This document discusses computer science and its importance in modern society. It defines computer science as the study of methods, processes, and techniques for storing, processing, and transmitting digital data and information. It notes that computer science has developed rapidly since the mid-20th century with technologies like integrated circuits, the internet, and mobile phones. It describes how computer systems are used to support decision making in administration and business and how they have become essential tools that regulate and direct the functioning of the global society across many fields.