Appendix Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Resetting the Calculator Power Supply Error Message Table Input Ranges 2-byte Code Table Specifications
Appendix Appendix A Resetting the Calculator Warning! The procedure described here clears all memory contents. Never perform this operation unless you want to totally clear the memory of the calculator. If you need the data currently stored in memory, be sure to write it down somewhere before performing the RESET operation. u To reset the calculator 1. Press m to display the main menu. 2. Highlight the MEM icon and press w, or press i. 3. Use c to move the highlighting down to “Reset” and then press w.
Appendix Resetting the calculator initializes it to the following settings.
Appendix Appendix B Power Supply This unit is powered by two AAA-size (LR03 (AM4) or R03 (UM-4)) batteries. In addition, it uses a single CR2032 lithium battery as a back up power supply for the memory. If the following message appears on the display, immediately stop using the calculator and replace batteries. If you try to continue using the calculator, it will automatically switch power off, in order to protect memory contents. You will not be able to switch power back on until you replace batteries.
Appendix (Should a battery leak, clean out the battery compartment of the unit immediately, taking care to avoid letting the battery fluid come into direct contact with your skin.) Keep batteries out of the reach of small children. If swallowed, consult with a physician immediately. u To replace the main power supply batteries * Never remove the main power supply and the memory back up batteries from the unit at the same time. * Be sure to switch the unit off before replacing batteries.
Appendix u To replace the memory back up battery * Before replacing the memory back up battery, switch on the unit and check to see if the “Low battery!” message appears on the display. If it does, replace the main power supply batteries before replacing the back up power supply battery. * Never remove the main power supply and the memory back up batteries from the unit at the same time. * Be sure to switch the unit off before replacing batteries.
Appendix Appendix C Error Message Table Message Syn ERROR Meaning 1 Calculation formula contains an error. 2 Formula in a program contains an error. Countermeasure 1 Use d or e to display the point where the error was generated and correct it. 2 Use d or e to display the point where the error was generated and then correct the program. Ma ERROR 1 Calculation result exceeds calculation range. 2 Calculation is outside the input range of a function. 3 Illogical operation (division by zero, etc.
Appendix Message Stk ERROR Countermeasure Meaning • Execution of calculations that exceed the capacity of the stack for numeric values or stack for commands. • • Simplify the formulas to keep stacks within 10 levels for the numeric values and 26 levels for the commands. Divide the formula into two or more parts. Mem ERROR 1 Not enough memory to hold function input in the Graph Mode for graph drawing. 2 Not enough memory to hold function input in the TABLE Mode.
Appendix Appendix D Internal digits Accuracy 15 digits As a rule, accuracy is ±1 at the 10th digit.
Appendix Internal digits Accuracy 15 digits As a rule, accuracy is ±1 at the 10th digit. " " y 1 –1 × 10100 < –– logy < 100 x y=0:x>0 1 y < 0 : x = 2n +1, –– n (n G 0, n is an integer) However; 1 log |y| < 100 –1 × 10100 < –– " " a b/c Total of integer, numerator and denominator must be within 10 digits (includes division marks).
Appendix Appendix E 2-byte Command Table Spaces in the following commands are indicated by “]”.
Appendix Appendix F Specifications Model: fx-7400G Calculations / Graph Function Basic calculation functions: Negative numbers; exponents; parenthetical addition, subtraction, multiplication, division (with priority sequence judgement function - true algebraic logic) Built-in scientific functions: Trigonometric/inverse trigonometric functions (angle units: degrees, radians, grads); logarithmic/exponential functions; reciprocals, factorials; square roots; cube roots; powers; roots; squares; negative signin
Appendix Graph Types: Rectangular coordinate: Parametric: Inequality: y = f ( x) (x, y) = ( f (T), g (T)) (y > f (x), y < f (x), y > f (x), y < f ( x)) Graph Function Memory: Graph function storage, editing, selection, drawing Graph Functions: View Window parameter setting; trace; scroll; overwrite; list graph; zoom [box, factor (zoom in, zoom out, original size)]; sketch [plot; line; horizontal/vertical lining]; manual graphing; clear screen; View Window memory; graph function display; simultaneous drawi
Appendix Program capacity: 7 kbytes (max.) General Display system: 13-character × 6-line display; 10-digit mantissa and 9-digit mantissa and 2-digit exponent when using exponential format for calculations: displays sexagesimal, fraction values Text display: Function commands, program commands, alpha characters within remaining memory capacity Error check function: Check for illegal calculations (using values greater than 10100), illegal jumps, etc. Indicates by error message display.
GUIDELINES LAID DOWN BY FCC RULES FOR USE OF THE UNIT IN THE U.S.A. (not applicable to other areas). Program Mode Command List NOTICE This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
