User manual CITIZEN SR-270X

[. . . ] 2 RESET OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CONTRAST ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 DISPLAY READOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 BEFORE STARTING CALCULATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] ENG 1 RESET 2 [ 2] RESET : N Y 12 To clear all variables, pending operations, statistical data, answers, all previous entries, and memory, please press [ 2 ]. To abort the reset operation without clearing the calculator, please press [ 1 ]. If the calculator is lock and further key operations becomes impossible, please press [ 0 ] [ ON/AC ] at the same time to release the condition. It will return all settings to default settings. -E2- 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. Display readout The display comprises the entry line, the result line, and indicators. Indikator Indtastningslinje DEG Indikator 66. Resultatlinje 74 - 8 ÷ 7 Entry line SR-270ll / SR-270X displays an entry of up to 79 digits. Entries begin on the left ; those with more than 11 digits scroll to the left. However, whenever you input the 73rd digit of any calculation, the cursor changes from "_" to " " to let you know memory is running low. If you still need to input more, you should divide your calculation into two or more parts. 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. Indicators The following indicators appear on the display to indicate you the current status of the calculator. Memory variable · The calculator has nine memory variables for repeated use : A, B, C, D, E, F, M, X, Y. * [ 2nd ] [ Mcl ] [ = ] clears all variables. -E5- Stack This calculator uses memory areas, called "stacks", to temporarily store values (numeric stack) and commands (command stack) according to their precedence during calculations. 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. 2) Type A functions which are required entering values before pressing the function key, for example, x2, , x !, x ­1. 6) 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, 10X , eX, 3 , (­). 7) Abbreviated multiplication format in front of Type B functions 2 3 , Alog2, etc. 8) nPr, nCr 9) x , ÷ 10) +, ­ · 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 left to right. Anything contained within parentheses receives the highestpriority. · · Accuracy and Capacity Output digits : Up to 10 digits. Calculating digits : Up to 15 digits In general, every reasonable calculation is displayed up to 10 digits mantissa, or 10-digits mantissa plus 2-digits exponent up to 10 ±99. Numbers used as input must be within the range of the given function as follow : -E6- Functions sin x, tan x Input range Deg : 0 Rad : 0 |x| |x| 4. 499999999 x 10 785398163. 3 10 10 Grad : 0 | x | 4. 499999999 x 10 however, for tan x Deg : | x | 90 (2n­1) Rad : | x | Grad : | x | cos x Deg : 0 Rad : 0 Grad : 0 sin ­1 x, cos ­1 x sinh x, cosh x tan ­1 x tanh x, tanh ­1 x sinh ­1 x, cosh ­1 x log x, ln x 10 x ex x (2n­1) 2 100 (2n­1) (n is an integer) 4. 500000008 x 10 785398164. 9 5. 000000009 x 10 10 10 |x| |x| |x| 1 0 0 0 0 0 x |x| |x| |x| |x| |x| 0 230. 2585092 9. 999999999 x 10 99 9. 999999999 x 10 ­1 4. 499999999 x 10 99 99 99 ­9. 999999999 x 10 ­9. 999999999 x 10 0 x < 1 x 10 1 x 10 1 x 10 1 x 10 100 50 100 x x 99. 99999999 230. 2585092 x 2 |x| |x| |x| 0 x x ­1 , x 0 x x! Pol ( x, y ) 3 100 69 , x is an integer. 9. 999999999 x 10 49 9. 999999999 x 10 99 | x |, | y | x2+y2 Rec (r, ) 0 r 9. 999999999 x 10 99 |x| |x| 4. 499999999 x 10 10 785398163. 3 Deg : 0 Rad : 0 Grad : 0 | x | 4. 499999999 x 10 10 however, for tan x Deg : | | 90 (2n­1) -E7- Rad : | | Grad : | | |x| (2n­1) 2 100 (2n­1) (n is an integer) b, c | a |, b, c < 1 x 10 100, 0 1 x 10 100 Sexagesimal Decimal transformation 000 | x | 999999 59 xy 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. [. . . ] 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. The relation among the three angle units is : 180° = rad = 200 grad Angle conversions ( See Example 20. ) : 1. [. . . ]