VHDL and Verilog describe digital hardware.
VHDL and Verilog describe hardware behaviour and structure (RTL), which is synthesised to gates. Concurrent semantics differ from software. Testbenches simulate designs before implementation. SystemVerilog adds verification features.
A counter in Verilog: always @(posedge clk) q<=q+1.
Hardware description languages describe digital circuits in code, which makes large designs possible and testable.
VHDL and Verilog describe digital hardware.
Hardware description languages describe digital circuits in code, which makes large designs possible and testable.
They describe the same kind of hardware with different syntax. VHDL is strongly typed and verbose, while Verilog is more compact and C-like.
Simulation finds logic errors cheaply, while mistakes found after building hardware are far more expensive to fix.
Typical applications include writing a UART module in Verilog for an FPGA, simulating a counter in VHDL before synthesis and describing a state machine for a video controller.
Study "Sampling theorem" first (topic 51 of 104 in Electronics & Embedded). It covers the groundwork this topic builds on.
Synthesisable subset. Blocking vs non-blocking assignments. Simulation vs synthesis.
A counter in Verilog: always @(posedge clk) q<=q+1.
The next topic is "FPGA", which builds directly on this one.
It is classed as Intermediate in Electronics & Embedded (topic 52 of 104). It is an intermediate topic. Work through the beginner topics in Electronics & Embedded first.
Want to practise? Open the interactive course for quick checks, quizzes, simulations and progress tracking.