What are the main components of a computer's hardware?

1. A computer's hardware is the physical part of the computer, including the case and internal components such as the motherboard and hard drive, as well as external components like the keyboard, mouse, monitor, and printer.
2. The CPU, or Central Processing Unit, is the most important component inside the case.
3. Peripherals are computer components that allow the computer to communicate with the outside world, such as the keyboard, mouse, monitor, printer, scanner, and speakers.