Summary
Today, I am walking you through what it took me to make an industrial product in the early 1980s. This is what I did for one of the most uncomplicated products I ever sold. It was an RS-232 to RS-422 converter. It just used a couple of integrated circuits, a few passive components (clamping diodes and capacitors), and a power supply.
Photo by Robin Glauser on Unsplash
4-bits, 8-bits, and a dollar! 