ZoiCode.
The LeetCode for VLSI.
Master Hardware Design with our browser-based Verilog simulator. Solve problems, run testbenches, and visualize waveforms instantly.
module counter_4bit (
input clk,
input rst,
output reg [3:0] count
);
always @(posedge clk or posedge rst) begin
if (rst)
count <= 4'b0000;
else
count <= count + 1;
end
endmodule
Integrated Environment
Write, compile, and simulate Verilog/SystemVerilog directly in your browser. No heavy installations required.
Instant Feedback
Get real-time syntax checking and compilation errors. Run testbenches and see results in seconds.
Waveform Viewer
Debug your designs with our built-in EPWave-like waveform viewer. Zoom, pan, and analyze signals effortlessly.
Hardware-Focused
Tailored specifically for digital design. Libraries for standard logic gates, flip-flops, and FSMs included.
Problem Library
Practice with hundreds of curated problems ranging from basic logic gates to complex processor design.
Mock Interviews
Simulate real-time technical interviews with timed coding challenges and automated test cases.