For a time line on how fast computers improved, I graduated from college in 1981.
My college had been buying computer time from another university which had a large mainframe. In 1981, the college finally acquired its own mainframe and the last time I registered for classes was the first time in college history that it was done on line and not with little computer punch cards.
The guys I knew at MIT during my college years were the only people I knew who had their own computers. Many of them bought their first one at Radio Shack.
My first job had no computers in the office, even though we ran a mail-order business and had a mailing list of over 35,000 names and addresses.
My second job, all four employees had computers, but the owner could barely use his and kept expecting it to work like a typewriter, so I was constantly having to fix his documents. We didn't have MS Word, but used software called MultiMate. No internet, no email. Lots of DOS commands. I was really good with a few basic DOS commands and the rest of the office thought I was a computer genius. Nope, I just read the manuals.
In 1985, four years after graduating from college, I went back to grad school. Things had changed so much in those four years that I went around asking where the computer lab was, not if the university had a computer lab.
The computer lab had these new-fangled Apple MacIntosh computers with these funny things called mice, and no DOS, just this weird interface with folders and a desktop. At first, I thought this was strange. Then I sat down at one of those funny computers. And never willingly used a PC again.