What is the primary function of a Central Processing Unit (CPU)?

The primary function of a Central Processing Unit (CPU) is to interpret program instructions. The CPU acts as the brain of the computer, executing instructions from programs by performing arithmetic calculations, logical operations, and controlling the flow of data in and out of different components of the system. This process involves fetching instructions from memory, decoding them to understand what actions are needed, and then executing those actions effectively.

This function is essential because it directly impacts a computer's ability to perform tasks, run applications, and process data. The speed and efficiency with which the CPU interprets and handles instructions significantly influence overall system performance.

In contrast, storing data permanently is handled primarily by storage devices, such as hard drives or SSDs. Managing user input is typically the responsibility of input devices (like keyboards and mice) and the software that processes that input, while offering network connections pertains to networking hardware and software rather than the CPU itself.