I was a technical illustrator for Lockheed from 1980 to 1993. I was promoted to Commercial Artist in 1990, but the workload did not change much. For the first six years at Lockheed, I worked on a drafting table, and the last seven years I worked on a VAX workstation doing vector based drawings with a software called Interleaf. I called it "industrial strength Macintosh," because it was so much more robust than McDraw. Another software we used on the mac was called Canvas, closer to Illustrator than McDraw.
Starting in 1986, we created slides with MS Powerpoint, after years of cutting and pasting them on a drafting table. We still use the terms, "cut and paste" on the computer.