What is the base-16 system that uses digits 0-9 and letters A-F called?

The base-16 system that utilizes digits 0-9 and letters A-F is known as the hexadecimal system. In this numeral system, the digits 0 through 9 represent values zero to nine, while the letters A through F represent values ten to fifteen. This system is widely used in computing and digital electronics because it provides a more compact representation of binary numbers, making it easier for humans to read and work with large values. Each hexadecimal digit corresponds to four binary digits (bits), which simplifies the conversion between binary and hexadecimal representations, often used in programming, memory addressing, and color coding in web design.