Contents General guide .................................................................... 2 Power supply ................................................................................... 2 The keyboard................................................................................... 2 Display symbols ............................................................................... 3 Display formats ................................................................................ 3 Order of operations .......................................................................... 4 Correction ........................................................................................ 5 Accuracy and Capacity .................................................................... 5 Overflow / Error conditions............................................................... 7 Basic calculation ............................................................... 8 Mixed arithmetic calculation............................................................. 8 Parentheses calculations ................................................................. 8 Constant calculation......................................................................... 8 Percentage calculation..................................................................... 9 Memory calculation .......................................................................... 9 Scientific calculation....................................................... 10 Reciprocal, Factorial ...................................................................... 10 Square, Square / Cubic Root, Power, Root ................................... 10 Logarithms and Antilogarithms ...................................................... 10 Fraction calculation ........................................................................ 10 Angular units conversion................................................................ 11 Trigonometric / Inverse trigonometric functions ............................. 11 Hyperbolic / Inverse hyperbolic functions....................................... 12 Rectangular / Polar coordinates..................................................... 12 Permutations, Combinations.......................................................... 13 Sexagesimal Decimal form conversion ..................................... 13 Base-n mode calculation................................................................ 14 Complex numbers calculation........................................................ 14 Random numbers and Exchange key ............................................ 15 Unit conversion .............................................................................. 15 Statistics calculation....................................................... 15 Computing single variable statistics ............................................... 15 Viewing statistics data.................................................................... 17 Adding a data entry........................................................................ 17 Editing statistics data ..................................................................... 18 Delete error.................................................................................... 18 Weighted data entry method.......................................................... 19 E1 SR-260N_English_090324.rtf SIZE: 135x75mm / SCALE 2:1 / 2009/3/24 General guide Power supply On or Off : To turn the calculator on, press [ON/C]; to turn the calculator off, press [2ndF] [OFF]. Auto power-off function : This calculator automatically turns off it when not operated for approximately 9 minutes. Power can be restored by pressing the [ON/C] key again. Memory contents and the previous mode setting (STAT, DEG, CPLX, Base-n,...) are retained even when power is turned off or auto power-off. Battery replacement : The calculator is powered by two alkaline batteries (G13 or LR44). When the display dims, replace the batteries. Be careful not to be injured when you replace the battery. 1. Unscrew the screws on the back of the calculator. 