CPU stands for Central Processing Unit. The CPU is often referred to as the “brain” of the computer. Its primary function is to execute instructions stored in a computer’s memory (RAM) by fetching, decoding, and executing them. The CPU performs various operations, including arithmetic and logical calculations, managing input and output operations, and coordinating the activities of other hardware components.

In essence, the CPU is responsible for carrying out the instructions of a computer program, making it a crucial component for the overall functioning of a computer system. The speed and efficiency of the CPU impact the computer’s performance, affecting tasks such as running applications, processing data, and executing complex computations.