Computers are electronic devices that process data and perform a variety of tasks according to a set of instructions called programs. They have become an essential part of modern life, used in homes, schools, and businesses for everything from word processing to complex calculations. The evolution of computers has led to the development of various types, including desktops, laptops, and tablets, each designed to meet different user needs. The core components of a computer include the CPU (central processing unit), RAM (random access memory), and storage devices like hard drives or SSDs (solid-state drives). With the advent of the internet, computers have also become gateways to vast amounts of information and communication, connecting people around the world in ways previously unimaginable.