Stack machine

A stack machine is a type of computer that works on a completely different way than a regular computer. Instead of using a processor to process instructions, a stack machine uses a series of stacks or "stacks" of data that it can manipulate. This is what makes them unique.

Think of a stack like a set of markers or cups. You can put things onto the stack, take them off the stack, and move the stack around. For example, if you wanted to do a simple addition operation, you can put two numbers onto the stack, and then "add" them together. The stack will then contain the result of the addition. This is how a stack machine works, it is able to process instructions by manipulating the stack of data.