Unsigned integers are whole numbers that do not have a sign, meaning they can only represent non-negative values. This includes zero and all positive whole numbers, such as 1, 2, 3, and so on. Because they do not account for negative values, unsigned integers can represent a larger range of positive numbers compared to signed integers of the same bit size. In computer science, unsigned integers are commonly used in programming and data storage. For example, in C++ or Java, an unsigned integer can store values from 0 up to a maximum limit, which is determined by the number of bits used. This makes them useful for counting and indexing where negative values are not needed.