Which component is responsible for executing programs and performing calculations in a PC?

Which component is responsible for executing programs and performing calculations in a PC?

• A. RAM
• B. CPU
• C. HDD
• D. GPU

Answer: (B)

Executing programs and performing calculations in a PC is the role of the central processing unit. The CPU fetches instructions from memory, decodes them, and carries out the needed arithmetic, logic, and control operations that drive software. RAM provides a fast workspace for the data and instructions the CPU uses, but it doesn’t execute programs itself. The hard drive stores data long-term and loads programs into memory, yet it doesn’t perform calculations. The GPU handles graphics and can accelerate certain parallelizable tasks, but general program execution falls to the CPU. So, the CPU is the component responsible for executing programs and performing calculations.

Executing programs and performing calculations in a PC is the role of the central processing unit. The CPU fetches instructions from memory, decodes them, and carries out the needed arithmetic, logic, and control operations that drive software. RAM provides a fast workspace for the data and instructions the CPU uses, but it doesn’t execute programs itself. The hard drive stores data long-term and loads programs into memory, yet it doesn’t perform calculations. The GPU handles graphics and can accelerate certain parallelizable tasks, but general program execution falls to the CPU. So, the CPU is the component responsible for executing programs and performing calculations.