What is the main function of the CPU?

The main function of the CPU (Central Processing Unit) is to process instructions. The CPU is often referred to as the brain of the computer, as it carries out the basic arithmetic, logical, control, and input/output (I/O) operations specified by instructions in computer programs. It performs tasks such as executing commands, performing calculations, and making decisions based on the programmed logic.

Data storage is performed by memory components such as RAM and storage drives, while managing the power supply is the responsibility of the power supply unit and the motherboard. Connecting peripherals is typically handled by the motherboard’s interface and various ports, rather than the CPU itself. Thus, the processing of instructions is distinctly the primary role of the CPU.