The correct answer is Arithmetic Logic Unit.
Key Points
- Register
- A register is a quickly accessible location available to a computer's processor.
- Registers usually consist of a small amount of fast storage.
- Some registers have specific hardware functions and may be read-only or write-only.
- Arithmetic Logic Unit.
- Arithmetic Logic Unit is a combinational digital circuit.
- It performs arithmetic and bitwise operations on integer binary numbers.
- ALU can be designed to perform complex functions.
Additional Information
- Central processing unit
- It is the main processor or it is electronic circuitry that executes instructions comprising a computer program.
- The CPU performs basic arithmetic logic, controlling, and input/output operations specified by the instructions in the program.
- The individual physical CPU processor cores can also be multithreaded to create additional virtual or logical CPUs.
- Control Unit
- The control unit is a component of a computer's central processing unit that directs the operation of the processor.
- It tells the computer's memory, arithmetic logic unit.
- The control unit may include a binary counter to tell the control unit's logic what step it should do.
- Memory unit
- A memory unit is a component of a computer system.
- It is used to store data, instruction and information.
- It is also known as a main/primary/internal memory.
- There are two types of memory-:
- Read only memory.
- Random-access memory.

