# Computer Architecture - Arithmetic logic unit (ALU)

> Computer System > Computer - Central processing unit (CPU)

### Table of Contents

## 1 - About

The ALU is a component of a CPU.

It is a device that executes all arithmetic and logical operations.

In most arithmetic logic unit (ALU) hardware, we find a fixed-precision arithmetic found , which typically offers between 8 and 64 bits of precision (Arbitrary-precision_arithmetic)

## 2 - Articles Related

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## 3 - Operations

- arithmetic operations, or mathematical calculations: addition, subtraction, multiplication, and division.
- logical operations and comparison. The unit can compare numbers, letters, or special characters.