Which statement describes the CPU's purpose?

• A. Memory management unit handles paging
• B. Graphics Processing Unit handles rendering
• C. Central Processing Unit is responsible for executing a sequence which involves taking inputs from an input device, processing the input and outputting the results.
• D. Network interface card handles data transfer

Answer: (C)

The CPU’s job is to execute the sequence of instructions that drive the computer, coordinating how data moves and is transformed. It fetches instructions from memory, decodes what each instruction requires, and executes the operation—performing arithmetic or logic, moving data, and controlling other parts of the system. In practice, this means it takes input from devices (like a keyboard), processes that data according to the program, and outputs results to memory or an output device (like a display). That ability to run software and manage data flow between memory and I/O is what the CPU is all about. The other components handle different roles: memory management units deal with paging and virtual memory, GPUs render graphics, and network interface cards manage data transfer over networks.