// Example: Simple 4-bit counter in Verilog always @(posedge clk or posedge reset) begin if (reset) count <= 4'b0000; else count <= count + 1; end
: Convert the logical design into a physical layout for fabrication, optimizing for area and performance. Simulation & Verification : Use tools like Synopsys PrimeTime to estimate power and verify timing before manufacturing. Sierra Circuits Best Practices for Reliability digital circuit design
Approximately 70% of project time is spent verifying that the RTL matches the spec. Methods include: // Example: Simple 4-bit counter in Verilog always
Borrowing from software: version control (Git), continuous integration (CI) for simulation, and standardized interfaces (TileLink, AXI). Frameworks like Chisel and SpinalHDL bring object-oriented programming and functional programming to hardware. Unlike analog circuits
, forming the backbone of modern computing. Unlike analog circuits, which handle continuous signals, digital designs focus on logical correctness and high-speed processing. Core Design Types Combinational Logic : Circuits where the output depends solely on the present input . Common examples include adders and decoders. Sequential Logic : Circuits where output depends on both current inputs and previous states