My mother had, in the 1960s, one of those spool audio recorders. It was a bit smaller than the one you show. She would tape radio shows of one of her friends.
In the 1970s I had a big, heavy cassette recorder that I would tape convention talks with. I remember having it in my lap in a special talk (1974 - 10,000 JWs in attendance) were Frederick Franz explained how the great tribulation/Armageddon would start within months or years - not decades - of September 1975. I forget what I did with that Cassette but if I still have it it would be a jewel.
I also remember, in the 1960s, seeing IBM computers that were the size of a huge refrigerator that used magnetic tape in spools. A modern day calculator has more capacity than one of those.
My first calculator (Texas Instruments), in the early 1970s, cost a hundred dollars (the equivalent of several hundred dollars in today's money) and could only add, subtract, multiply, divide and do X2.
My mother also had one of those vintage "portable" 1960s typewriters that used ink spools. I still have it.
