What Is Turing-Complete?
Turing-complete is a term used to describe any system or language that can simulate the behavior of a Turing machine. A Turing machine is an abstract computing device invented by Alan Turing in 1936, which consists of an infinitely long tape divided into cells and a head that can read and write symbols on the tape. The head moves along the tape one cell at a time, performing operations based on what it reads from each cell. This allows for complex computations to be performed with only simple instructions.
A system or language is said to be Turing-complete if it has enough power to simulate any computation that could be done by a Turing machine. In other words, if you have access to such a system or language, then you should theoretically be able to solve any problem given enough time and resources. Examples of systems and languages considered Turing-complete include C++, Java, Python, JavaScript, Lisp and many others.