Computer Science is the study of computers and computational systems—how they work, how data is processed, and how problems can be solved using algorithms and software. It covers both theory and practical applications, including: Programming (writing code in languages like Python, Java, C++) Algorithms and data structures (efficient ways to solve problems) Software development (designing and building applications) Computer systems (operating systems, networks, databases) Artificial intelligence and machine learning Cybersecurity Web and mobile technologies Computer science is used in almost every field today, such as education, healthcare, finance, entertainment, science, and engineering. Its goal is to create efficient, reliable, and intelligent solutions to real-world problems using computing technology.