First time I used computers they were mainframes and I accessed them remotely over teletype lines, that was in the 70s.
First personal computer I owned was in the 80s. Somewhere in the back room in a drawer there's a 300baud modem that was my window to the bbs world. Talk about text messaging. And flames. People who put a sig longer than 25 characters and used it more than twice were practically charbroiled for it.
Ditto! It is nothing short of astonishing to me. I remember touring Bell Labs in Murray Hill and seeing the first ever 5ESS. You went into a room with a 1A--electronic switch, but tons of relays, fans, etc.--very noisy!, and then went through an airlock (seriously) to a room where there were just a few cabinets of electronics doing everything the 1A did. In about a tenth of the space. And the most remarkable thing? All you could hear were the fans......
And I remember when the IBM 370 was the very pinnacle of computing power......