User manual CITIZEN CX-146

[. . . ] If the calculator is lock and further key operations becomes impossible, please use a pointed object to press the reset hole to release the condition. 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. The display comprises the entry line, the result line, and indicators. [. . . ] To clear all characters, clear all input character by [ ON/AC ] key. 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. 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 re called even after [ ON/AC ] is pressed. 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 re-entered the values and expression from the beginning. 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. Scientific Notation : ( SCI ) Calculation result is displayed using scientific notation, where the mantissa of the value is displayed with the number of decimal places specified. For FIX, SCI notation, the number of decimal places can be set to any value between 0~9. After specifying the number of decimal places, the display value will be rounded to the corresponding number of digits and displayed. When no specification has been made for the number of decimal places or significant digits, Norm 1 and Norm 2 mode can be carried. Even if the number of decimal places is specified, internal calculation for a mantissa is performed up to 15 digits for The calculator, and the display value is stored in 10 digits. To round off those values to the specified number of decimal places, press [ 2nd ] [ RND ]. 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 be used for further calculation. It is retained even after the power is turned off. Once a numeric value or numeric expression is entered and [ = ] is pressed, the result is stored by this function. (Note) : Even if execution of a calculation results in an error, however, Answer memory retains its current value. [. . . ] Multiple data of the same value can be input using [ 2nd ] [ ]. For example, to input the data 15 seven times, press 15 [ 2nd ] [ ] 7 [ DT ]. You can recall them by the key operations shown in the below table. Press [ MODE ] 3 to enter the REG menu and then choose one of the six regression types by pressing the corresponding argument value, as follow : Lin Log Exp 12 3 Lin Log Exp Pwr Inv Quad Always make sure you clear statistical memory by [ 2nd ] [ Scl ] before preforming regression calculation. [. . . ]