Hardware description language

In computer engineering, a hardware description language (HDL) is a specialized computer language used to describe the structure and behavior of electronic circuits, usually to design application-specific integrated circuits (ASICs) and to program field-programmable gate arrays (FPGAs). A hardware description language enables a precise, formal description of an electronic circuit that allows for the automated analysis and simulation of the circuit.

Source: Wikipedia — Hardware description language (CC BY-SA 4.0)