X-machine

X-machine is a theoretical model used in the field of computer science, specifically in the study of formal languages and automata theory. It was introduced by computer scientist Egon Börger as a formalization intended to bridge the gap between high-level programming languages and low-level computational models like Turing machines. An X-machine is characterized by its ability to represent state transitions using a set of rules that define how it processes input and changes state based on that input.