SPICE is a general-purpose, open-source analog electronic circuit simulator. It stands for Simulation Program with Integrated Circuit Emphasis. ngspice is a successor, and is easily installable on Linux. It’s the simulator I’ve used to explore the Skywater 130 PDK.

Here’s an example spice simulation file that I used to simulate the inverter I drew.

And here’s a nice demo of me showing how a flip-flop works by simulating a Sky130 D type flip flop with SPICE.

Course feedback

This is probably the best course you can get your hands on for practical stuff. If you're a hands-on guy like me it's really worth it to have the course. You can do it hand in hand with whatever theory that you're following as well. Hands-on is king for me, I mean what's the point of reading if you can't experiment - this is the mindset of an engineer.

Ameen Altajer (digital course)