Oy don’t tell me that. I was actually studying circuit board design 20 years ago, even made my own for a radio but lost interest. What would they be used for today, mainly computers? That would seem very high tech.
Hell, there are circuit boards in all kinds of equipment. Dish washers, cars, trucks, computers, and the list goes on. Designers don’t have to know what different components do. They just have to know how to design them into a finished product. It’s up to engineering to design the circuit. Some knowledge helps of course.
One of my designs:
