Appendix Appendix A Resetting the Calculator Appendix B Power Supply Appendix C Error Message Table Appendix D Input Ranges Appendix E 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. uTo reset the calculator 1. Press m to display the main menu. 2. Highlight the MEM icon and press w, or press j. 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. uTo 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 • Power will not switch on if you press o while the back cover is open. • Do not leave the unit without main power supply batteries loaded for long periods. Doing so can cause deletion of data stored in memory. P.11 • If the figures on the display appear too light and hard to see after you turn on power, adjust the contrast.
Appendix 6. Wipe off the surfaces of a new battery with a soft, dry cloth. Load it into the calculator so that its positive (+) side is facing up. 7. Pressing down on the battery with the battery holder, replace the screw that secures the holder in place. 8. Replace the back cover and press o to turn power on. The main batteries provide power to the memory while the back-up battery is removed, so memory data is not lost.
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 Meaning • Execution of calculations that exceed the capacity of the stack for numeric values or stack for commands. Countermeasure • • 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 Function sinx cos x tanx Input Ranges Input ranges (DEG) |x | < 9 × 109° (RAD) |x | < 5 × 107πrad (GRA) |x| < 1 × 1010 grad sin –1x cos –1x |x| < 1 tan–1x |x| < 1 × 10100 logx In x x 10 ex x 1 × 10–99 < x < 1 × 10100 –1 × 10 100 1/ x |x| < 1 × 10100 , x G 0 x! 15 digits " " " " " " " " " " " " " " " " " " Notes However, for tan x: |x | G 90(2n+1):DEG |x | G π/2(2n+1):RAD |x | G 100(2n +1):GRA 0 < x < 1 × 10100 |x| <1 × 1050 x Precision As a rule, pre
Appendix Function Input ranges °’” |a|, b , c < 1 × 10100 0 < b, c ← °’” |x| < 1 × 10100 Sexagesimal display: |x| < 1 × 107 Internal digits Precision 15 digits As a rule, precision is ±1 at the 10th digit.
Appendix Appendix E Specifications Variables: 26 Calculation range: ±1 × 10 –99 to ±9.999999999 × 1099 and 0. Internal operations use 15-digit mantissa. Exponential display range: Norm 1: 10 –2 > |x |, |x| > 1010 Norm 2: 10 –9 > |x|, |x | > 1010 Program capacity: 20,000 bytes (max.) Power supply: Main: Two AAA-size batteries (LR03 (AM4) or R03 (UM-4)) Back-up: One CR2032 lithium battery Power consumption: 0.
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.
fx-7400G PLUS E User’s Guide fx-7400G PLUS User’s Guide CASIO COMPUTER CO., LTD. 6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan E SA0212-A Printed in China fx-7400G PLUS (English) Cover Black RCA500487-1 http://world.casio.
