This calculator uses postfix notation,
and works a little differently from calculators you may
have used. Suppose you want to add two numbers. Enter
the first number. Press "Enter." This commits the first
number into the calculator's memory. Then enter the
second number. After that, enter the type of operation
(such as "+") that you wish to perform.
Use only the period (.) as a valid decimal separator.
This is a demonstration RPN (Reverse Polish Notation) calculator
implemented in JavaScript. You must have a JavaScript-capable browser
for this to work. Note that keyboard entry is disabled in this demo.
The Four Function RPN Calculator
is a Javascript Program -- adapted from a sample calculator Javascript
app from Dave Steele. You can see the JavaScript by using View Source.
