What role does the CPU play in a computer system?

The CPU, or Central Processing Unit, is often referred to as the brain of the computer. Its primary role is to perform calculations and execute instructions that are essential for running software and managing hardware operations.

When software applications are launched, they send commands to the CPU, which processes these commands as a series of instructions. This includes arithmetic calculations, logic operations, and moving data between different locations in the memory. Such tasks are fundamental for the operation of all applications, from basic calculations to complex programming.

While other components play vital roles in a computer system—like network interface cards handling communications, power supplies regulating electricity, and storage devices saving data—the CPU is specifically tasked with processing and executing the instructions that drive the computer's functionality. Thus, its role in performing calculations and executing instructions is crucial for the overall operation of the computer system.