What is the full form of ALU?

Concept

Acronyms in computer architecture are fixed names for functional units. A valid expansion must match both the initials and the established role of the hardware component.

The processor unit associated with numerical calculations and Boolean operations combines arithmetic and logic functions in one execution block.

Application

ALU expands to Arithmetic Logic Unit. It performs operations such as addition and subtraction, along with logical operations such as AND, OR, and comparisons.

Contrast

• Advanced Logic Unit uses the same initials but is not the conventional name of this CPU component.

• Arithmetic Level Unit replaces the functional term Logic with Level and therefore does not describe the unit’s paired operation categories.

• Application Logic Unit associates the component with applications rather than its arithmetic-and-logic hardware functions.

Cross-check and result

The standard expansion matches the component’s two core operation classes: arithmetic and logic. Therefore, ALU stands for Arithmetic Logic Unit.