OOP most often stands for "Objectively Oriented Programming." This is the most fashionable and effective paradigm of compiling modern, flexible and understandable computer programs.
According to the OOP model, the universe is a set of objects, each of which has certain properties and can perform certain actions. Properties of objects are prescribed in the form of attributes - variables that take one or other values. Actions are prescribed in the form of methods - functions that give objects the ability to perform certain computer mini-programs. Another important element of OOP is the "inheritance" of objects, which allows, for example, to assemble from a "person" object a new object - "student" or "programmer".
OOP is in the list: Computers