Hello, I am a software engineer in the process of learning FPGA design as an additional skill. I have already spent some time learning VHDL for FPGAs and already found some great resources for that [1].

However, the more I read the more I realize that I actually need to study two topics:

1. Digital circuit design basics (what this post is asking about)
2. Implementing a design for FPGAs in VHDL (what I already have good resources for)

As a software engineer, I have a lot of experience in expressing ideas in code, so looking at circuits as a synthesized form of an abstract HDL code makes learning a lot easier for me than other descriptions and/or abstraction layers. And it also is more related to the actual work I plan to do in the future. Can you recommend any resources for learning basics of digital circuit design from this perspective? Is it even a good idea to look for such resources? Thanks in advance.

[1]: In case someone is interested, these VHDL resources are free and appear to me to be of high quality:

• https://github.com/fabriziotappero/Free-Range-VHDL-book
• https://github.com/ARC-Lab-UF/vhdl-tutorial