Learn digital design by writing it.

HDLbits.com is a hands-on place to practice hardware description languages and digital design. Work through problems in Verilog, SystemVerilog, or VHDL, then run your design and inspect the results in your browser.

The curriculum starts with core language and circuit-building skills, then moves into practical RTL patterns such as FIFOs, clock-domain crossing, pipelines, and memories. The aim is to make each step concrete: write the logic, simulate it, and use the feedback to understand how it behaves.

Whether you are learning digital logic for a course or refreshing your RTL skills, HDLbits is designed to make focused practice easy to begin and repeat.