TEK UNIX history

Al Kossow wrote: I saw a system in 1975 that they brought to the University of Missouri, Rolla, with what must have been an 11/45 or 11/70 (anyway two bays of stuff with a largeish 11 in it). The system was called a transient system digitizer. It was the precursor of a system that uses a special double ended cathode ray tube to essentially paint at sampling speeds a signal onto a silicon charged array, then digitally scan the results off with another beam from the other side of the array. This was a very fast sampling oscilliscope read by what essentially was an integrated tv tube. Anyway, it would capture the data, process it and make wonderful graphs of the stuff. All of this was moved and was installed and demoed by Tektronix, not dec. Not idea of O/S, since this discussion is about Unix, but at least Tek had experience with "embedded" computing before unix came out and they could get it. Jim Jim