A computer is an electronic device that processes data and performs tasks based on instructions called a program. It is an important part of modern life, making progress in fields such as science, medicine, education, and entertainment. Computers come in many sizes, from mainframes and servers with powerful global connections to personal desktops, laptops, and even mobile devices such as smartphones and tablets.

At the heart of the computer is the central processing unit (CPU), which performs calculations and instructions. Computer memory, including random access memory (RAM) and storage drives, holds data and programs as they are used or stored for later use. Input devices such as keyboards and mice allow users to interact with the computer, while output devices such as monitors and printers display or reproduce the results of processing computer work.

Computers run on software, including operating systems, applications, and utilities that manage hardware and provide services to applications. The development of the Internet has greatly expanded the functionality and utility of computers, enabling them to connect and communicate with other systems around the world, sharing resources, and access to vast amounts of information.

In recent years, advances in artificial intelligence and machine learning have pushed the capabilities of computers even further, allowing them to perform complex tasks such as interpreting, recognizing photos, and driving. As technology advances, computers become more powerful, compact and integrated into everyday products, shaping the future in ways previously unimaginable.