Question

Explain the main functions of the CPU.

Answer 1

The computer's central processing unit (CPU) is the portion of a computer that retrieves and executes instructions. ... The control unit controls all CPU operations, including ALU operations, the movement of data within the CPU, and the exchange of data and control signals across external interfaces (system bus)

Answer 2

The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program. This contrasts with external components such as main memory and I/O circuitry, and specialized processors such as graphics processing units (GPUs).