The brain of any computer system is

The brain of a computer system is often referred to as the Central Processing Unit (CPU). The CPU is the main component responsible for executing instructions and performing mathematical operations. It fetches instructions from memory, decodes them, performs the operations specified by the instructions, and stores the results back in memory. The CPU acts as the control center of the computer and manages all the other components of the system, including input/output devices, memory, and storage. The performance of a computer system largely depends on the capabilities of its CPU.