Which component is the 'brain' of the computer that executes instructions?

Which component is the 'brain' of the computer that executes instructions?

• A. RAM
• B. Central Processing Unit (CPU)
• C. Power Supply
• D. Operating System

Answer: (B)

The CPU is the component that directly executes instructions, acting as the brain of the computer. It continually fetches instructions from memory, decodes what needs to be done, and then executes the operation, performing calculations and controlling data flow. The CPU’s Arithmetic Logic Unit handles calculations and logical decisions, while the control unit sequences the steps needed to complete tasks. RAM holds the data and programs the CPU uses, but it doesn’t run instructions on its own. The power supply provides the necessary energy to all components, while the operating system is software that manages resources and coordinates tasks using the CPU. Since execution of instructions is what drives all computer activity, the CPU is the best answer.

The CPU is the component that directly executes instructions, acting as the brain of the computer. It continually fetches instructions from memory, decodes what needs to be done, and then executes the operation, performing calculations and controlling data flow. The CPU’s Arithmetic Logic Unit handles calculations and logical decisions, while the control unit sequences the steps needed to complete tasks. RAM holds the data and programs the CPU uses, but it doesn’t run instructions on its own. The power supply provides the necessary energy to all components, while the operating system is software that manages resources and coordinates tasks using the CPU. Since execution of instructions is what drives all computer activity, the CPU is the best answer.