The stack machine processes instructions by pushing an displaying values in the internal stack. A simple example of this is the calculator. The argument passed on the run (instructions) will always be...

Extracted text: The stack machine processes instructions by pushing an displaying values in the internal stack. A simple example of this is the calculator. The argument passed on the run (instructions) will always be a character unit containing a series of commands. Examples - StackCalc ("") – 0 StackCalc ("5 6 +") → 11 StackCalc ("3 DUP +") → 6 StackCalc ("6 5 57 * - /") – 5 StackCalc ("x y +") – Invalid commands: x