User manual CITIZEN SR-260

[. . . ] Contents General guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E - 2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E - 2 The keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E - 2 Display symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] (Ex. ) : Key the number 4. 82296 x 10 5 Step : key in 4. 82296 [ EXP ] 5 (in floating point format) Engineering display format DEG 4. 82296 05 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 (V : Volt) Step 1 : key in 15 Step 2 : press [ 2ndF ] [ ] twice DEG DEG DEG DEG 15. 0. 015 03 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, cos­1, sin­1, tan­1, log, ln, X 2, 1/x, , , , , , , , , , , and 6 units conversion. , X!, %, RND, ENG, 4) Fractions E-4 5) 6) 7) 8) 9) +/­ y X y, X nPr, nCr x, ÷ +, ­ 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 Step : press [ 00 0 ] twice DEG DEG 789. 123. 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. Accuracy and Capacity Accuracy : 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. The range for each of the calculator's functions is given in the following pages. Functions sin x, cos x, tan x Deg X Input range 4. 5 x 10 10 8 1 in 10th digit. deg Rad X 2. 5 x 10 rad 10 grad Grad X 5 x 10 however, for tan x Deg X 90 (2n+1) Rad X (2n+1) 2 Grad X 100 (2n+1) (n is an integer) E-5 sin ­1 x, cos ­1 x tan ­1 x sinh x, cosh x tanh x sinh ­1 x cosh ­1 x tanh ­1 x log x, ln x 10 x ex X x2 1/X 3 X 1 X 1 x 10 100 X 230. 2585092 X 1 x 10 100 X 5 x 10 99 1 X 5 x 10 99 x 1 ­99 X 1 x 10 100 1 x 10 ­1 x 10 100 X 100 ­1 x 10 100 X 230. 2585092 0X X X X 1 x 10 100 1 x 10 1 x 10 1 x 10 50 100, 100 X 0 X X!X2 +Y2 1 x 10 100 0 r 1 x 10 100 Deg 4. 5 x 10 10 deg Rad 2. 5 x 10 8 rad Grad 5 x 10 10 grad however, for tan x Deg 90 (2n+1) Rad (2n+1) 2 Grad 100 (2n+1) (n is an integer) DD , MM, SS. SS 1 x 10 100, 0 MM, SS. SS x X0 X=0 X0 1 x 10 100 , , , , , , Xy ­1 x 10 100 y log X 100 y0 y = n, 1/(2n+1), n is an integer. 100 but -1 x 10 y 1 y log 100 X 1 y 100 log X 100 0) X X X 0 0 y y 0, ­1 x 10 0 X=0 y = 2n+1, I/n, n is an integer. (n 1 100 but ­ 1 x 10 100 y log X E-6 a b/c Input Total of integer, numerator and denominator must be within 10 digits (includes division marks) Result Result displayed as fraction for integer when integer, numerator and denominator are less than 1 x 10 10 0 x r n, n 1x10 9999999999, n, r are integers. 50 nPr, nCr STAT x 1 x 10 100 0 x2 1 x 10 100, n, r are integer _ n0 x n 0S n 1 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) OCT 0 X 3777777777 (for zero or positive) 4000000000 X 7777777777 (for negative) 0 X 2540BE3FF( for zero or positive) FDABF41C01 X FFFFFFFFFF (for negative) 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. 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. Basic calculation Before performing the following calculation, check to see that your calculator is in decimal base and floating point display. E-7 Mixed arithmetic calculation 1+2x3=?1[+]2[x]3[=] 3. 5 [ +/­ ] [ + ] 8 [ ÷ ] 2 [ = ] DEG DEG 7. 0. 5 Parentheses calculations Operation inside parentheses are always executed first. When the first parenthesis is opened, the " ( ) " indicator appears and remains in the display until the last parenthesis is closed. [ ( ] 5 [ ­ ] 2 [ x ] 1. 5 [ ) ] [ x ] 3 [ + ] 0. 8 [ x ] 4 [ +/­ ] [ = ] 2[x][(]7[+]6[x] [(]5[+]4[=] DEG DEG 2. 8 122. (Note) : It is unnecessary to press the [ ) ] key before the [ = ] key. Constant calculation The calculator enables you to repeat the last number entered or the last operation executed by pressing [ = ] key. By pressing [ 2ndF ] [ d/e ], the displayed value will be converted to the improper fraction. [. . . ] 123 [ + ] 456 [ = ] [ 2ndF ] [ XY ] [ 2ndF ] [ XY ] E-14 DEG DEG DEG DEG 0. 231 579. 00 456. 00 579. 00 Unit conversion incm 12 in = ?in 12 [ A B ] [ 2ndF ] B] DEG 30. 48 38. 58 [ incm ] 98 [ 2ndF ] [ A DEG [ 2ndF ] [ incm ] (Note) : The operating procedure for unit conversion key, [ ], [ mmHgKpa ], [ gall ], [ lbkg ], [ OZg ], is similar to the above example. Statistics calculation Computing single variable statistics Select the mode by pressing [ STAT ] key and make sure " STAT " indictor appears on the display. The STAT mode enables you to calculate the following single variable statistics : n x _ x s x2 number of all data sum of all data sum of the squares mean value Sample Standard deviation Population standard deviation CP CPK Precision capability USL ­ LSL 6 x ­ LSL 3 x2 ­ x)2 / n n­1 x2 ­ n x)2 / n Process capability Min(CPU, CPL) where CPU = USL ­ x 3 CPL = (Note) : In STAT mode, all function key are available, except base-n calculation. 1) : Enter the following data to calculate x, x 2, n, x, S, CP, and CPK , where data 1 = 2, data 2~5 = 5, data 6-8 = 9, USL value : 12, LSL value : 2 In STAT mode Enter all data [ 2ndF ] [ STAT ] [ DATA ] 2 [ DATA ] 5 E-15 DEG DEG DEG STAT STAT STAT 0. 00 2. [. . . ]