What is the main purpose of the CPU in a computer system?

The main purpose of the CPU, or Central Processing Unit, in a computer system is to perform calculations and execute instructions as directed by software programs. The CPU acts as the brain of the computer, processing data and controlling various components throughout the system. It carries out arithmetic operations, logical comparisons, and data manipulation tasks, which are fundamental to running applications and performing tasks efficiently.

While the CPU does interact with other components that handle data storage, user inputs, and outputs, its primary function revolves around executing instructions and performing calculations necessary for all processing needs. This capability is why it is often regarded as the core component for computation in any computer system.