User manual CITIZEN CT561

[. . . ] 2) Replace the old batteries and install new ones with polarity in correct directions, then secure the screws in place and press [ ON ] to turn the power on. This calculator automatically turns it off when not operated for approximately 9~15 minutes. It can be reactivated by pressing [ ON ] key and the display, memory, settings are retained. A message appears on the display to confirm whether you want to reset the calculator and clear memory contents. [. . . ] You can continue moving the cursor by [ ] or [ ] to edit it. After execution is complete or during entering, you can press either [ ] [ ] to display previous input steps and edit values or commands for subsequent execution. (Note) :The replay function isn't cleared even when [ CL ] is pressed or power is turned off, so contents can be recalled even after [ CL ] is pressed. However, replay function is cleared when mode or operation is switched. 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 [ CL ] and then re-entered the values and expression from the beginning. To clear running memory, press [ MRC ] twice. The calculator has eight memory variables for repeated use : A, B, C, X, Y, X1, X2, PROG. You can store a real number in variables A, B, C, X, Y, X1, X2 and an expression in PROG. Each calculation is performed in the following order of precedence : 1) 2) Expression inside parentheses. SRP-285 can use up to 22 consecutive levels of parentheses in a single calculation. Closed parentheses occurring immediately before operation of the [ ENTER ] key may be omitted, no matter how many are required. A multiplication sign " x " occurring immediately before an open parenthesis can omitted. (Note) : The calculator can auto-correct abbreviated multiplication in front of all functions, except memory variables, left parenthesis, type B functions. Henceforth, abbreviated type will not be used in this manual. The correct result cannot be derived by entering [ ( ] 2 [ + ] 3 [ ) ] [ EXP ] 2. Be sure to enter [ x ] 1 between the [ ) ] and [ EXP ] in the below example. You can use this key sequence to calculate percentages, add-ons, discounts, and percentages ratios. The calculator enables you to repeat the last operation executed by pressing [ = ] key for further calculation. Even if calculations are concluded with the [ = ] key, the result obtained can E - 10 Be used for further calculation. It is retained even after the power is turned off. [. . . ] The calculators has a built-in unit conversion feature that enables you to convert numbers from metric to English units and vice versa. press [ 2nd ] [ CONV ] to display the menu. There are 7 menus, covering distance, area, temperature, capacity, weight, energy, and pressure. Use the [ ] [ ] to scroll through the list of units until a appropriate units menu is shown, then [ ENTER ]. [. . . ]