Postfix notation has significant practical applications because it simplifies the parsing and evaluation of expressions for computer algorithms. 1

This is because postfix notation eliminates the need for parentheses to define operator precedence, making it easier for computers to parse and evaluate expressions since the order of operations is strictly left-to-right and operations are performed immediately when encountered. 1

Some practical applications of postfix notation:

• Compiler design. 1 Postfix notation can be used in intermediate code generation. 4
• Evaluation of expressions in calculators. 1 Postfix notation is used in some models of Hewlett-Packard calculators. 2
• Programming languages. 1 Postfix notation is used in some computer languages, like Postscript. 2