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- <h2>Business RPN Calculator</h2>
-
- <p>This is a standard RPN calculator, with some extra functions
- for business users. Here's some hints:</p>
-
- <ul>
- <li>To find out what a particular button does, hold down the <strong>Alt</strong>
- key and tap the button.</li>
- <li>The blank buttons exist to make it easy for you to create
- macros. Macros are common sequences of button presses
- that you can assign to a single button.</li>
- <li>To return to the main CoolCalc menu, press the home
- button in the upper right hand corner.</li>
- </ul>
-
- <p><strong>What is RPN? How does it work?</strong></p>
-
- <p>RPN (which stands for "Reverse Polish Notation") is
- a system of doing calculations that was patented by
- Hewlett-Packard in the 1970s. As the name suggests, things are
- done a little backwards, but the end result is that complicated
- calculations become much simpler. </p>
-
- <p>RPN is different in a couple of ways. First of all, there is
- no "equals" button. To perform calculations, you
- "Enter" the numbers you wish to use in your
- calculations, then press the buttons for the operations. For
- example, to calculate 3+4, you press 3, then <strong>ENT</strong>,
- then 4, then <strong>+</strong>. </p>
-
- <p>The beauty of RPN comes out when you do complicated
- calculations. For example, to do 3 + (4 x 5), you would press <strong>3,
- </strong>then <strong>ENT, </strong>then <strong>4</strong>, then
- <strong>ENT</strong>, then <strong>5</strong>, then <strong>x</strong>,
- then <strong>+</strong>. Another example: (3+4) x (5+6): <strong>3,
- ENT, 4, +, ENT,5,ENT,6,+,x.</strong> </p>
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