FPGA Prototyping of a Digital Combination Lock

Development boards based on FPGAs facilitate the design of experiments aimed at prototyping configurable logic using HDL languages in the teaching laboratory. One of these boards is the Basys3, which incorporates an Artix-7 FPGA connected to numerous input/output modules. This work shows the implementation on this platform of a digital combination lock designed in a modular way in VHDL using, in addition to the interface elements available on the board, an external USB keyboard. A phased design of increasing complexity, including both simulation and synthesis, is proposed.