A computer is an electronic device that processes information and performs tasks according to a set of instructions called programs. It can store, retrieve, and manipulate data, making it useful for a wide range of activities, from writing documents to playing games. Computers come in various forms, including laptops, desktops, and tablets, each designed for different uses and portability. Inside a computer, there are key components like the CPU (central processing unit), which acts as the brain, and memory, which temporarily holds data for quick access. With the help of software, users can perform tasks such as browsing the internet, creating spreadsheets, or editing photos, making computers essential tools in our daily lives.