Which of the following components is commonly called the 'brain' of a computer…

Concept

A computer system follows instructions by receiving input, processing data, storing information, and producing output.

The central processor performs the processing stage: its control unit coordinates instruction execution, and its arithmetic logic unit carries out arithmetic and logical operations.

Application

Here, CPU stands for Central Processing Unit. It interprets and executes program instructions and coordinates the work of memory and input/output devices, which is why it is commonly compared with a brain.

Contrast

• A monitor presents visual output; it does not execute the system’s instructions.

• A keyboard supplies text and command input.

• A mouse supplies pointing and selection input.

Cross-check

Classifying the choices by role gives one processor (CPU), one output device (monitor), and two input devices (keyboard and mouse). Only the processor performs the central instruction-processing role.

Result

Therefore, the CPU is the component commonly called the brain of the computer system.