2. Insert a flat bladed screwdriver into the slot between the upper and lower case then carefully twist it to separate the case. 3. Remove both batteries and dispose of them properly. Never allow children to play with batteries. 4. Wipe off the new batteries with a dry cloth to maintain good contact. 5. Insert the two new batteries with their flat sides (plus terminals) up. 6. Align the upper and lower cases then snap them to close together. 7. Tighten the screws. The keyboard 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. ­1 2nd function sin 1st function sin 1st functions Those are the functions that are normally executed when you press the key. 2nd functions The second function is printed above or to the right of the key. To execute 2nd functions key, please press [ 2ndF ] then the corresponding key. When you press [ 2ndF ], the "2ndF" 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 [ 2ndF ] by mistake, simply press [ 2ndF ] again to remove the "2ndF" indicator. E2 SR-260N_English_090324.rtf SIZE: 135x75mm / SCALE 2:1 / 2009/3/26 (Note) : [ A ], [ B ], [ C ], [ D ], [ E ], [ F ] are 1st functions in HEX mode. Display symbols Indicators shown on the display is to indicate you the current status of the calculator. DEG or RAD or GRAD : angular unit M: Independent memory CPLX : Complex number mode E: Overflow / Error STAT : Statistical mode : minus 2ndF : [2ndF] key pressed ( ) : Parenthesis calculation CP : Precision capability BIN : Binary mode CPK : Process capability OCT : Octal mode : Deviation HEX : Hexadecimal mode USL : Setting upper limit ED : Edit mode LSL : Setting lower limit HYP : Hyperbolic mode Display formats The calculator can display numbers in four formats : floating point, fixed point, scientific, and engineering. Floating point display format The floating point format displays numbers in decimal form, using up to 10 digits. Any trailing zeros are truncated. If the result of a calculation is too large to be represented in 10 digits, the display automatically switches to scientific format. If the result of later calculations is small enough to be displayed in 10 digits, the calculator returns to floating point format. (Ex.) : Set the display in floating display format. Step: Press [ 2ndF ] [ TAB ] [ ] DEG 0. Fixed point display format The fixed point, scientific, and engineering formats use a fixed number of decimal places to display numbers. If more than the selected number of decimal places is keyed, it will be rounded to the correct number of decimal places. (Ex.) : Fix the display at 2 decimal places, then key in 3.256 Step 1: Press [ 2ndF ] [ TAB ] 2 Step 2: key in 3.256 [ = ] DEG 0. 0 0 DEG 3. 2 6 On the contrary, if fewer than the selected number of decimal places is keyed, it will be padded with trailing zero. (Ex.) : Fix the display at 4 decimal places, then key in 4.23 Step 1: Press [ 2ndF ] [ TAB ] 4 DEG 0. 0 0 0 0 E3 SR-260N_English_090324.rtf SIZE: 135x75mm / SCALE 2:1 / 2009/3/24 DEG Step 2: key in 4.23 [ = ] 4. 2 3 0 0 Scientific display format In Scientific display format, the number 891500 can be shown in scientific format as 8.915 x 10 05, where 8.915 is called the mantissa and 5 is as the exponent of 10. (Ex.) : 7132 x 125 is displayed in scientific display format. Step 1: key in 7132 [ x ] 125 [ = ] Step 2: press [ FE ] DEG 8 9 1 5 0 0. DEG 05 8. 9 1 5 (in floating point format) Besides, entry can be made in scientific notation by using the [EXP] key after entering the mantissa. (Ex.) : Key the number 4.82296 x 10 5 Step :key in 4.82296 [ EXP ] 5 (in floating point format) Engineering display format The format is similar to the scientific format, expect the mantissa can have up to three digits left of the decimal, instead of only one, and the exponent is always a multiple of three. It is useful for engineers to convert units based on multiples of 10 3. (Ex.) : Convert 15V into 15000mV (V : Volt) Step 1: key in 15 Step 2: press [ ENG ] twice (Ex.) : Convert 15V into 0. 015KV Step 1: key in 15 Step 2: press [ 2ndF ] [ ] twice DEG DEG 05 4. 8 2 2 9 6 1 5. DEG -03 1 5 0 0 0. (V : Volt) DEG 1 5. DEG 03 0. 0 1 5 Order of operations Each calculation is performed in the following order of precedence : 1) Operation in parenthesis. 