................................................... 10

ᄼ LOGARITHMS AND ANTILOGARITHMS................................................ 10

ᄼ FRACTION CALCULATION ................................................................ 10

ᄼ ANGLE UNITS CONVERSION ............................................................. 11

ᄼ TRIGONOMETRIC / INVERSE-TRI. FUNCTIONS ................................... 11

ᄼ HYPERBOLIC / INVERSE-HYP. FUNCTIONS ........................................ 11

ᄼ SEXAGESIMAL DECIMAL TRANSFORMATION ..................................... 11

ᄼ COORDINATES TRANSFORMATION ................................................... 12

ᄼ PROBABILITY ................................................................................. 12

ᄼ OTHER FUNCTIONS ( X

–1

, ,

, X

) ........................ 12

STANDARD DEVIATION CALCULATION ..................................... 12

REGRESSION CALCULATION...................................................... 13

SR270ll / SR-275

Scientific Calculator

Summary of content (14 pages)

PAGE 1
SR270ll / SR-275 Scientific Calculator GENERAL GUIDE ............................................................................ 2 ᄼ TURNING ON OR OFF ........................................................................ 2 ᄼ BATTERY REPLACEMENT .................................................................. 2 ᄼ AUTO POWER-OFF FUNCTION ........................................................... 2 ᄼ RESET OPERATION ...........................................................................
PAGE 2
General Guide Turning on or off To turn the calculator on, press [ ON/AC ] ; To turn the calculator off, press [ OFF ]. Battery replacement SR-270ll is powered by two alkaline batteries (GP76A). If the display becomes dim and difficult to read, the batteries should be replaced as soon as possible. To replace batteries : 1) Remove the screws and the back cover.
PAGE 3
Contrast adjustment Pressing the [Ÿ] or [ź] 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. Display readout The display comprises the entry line, the result line, and indicators. Indikator Indtastningslinje DEG 74 − 8 ÷ 7 Ç 66. Indikator Resultatlinje Entry line SR-270ll / SR-275 displays an entry of up to 79 digits.
PAGE 4
Before starting calculation Mode Selection Each time [ MODE ] is pressed, various functions menus and all argument values corresponding to the desired mode is shown on the screen. It includes three calculation modes (COMP, SD, REG), three angle units (DEG, RAD, GRAD), four display notations (FIX, SCI, NORM, ENG) and reset function (RESET). Entering an argument value can set up this calculator to operate as you want it to. Give “SD“ as an example : 1.
PAGE 5
Replay function • This function stores the latest operation executed. After execution is completed, pressing [ 2nd ] [Ÿ] or [ 2nd ] [ź] key will display the operation from the beginning or the end. You can continue moving the cursor by [Ź] or [Ż] 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 256 characters for SR-270ll / SR-275.
PAGE 6
Stack This calculator uses memory areas, called “stacks”, to temporarily store values (numeric stack) and commands (command stack) according to their precedence during calculations. The numeric stack has 10 levels and command stack has 24 levels. A stack error (Stk ERROR) occurs whenever you try to perform a calculation that is so complex that the capacity of a stack is exceeded. Order of operations Each calculation is performed in the following order of precedence : 1) Coordinates transformation.
PAGE 7
Functions sin x, tan x Input range Deg : 0싪 | x | 싪 4.499999999 x 10 10 Rad : 0싪 | x | 싪 785398163.3 Grad : 0싪 | x | 싪 4.499999999 x 10 however, for tan x Deg : | x | 실 90 (2n–1) Rad : | x | 실 10 π (2n–1) 2 Grad : | x | 실 100 (2n–1) (n is an integer) cos x Deg : 0싪 | x | 싪 4.500000008 x 10 10 Rad : 0싪 | x | 싪 785398164.9 Grad : 0싪 | x | 싪 5.000000009 x 10 10 sin –1 x, cos –1 x 0싪 | x | 싪 1 sinh x, cosh x 0싪 | x | 싪 230.2585092 tan –1 x 0싪 | x | 싪 9.
PAGE 8
Rad : | θ | 실 π (2n–1) 2 Grad : | θ | 실 100 (2n–1) (n is an integer) | a |, b, c < 1 x 10 100, 0 싪 b, c | x | =!1 x 10 100 Sexagesimal ↔ Decimal transformation 0 0 0 싪 | x | 싪 999999 59 x > 0 : –1 x 10 100 < y log x < 100 x=0:y>0 x < 0 : y = n, 1/(2n+1), n is an integer. 100 < y log | x | =100 but –1 x 10 xy x y y > 0 : x 실 0, –1 x 10 100 < 1 log y =100 x y=0: x>0 y < 0 : x = 2n+1, I/n, n is an integer. (n 실 0)! 1 100 but –1 x 10 < log | y | =100 x nPr, nCr 0싪 n 싪 99, r 싪 n, n, r are integers.
PAGE 9
Arithmetic calculation • For negative values, press [ (–) ] before entering the value; You can enter a number in mantissa and exponent form by [ EXP ] key. See Example 6. • Arithmetic operations are performed by pressing the keys in the same sequence as in the expression. See Example 7. Parentheses calculations • Operation inside parentheses are always executed first. SR-270ll / SR-275 can use up to 15 levels of consecutive parentheses in a single calculation. See Example 8.
PAGE 10
] will cause the exponent display • Pressing [ ENG ] or [ 2nd ] [ for the number being displayed to change in multiples of 3. See Example 11. • Even if the number of decimal places is specified, internal calculation for a mantissa is performed up to 15 digits for SR-270ll / SR275, and the display value is stored in 10 digits. To round off those values to the specified number of decimal places, press [ 2nd ] [ RND ]. See Example 12.
PAGE 11
• By pressing [ 2nd ] [d/c], the displayed value will be converted to the improper fraction and vice versa. To convert between a decimal and fractional result, press [a b/c] .See Example 18. • Calculations containing both fractions and decimals are calculated in decimal format. See Example 19. Angle units conversion The angle units (DEG, RAD, GRAD) is set by pressing [ MODE ] to display the angle menu.
PAGE 12
Coordinates transformation Y Rectangular Coordinates Polar Coordinates Y P(r, θ ) P(x, y) x+ y i = r (cosθ + sinθ) y 0 r θ x 0 X X • The calculator can perform the conversion between rectangular coordinates and polar coordinates by [ ALPHA ] [ Pol ( ] and [ ALPHA ] [ Rec ( ]. Calculation results are automatically stored in memory variables E and F. See Example 24. (Note) : When using those key, make sure the calculator is set for the angle unit you want.
PAGE 13
• The values of the statistical variables depend on the data you input. You can recall them by the key operations shown in the below table. See Example 27. Σx2 [ RCL ] + [ .A. ] x [ 2nd ] + [ x ] Σx [ RCL ] + [ .B. ] Xın [ 2nd ] + [ Xın ] n [ RCL ] + [ .C. ] Xın–1 [ 2nd ] + [ Xın–1 ] Regression Calculation ſ Use the REG mode for regression calculations.
PAGE 14
Σ xy [ RCL ] + [ .F. ] A [ 2nd ] + [ A ] Σx3 [ RCL ] + [ .M. ] B [ 2nd ] + [ B ] Σ x 2y [ RCL ] + [ .X. ] C [ 2nd ] + [ C ] [ RCL ] + [ .Y. ] r [ 2nd ] + [ r ] [ 2nd ] + [ x ] x Σx x 4 ∧ ∧ y ∧ [ 2nd ] + [ x ] ∧ [ 2nd ] + [ y ] (Note) : Variable Σx 4 , Σx 2y are only available in Quadratic regression. -E14- SR17D-D1-E.