User manual CITIZEN SR-275

[. . . ] SR270ll / SR-275 Scientific Calculator GENERAL GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 TURNING ON OR OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 BATTERY REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 AUTO POWER-OFF FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] To replace a character, make the character underlined by using [ ] or [ ] to move the cursor, and then enter a new entry to replace the character. To insert a character, move the cursor to the position of the character where you want to insert, it will be inserted in the front of the character after pressing [ 2nd ] [ INS ] and entering a new character. (Note) : The blinking cursor " " means the calculator is in insert mode On the contrary, the blinking cursor is displayed as "_" and it means the calculator is in overwrite mode. To clear all characters, clear all input character by [ ON/AC ] key. -E4- Replay function · This function stores the latest operation executed. After execution is completed, pressing [ 2nd ] [ ] or [ 2nd ] [ ] key will display the operation from the beginning or the end. You can continue moving the cursor by [ ] or [ ] to edit it. ( or, in overwrite mode, just type over the digit). · The replay function can keep input digits up to 256 characters for SR-270ll / SR-275. After execution is completed or during entering, you can press either [2nd ] [ ] or [ 2nd ] [ ] to display previous input steps and edit values or commands for subsequent execution. (Note) : The replay function isn't cleared even when [ ON/AC ] is pressed or power is turned off, so contents can be recalled even after [ ON/AC ] is pressed. Error position display function · When a mathematically illegal calculation is performed, error position display function will tell you with the cursor where the error is. Press [ ] or [ ] to move the cursor and then give it a correct entry. You can also clear an error by pressing [ ON/AC ] and then reentered the values and expression from the beginning. See Example 3. Memory calculation Independent memory · Press [ M+ ] to add a result to running memory. Press [ 2nd ] [ M­] to subtract the value from running memory. To recall the value in running memory, press [ 2nd ] [ RCL ] [ . M. To clear running memory, press [ 0 ] [STO] [ . M. (Note) : Besides pressing [ STO ] key to store a value, you can also assign values to memory variable M by [ M+ ] or [M­]. Memory variable · The calculator has nine memory variables for repeated use : A, B, C, D, E, F, M, X, Y. You can store a real number in any of the nine memory variables. clears the content to a specified memory variable. * [ 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. The numeric stack has 10 levels and command stack has 24 levels. [. . . ] functions · SR-270ll / SR-275 uses [ 2nd ] [ HYP ] to calculate the hyperbolic functions and inverse- hyperbolic functions - sinh, cosh, tanh, sinh­1, cosh­1 and tanh­1. (Note) : When using those keys, make sure the calculator is set for the angle unit you want. Sexagesimal Decimal transformation Sexagesimal notation is as follow 12 59 45. 6 Represent 12 Degree, 59 Minutes, 45. 6 Seconds · The calculator can preform the conversion between decimal and sexagesimal numbers by [ ] and [ 2nd ] [ ]. See Example 23. -E11- Coordinates transformation Y Rectangular Coordinates Polar Coordinates Y P(x, y) x+ y i = r (cos + sin) y 0 x 0 r X P(r, ) 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. [. . . ]