HDL stands for Hardware Description Language. It is a specialized programming language used to describe the behavior of digital circuits and systems. HDLs are used in digital logic circuit design to describe the functionality of a circuit or system, including the inputs, outputs, and behavior of individual components. The most commonly used HDLs are Verilog and VHDL, which are used to design digital systems such as microprocessors, FPGA and ASICs. HDL allows designers to simulate, test and verify the behavior of digital circuits before they are physically implemented.
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