What role does the CPU play in a computer?

The CPU, or Central Processing Unit, serves as the brain of the computer, where it processes instructions and manages tasks. This core function involves executing commands from programs and performing calculations necessary for tasks such as running applications and processing data. The CPU interprets and carries out instructions from the system's memory, allowing for the operation of any software installed on the computer, from simple applications to complex operating systems.

The role of the CPU is vital for overall system performance, as it directly impacts how efficiently these tasks are managed and how quickly the computer responds to user inputs. Understanding the CPU's function helps to clarify its importance in the structure of a computing system and why it is often considered one of the key components in determining a computer's capabilities.