Scientific Calculator Fx 991ms |WORK| Download
Mike Henderson
The Casio fx-991MS is an affordable scientific calculator with many powerful features. Some of these can greatly reduce the effort to solve problems, while others can be abused in interesting and fun ways. Being able to use these features can also be helpful on tests and exams where scientific calculators are allowed but more powerful graphing calculators are not.
This article assumes that you know the basics of how to use the calculator. If not, please read the user manuals and review how to use the features on the calculator. The official Casio manuals are available in PDF format here:
A major difference between this calculator and older scientific calculators is that this calculator does not evaluate the expression while you input it. After you finish entering the expression, you press the equals key (=) and the calculator evaluates the expression all at once.
The calculator contains a palette of symbols, which can be used to spell out words and phrases in l33tsp34k. The complete (Latin) alphabet cannot be spelled out, but this can make the exercise more fun.
In theory, any information can be stored as numbers. (Modern digital computers are built completely on this fact.) For example, if you want to store text on the calculator, just devise a coding scheme that maps between letters and numbers. Note that with the precision available, each number on this calculator can hold up to about 40.7 bits of information.
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