# Here is how you can use RPN or Reverse Polish Notation on your calculator

Most frequently calculators are indeed designed to identify simple operations the same way they are actually written. However, RPN or Reverse Polish Notation is a faster system of inputting information and equations. It will also help when performing complicated operations with your calculator.

Anyone who is able to utilise a calculator will be able learn to utilise Reverse Polish Notation calculators. Learning the simple concepts will be done within thirty minutes, however mastering it can only come after practicing. Hewlett Packard has in the past manufactured Reverse Polish Notation calculators, and one of the most popular ones is the HP 48G. There are Reverse Polish Notation calculators available on the Internet as well.

It is also advisable to keep in mind that the most common way of inputting data into a regular calculator is usually in the same order as it is spoken or written, while an RPN calculator does not do it in this same order. For instance, to perform the operation 9+6, on an RPN-based calculator we will press 9, then ENTER, then 6, then +. While with a regular calculator we would press 9, then +, then 6, then ENTER or equal sign.