1977 technology:
The above was "cutting edge" for the standards of the time. Back in '77, there might've been one computer in an entire office building, and only around '77 did we start to see personal computers that didn't take up a whole floor. Of course, being only 9, I was too young back then to know first-hand, but that's what I was told. About the ad, between you and me, I have absolutely no idea what that tape recorder's supposed to be for.