Concept:The central processing unit (CPU) is the core component that executes instructions and processes data inside a computer.
Explanation:The CPU is generally made up of three main parts: the arithmetic and logical unit (ALU), the control unit, and the memory unit.
The arithmetic and logical unit performs all mathematical calculations and logical comparisons.
The control unit directs and coordinates the operations of the computer system.
The memory unit stores data and instructions temporarily for processing.
An input unit is not part of the CPU.
Instead, the input unit is a separate hardware component used to enter data into the computer, such as a keyboard or mouse.
Since the question asks for the item that is not part of the CPU, the input unit is the correct choice.
Answer:C. input unit