2) Functions required pressing the function key before entering, for example, [ DATA ] in STAT mode and [ EXP ] key. 3) Functions required inputing values before pressing the function key, for example, cos, sin, tan, cos-1, sin-1, tan-1, log, ln, x2, 1/x, , , and 6 units , , 3, x!, %, RND, ENG, conversion. 4) Fractions 5) +/­ E4 SR-260N_English_090324.rtf SIZE: 135x75mm / SCALE 2:1 / 2009/3/24 6) 7) x , yx nPr, nCr y 8) x , ÷ 9) +, ­ Correction If you have made a mistake when entering a number (but you have not yet pressed an arithmetic operator key), just press [ CE ] to clear the last entry then input it again, or delete individual digits by using the backspace key [ 00 0 ]. (Ex.) : Correct 12385 as 789 Step: Press [ CE ] 789 (Ex.) : Correct 12385 as 123 1 2 3. In a series of calculations, you can correct errors in immediate results by pressing [ON/C] to clear the calculation completely (expect clearing memory, see page 9). If you press the wrong arithmetic operation key, just press [ CE ] key before entering anything else. Step: Press [ 00 0 ] twice DEG DEG 7 8 9. Accuracy and Capacity Accuracy : ±1 in 10th digit. Capacity : In general, every reasonable calculation is displayed up to 10 digit ± mantissa, or 10-digit mantissa plus 2-digit exponent up to 10 99 or integers between -9999999999 and 9999999999. Numbers used as input must be within the range of the given function. The range for each of the calculator's functions is given in the following pages. Functions Input range 10 sin x, cos x, tan x Deg : | x | < 4.5 x 10 deg Rad : | x | < 2.5 x 10 rad 10 Grad : | x | < 5 x 10 grad however, for tan x Deg : | x | 90 (2n+1) Rad : | x | 8 (2n+1) 2 Grad : | x | 100 (2n+1) (n is an integer) |x| 1 E5 sin ­1 x, cos ­1 x SR-260N_English_090324.rtf SIZE: 135x75mm / SCALE 2:1 / 2009/3/24 tan ­1 x sinh x, cosh x tanh x sinh ­1 x cosh ­1 x tanh ­1 x log x, ln x 10X eX | x | < 1 x 10 | x | < 1 x 10 100 | x | 230.2585092 100 | x | < 5 x 10 99 1 x < 5 x 10 99 |x|<1 1 x 10 ­99 x < 1 x 10 100 ­1 x 10 100 < x < 100 100 ­1 x 10 100 < x 230.2585092 0 x < 1 x 10 | x | < 1 x 10 | x | < 1 x 10 | x | < 1 x 10 50 100 x x 3 2 1/x x ,x 0 100 x! RP PR 0 x 69, x is an integer. x2 + y 2 < 1 x 10 100 0 r < 1 x 10 100 10 Deg : || < 4.5 x 10 deg Rad : || < 2.5 x 10 rad 10 Grad : || < 5 x 10 grad however, for tan x Deg : || 90 (2n­1) 8 (2n­1) 2 Grad : || 100 (2n­1) (n is an integer) | DD |, MM, SS.SS < 1 x 10 100, 0 MM, SS.SS | x | < 1 x 10 100 x y Rad : || 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 x > 0 : y 0, ­1 x 10 x=0:y>0 E6 100 y x < 1 log x <100 y SR-260N_English_090324.rtf SIZE: 135x75mm / SCALE 2:1 / 2009/3/24 x < 0 : y = 2n+1, I/n, n is an integer. (n 0) but ­1 x 10 a bc 100 < 1 y log | x | <100 nPr, nCr STAT InputTotal of integer, numerator and denominator must be within 10 digits (includes division marks) ResultResult displayed as fraction for integer when integer, numerator and denominator are less than 1 x 10 10 0rn, n9999999999, n, r are integers. x1x10 50,x1 x 10 100 0 x21 x 10 100, n, r are integers x n0,Sn1,n0 Range = 1 ~ r, 1 n r, 80 r 20400 DEC BIN 0 x 9999999999 (for zero or positive) ­ 9999999999 x ­ 1 (for negative) 0 x 0111111111 (for zero, positive) 1000000000 x 1111111111 (for negative) 0 x 3777777777 (for zero or positive) 4000000000 x 7777777777 (for negative) 0 x 2540BE3FF( for zero or positive) FDABF41C01 x FFFFFFFFFF (for negative) OCT HEX Overflow / Error conditions A symbol " E " are indicated on the display when any of the following conditions occur and further calculation becomes impossible. Just press [ ON/C ] to release those overflow or error indicator and the subsequent calculation can then be performed. 1) When function calculations are performed with a number exceeding the input range. 2) When a number is divided by 0. 3) When the [ ( ] key is used more than 15 times in a single expression. 4) When a result (whether intermediate or final) or accumulated total in memory exceeds the limit. ( ±9.999999999 x 10 99) 5) When more than six pending operations. E7 SR-260N_English_090324.rtf SIZE: 135x75mm / SCALE 2:1 / 2009/3/24 Basic calculation Before performing the following calculation, c ...