Data units are standardized measurements used to quantify digital information. The most common data units include bit, byte, kilobyte, megabyte, gigabyte, and terabyte. A bit is the smallest unit, representing a binary value of 0 or 1, while a byte consists of 8 bits. Larger units are used to describe the size of files, storage capacity, and data transfer rates. Understanding data units is essential for managing digital content effectively. For example, a megabyte is often used to measure the size of images, while a gigabyte might represent the storage capacity of a smartphone. Knowing these units helps users make informed decisions about their data usage and storage needs.