Britannica
Sources used in this answer
What are the main parts of a personal computer?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
personal computer
Programmers may use computer science to design portable computers such as laptops.
A typical personal computer is composed of several core functional elements that work together to process data and execute programs. These main parts include:12
- Central Processing Unit (CPU): Often called the physical heart of the computer, the CPU contains the circuitry for control, logic, and arithmetic operations. It is typically housed on a microprocessor chip.32
- Memory: Computers utilize two primary types of memory. Main memory, such as random-access memory (RAM), provides the CPU with rapid, direct access to data currently in use. Auxiliary memory, such as hard disks or optical discs, provides long-term storage for data and programs.42
- Motherboard: Serving as the backbone of the system, the motherboard is a printed circuit board that connects all internal components, including the CPU, memory, and expansion cards. It also contains the BIOS, which manages the initialization of hardware and the booting process.5
- Peripheral Devices: These input/output devices allow users to interact with the computer and include components such as a keyboard, mouse, display monitor, and printer.162