Casio fx-7400G Programing Manual

Also see for fx-7400G: Manual Manual Function guide Manual Appendix

Barry KissaneDeleting programsPrograms remain in your calculator until you delete them. They are not affected byturning the calculator off. To permanently delete a program, go to the program listwith , and press the continuation key. Use and to select the program namefrom the list, and then press ( ). To delete all the programs in a calculator, choose. ( ) instead of ( ).In case you have pressed any keys by mistake, you then have a second chance toconfirm that you do actually want to erase the program. Press ( ) if you do andany other key or ( ) if you don't.Programs can also be deleted from the Memory mode, accessed by . In Memorymode, you have a choice of finding out how much calculator memory is being used forvarious things (Memory Usage) or of resetting the calculator (Reset).There is also a ( ) key on the memory usage screen, which you can use to deleteall the programs at once, if you wish.Resetting the calculator manually (with the emergency reset on the back of thecalculator) will also delete all the programs. See Appendix A of the User's Guide fordetails and warnings about this.If you press the Reset key in error (either in Memory mode or using the reset on theback of the calculator), you still have one last chance to avoid deleting everything: Press( ) instead of ( ).And, finally …Using programs like those in this book will allow you to do many powerful things withyour calculator.However, the most powerful use of programming comes when you start to writeprograms for yourself. The programs in this book are all fairly short, partly to make iteasier for you to see how they work. Once you have a good idea of how theseprograms work, you may like to experiment with writing other programs for yourself.Some aspects of mathematics are fairly routine, and so lend themselves toprogramming. An example of this is the quadratic formula, used in program QuadEqtn.Other examples are the formulae used in the Calendar and Heron programs. There aremany other formulas in mathematics for which programs can easily be written. Theseinclude working out simple interest, compound interest, the area of a circle and thecosine law.Another aspect of mathematics for which programming is useful involves the use ofrepetition. You might like to try writing programs to deal with sequences and series,which are of this kind.Many of the programs in this book make use of the random number generator tosimulate probabilities. You might like to try writing other programs that use thiscalculator feature.