Xerox Star
At one of my first summer college internships, back in the 80′s, I briefly used a Xerox Dorado workstation. It’s a pretty fuzzy memory, but the things that made the biggest impression on me were the machine’s large bitmapped window display, and the mouse that I used to create the flowcharts I needed. Using it felt like a big deal — but the my time with it was limited, so I never learned more than the basics. A couple years later, I worked with Xerox PARC for my college thesis project on Smalltalk — and came in contact with these machines again. But again, the specifics of how the machines worked is one of my faded memories.