Memory units are standard measurements used to quantify digital information storage. The most common 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 capacity of storage devices like hard drives and flash drives. These memory units help users understand how much data can be stored or processed. For example, a gigabyte can hold approximately 1,000 megabytes, making it easier to gauge the size of files, applications, and media. Understanding these units is essential for managing digital storage effectively.