A 32-bit unsigned integer is a data type used in computing that can represent whole numbers without any negative values. It uses 32 bits, which allows it to store values ranging from 0 to 4,294,967,295. This type of integer is commonly used in programming and digital systems where only non-negative numbers are needed. Since it is "unsigned," it does not allocate any bits for negative values, maximizing the range of positive integers it can represent. This makes 32-bit unsigned integers particularly useful in applications like memory addressing, where only positive values are relevant.