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Difference between Verilog and VHDL

Difference between Verilog and VHDL

When it comes to learning about digital electronics, you will likely hear about Verilog and VHDL. Both of these languages are used to describe digital systems, but there are some key differences between them. In this blog post, we’ll take a look at some of those differences. We’ll also discuss why you might choose one language over the other. By the end, you should have a good understanding of what makes Verilog and VHDL unique and which one might be best for you.

What is Verilog?

Verilog is a hardware description language (HDL) used to model electronic systems. It is most commonly used in the design and verification of digital circuits at the register-transfer level (RTL). Verilog can also be used for modeling high-level conceptual designs and system-level architecture. Verilog is based on the Verification Language (VL), which was developed in 1984 by Phil Moorby. Verilog was originally created as a closed, proprietary language That was later released as an open standard under the Verilog-95 specification. Today, Verilog is still widely used in industry, although it faces competition from other HDLs such as VHDL, SystemVerilog, and Propel.

What is VHDL?

VHDL is a hardware description language used to describe digital logic circuits. VHDL can be used to describe both combinational and sequential logic circuits. VHDL code can be simulated using a VHDL simulator, which allows designers to test their designs before sending them to be fabricated. VHDL is also used in synthesis, which is the process of converting VHDL code into actual hardware. VHDL has a number of advantages over other HDLs, including its ability to describe logic at a high level of abstraction and its portability across different synthesis tools.

Difference between Verilog and VHDL

Verilog and VHDL are two Verilog Hardware Description Languages. Verilog is more commonly used in North America while VHDL is more popular in Europe. Verilog has a syntax that is C-like while VHDL has a syntax that is more like Ada. Verilog is easier to learn than VHDL. Verilog is better for modeling algorithms while VHDL is better for modeling hardware structures. Verilog can be used for test benches while VHDL cannot. Verilog can be simulated faster than VHDL. Verilog can be synthesized into gates while VHDL cannot. Verilog can be used for FPGAs while VHDL cannot. Verilog is not case sensitive while VHDL is case sensitive. Verilog does not have a standard library while VHDL does have a standard library. Verilog allows multiple drivers on net sides while VHDL does not allow multiple drivers on net sides.


In the digital age, Verilog and VHDL are two of the most popular hardware description languages. They are used to model and simulate electronic systems. But what is the difference between them? Let’s take a closer look. Verilog was created in 1985 by Gateway Design Automation Incorporated as a proprietary language. It wasn’t until 1995 that it was released as open-source software. On the other hand, VHDL was standardized by IEEE in 1987 and has been revised several times since then.

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