I'm well aware of what we came from.

My dad had a few of these. One I distinctly remember was a 2 part combo. To write, you put the chip in a ZIF socket (he changed this from a socketed to ZIF) in a huge metal box, and what looks like a parallel port to the computer. Then, you realize that wasnt a parallel socket, but something going to an 8bit ISA card.

To erase, you had to untape the window and put the chip in a UV box for a few hours.

I've still got it around here, somewhere...