"16 KB" refers to a data size of 16 kilobytes, which is a unit of digital information. One kilobyte is equal to 1,024 bytes, so 16 KB is 16,384 bytes. This amount of data is relatively small by modern standards, often used to store simple text files or small images. In the context of computer memory, 16 KB can represent a small portion of a computer's RAM or storage. For example, early computer systems and simple applications often operated within this memory limit, making it significant in the history of computing.