A computer is made up of hardware and software. Hardware refers to the physical parts of a computer that you can touch, while software is made up of programs and operating systems that tell the hardware what to do.
Important hardware includes the CPU, often called the brain of the computer, RAM which temporarily stores information while programs are running, storage devices like SSDs and hard drives that keep files even when the computer is turned off, and input and output devices such as keyboards, mice, speakers, and monitors.
Software includes operating systems such as Windows, macOS, Linux, Android, and iOS. Applications such as web browsers, games, and word processors allow users to complete specific tasks.