Évaluations - 7, GPA: 4.6
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Facilité d'utilisation
. Battery replacement SR-270II is powered by two alkaline batteries (GP76A). If the display becomes dim and difficult to read, the batteries should be replaced as soon as possible. To replace batteries : 1) Remove the screws and the back cover. 2) Replace the old batteries and install new ones with polarity in correct directions, then secure the screws in place and press [ ON/AC ] to turn the power on. . Auto power-off function This calculator automatically turns it off when not operated for approximately 9~15 minutes. It can be reactivated by pressing [ ON/AC ] key and the display, memory, settings are retained. . Reset operation If the calculator is on but you get unexpected results, press [ ON/AC ] and then [ MODE ] four times to display the below menu. A message appears on the display to confirm whether you want to reset the calculator and clear memory contents after pressing [ 2 ]. ENG RESET RESET : N Y [2] ..>12 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. . 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. Indicator DEG 74 – 8 . 7 66. Indicator Entry line Result line Entry line SR-270II displays an entry of up to 79 digits. Entries begin on the left ; those with more than 11 digits scroll to the left. Press [] or [] to move the cursor through an entry. 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. Indicator Meaning M Independent memory – Result is negative 2nd 2nd set of function keys is active. A Alphabetic Keys ( A ~ F , M , X ~ Y ) are active. STORCL STO : Storing variable mode is active RCL : Recalling variable mode is active SD Statistics mode is active REG Regression mode is active DEGRAD Angle mode : DEGrees, GRADs, or RADs ENG Engineering notation. SCI Scientific notation. FIX Number of decimal places displayed is fixed HYP Hyperbolic-trig function will be calculated BUSY While an operation is executing There are digits to the left or right of the display . There are earlier or later results that can be displayed Before starting calculation . Mode Selection 1 Each time [ MODE ] is pressed, various functions menus and all argument values corresponding to the desired mode is shown on the screen. It includes three calculation modes (COMP, SD, REG), three angle units (DEG, RAD, GRAD), four display notations (FIX, SCI, NORM, ENG) and reset function (RESET). Each time [ MODE ] is pressed, various functions menus and all argument values corresponding to the desired mode is shown on the screen. It includes three calculation modes (COMP, SD, REG), three angle units (DEG, RAD, GRAD), four display notations (FIX, SCI, NORM, ENG) and reset function (RESET). 1. Press [ MODE ] once to display the calculation mode menu. 2. Enter [ 2 ] to let this calculator being operated under standard deviation mode. COMP SD REG SD [2] ..> 1 23 0. . Using “ 2nd ” keys To execute the functions marked in yellow, please press [ 2nd ] and then the corresponding key. When you press [ 2nd ], the “ 2nd ” indicator shown in the display is to tell you that you will be selecting the second function of the next key you press. If you press [ 2nd ] by mistake, simply press [ 2nd ] again to remove the “ 2nd ” indicator. . Cursor Pressing [] or [] key can move the cursor to the left or the right. Hold down any of those keys to move the cursor at high speed. Pressing [ 2nd ] [] or [ 2nd ] [] can scroll the display up or down while there are previous entries hidden the display. You can reuse or edit a previous entry when it is on the entry line. . Making corrections during input To delete a character at the cursor, make the character underlined by using [] or [] to move the cursor, and then press [ DEL ] to delete the character. 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 ...