a quick summary of what xerox parc had invented by 1979 the personal computer the laser printer ethernet word processing the windows graphical user interface object-oriented programming digitial video editing an internetworking protocol wow. Update: This is, by the way, my third blog post. Ever. Anyway, the reason I wrote it and the reason I’m updating it is to say that at the time I posted this, I was reading an excellent book about the history of Xerox Parc called Dealers of Lightning: Xerox PARC and the Dawn of the Computer Age. Check it out.