Besides 'computer' operator, there used to be 'I/O operator's (tapes) and 'print pool operator' (run printers). Also, in my experience 'computer operators' wer

Besides 'computer' operator, there used to be 'I/O operator's (tapes) and 'print pool operator' (run printers). Also, in my experience 'computer operators' weren't really 'sysadmins' they were more like automated job scheduling services. Follow the run book, run batch jobs, check for errors sort of thing Source: I've held all 3 positions at one time or another.