A byte (B) is a fundamental unit of digital information storage and data representation in computing. It is a standardised measurement used to quantify data size or capacity within a computer system.
A byte is composed of a sequence of 8 bits. Each bit is a binary digit representing a value of either 0 or 1. It is used to represent a single character of text or a small piece of data. For example, a byte can represent a letter, number, punctuation mark, or a small unit of information.
Bytes are used to measure the size of digital data storage, such as files, documents, images, videos, software programmes, and other digital content. For instance, a text file might be a few kilobytes in size, while high-definition videos or large databases could be several gigabytes or terabytes in size.
They serve as the basic building blocks of digital information storage, manipulation, and representation in computing systems, playing a critical role in various aspects of data handling and storage within computers and digital devices.